{"id":16,"date":"2026-10-17T22:14:25","date_gmt":"2026-10-17T16:44:25","guid":{"rendered":"https:\/\/srsfms.in\/blog\/dussehra-water-tank-cleaning-kolkata\/"},"modified":"2026-10-29T23:23:16","modified_gmt":"2026-10-29T17:53:16","slug":"vijaya-dashami-water-tank-cleaning-kolkata","status":"publish","type":"post","link":"https:\/\/srsfms.in\/blog\/vijaya-dashami-water-tank-cleaning-kolkata\/","title":{"rendered":"This Dussehra, Defeat the 10 Hidden Enemies Inside Your Water Tank"},"content":{"rendered":"\n<p style=\"font-size:14px;color:#007667;margin:0\"><strong>Part 2 of 14<\/strong> \u00b7 Festival Water Care series<\/p>\n\n\n\n<p lang=\"bn\" style=\"font-size:20px;color:#0f3d37;margin:4px 0 14px\"><strong>\u098f\u0987 \u09a6\u09b6\u09c7\u09b0\u09be\u09af\u09bc \u099c\u09b2\u09c7\u09b0 \u099f\u09cd\u09af\u09be\u0999\u09cd\u0995\u09c7\u09b0 \u09e7\u09e6\u099f\u09bf \u09b2\u09c1\u0995\u09cb\u09a8\u09cb \u09b6\u09a4\u09cd\u09b0\u09c1\u0995\u09c7 \u09b9\u09be\u09b0\u09be\u09a8<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"682\" height=\"1024\" src=\"https:\/\/srsfms.in\/blog\/wp-content\/uploads\/2026\/10\/dussehra-water-tank-germs-ravana-illustration-srs-kolkata-682x1024.png\" alt=\"Vijaya Dashami illustration: SRS - Water Tank Cleaning &amp; Solution team defeating a ten-headed germ and sludge monster inside a water tank, Kolkata\" class=\"wp-image-21\" style=\"width:596px;height:auto\" srcset=\"https:\/\/srsfms.in\/blog\/wp-content\/uploads\/2026\/10\/dussehra-water-tank-germs-ravana-illustration-srs-kolkata-682x1024.png 682w, https:\/\/srsfms.in\/blog\/wp-content\/uploads\/2026\/10\/dussehra-water-tank-germs-ravana-illustration-srs-kolkata-200x300.png 200w, https:\/\/srsfms.in\/blog\/wp-content\/uploads\/2026\/10\/dussehra-water-tank-germs-ravana-illustration-srs-kolkata-768x1152.png 768w, https:\/\/srsfms.in\/blog\/wp-content\/uploads\/2026\/10\/dussehra-water-tank-germs-ravana-illustration-srs-kolkata-1024x1536.png 1024w, https:\/\/srsfms.in\/blog\/wp-content\/uploads\/2026\/10\/dussehra-water-tank-germs-ravana-illustration-srs-kolkata.png 1333w\" sizes=\"auto, (max-width: 682px) 100vw, 682px\" \/><figcaption class=\"wp-element-caption\">This Vijaya Dashami, the real enemies may be hiding inside your water tank \u2013 sludge, algae, germs and more.<\/figcaption><\/figure>\n\n\n\n<div style=\"background:#EDF8F7;border-left:5px solid #009F8B;border-radius:10px;padding:16px 18px;margin:18px 0;line-height:1.7\"><strong>Short answer:<\/strong> Vijaya Dashami water tank cleaning is one of the simplest festive gifts for your family. Even a water tank that looks clean can hide 10 enemies: sludge, sand, green algae, slimy biofilm, germs, an iron layer, rust, insects, lizards or dead birds, and live red worms..<\/div>\n\n\n\n<div lang=\"bn\" style=\"background:#FFF8E7;border-left:5px solid #E0A100;border-radius:10px;padding:16px 18px;margin:18px 0;line-height:1.8\"><strong>\u09ac\u09be\u0982\u09b2\u09be\u09af\u09bc \u09b8\u0982\u0995\u09cd\u09b7\u09c7\u09aa\u09c7<\/strong><br>\u09b0\u09be\u09ac\u09a3\u09c7\u09b0 \u09af\u09c7\u09ae\u09a8 \u09a6\u09b6\u099f\u09be \u09ae\u09be\u09a5\u09be, \u0985\u09a8\u09c7\u0995\u09a6\u09bf\u09a8 \u09b8\u09be\u09ab \u09a8\u09be \u0995\u09b0\u09be \u099f\u09cd\u09af\u09be\u0999\u09cd\u0995\u09c7\u0993 \u09a4\u09c7\u09ae\u09a8\u09bf \u09a6\u09b6\u099f\u09be \u09b6\u09a4\u09cd\u09b0\u09c1 \u09a5\u09be\u0995\u09a4\u09c7 \u09aa\u09be\u09b0\u09c7 \u2014 \u0987-\u0995\u09cb\u09b2\u09be\u0987, \u09b8\u09be\u09b2\u09ae\u09cb\u09a8\u09c7\u09b2\u09be, \u09b2\u09c7\u099c\u09bf\u0993\u09a8\u09c7\u09b2\u09be, \u09b8\u09bf\u0989\u09a1\u09cb\u09ae\u09cb\u09a8\u09be\u09b8\u09c7\u09b0 \u09ae\u09a4\u09cb \u099c\u09c0\u09ac\u09be\u09a3\u09c1, \u09b9\u09c7\u09aa\u09be\u099f\u09be\u0987\u099f\u09bf\u09b8 A \u0986\u09b0 E-\u09b0 \u09ad\u09be\u0987\u09b0\u09be\u09b8, \u099c\u09bf\u09af\u09bc\u09be\u09b0\u09cd\u09a1\u09bf\u09af\u09bc\u09be-\u0995\u09cd\u09b0\u09bf\u09aa\u09cd\u099f\u09cb\u09b0 \u09ae\u09a4\u09cb \u09aa\u09b0\u099c\u09c0\u09ac\u09c0, \u09b6\u09cd\u09af\u09be\u0993\u09b2\u09be, \u09b2\u09cb\u09b9\u09be-\u09ae\u09b0\u099a\u09c7, \u0995\u09be\u09a6\u09be \u0986\u09b0 \u09a2\u09be\u0995\u09a8\u09be\u09b0 \u09a8\u09bf\u099a\u09c7 \u0995\u09be\u09b2\u09cb \u099b\u09a4\u09cd\u09b0\u09be\u0995\u0964 \u0993\u09aa\u09b0 \u09a5\u09c7\u0995\u09c7 \u099c\u09b2 \u09a6\u09bf\u09ac\u09cd\u09af\u09bf \u09aa\u09b0\u09bf\u09b7\u09cd\u0995\u09be\u09b0 \u09b2\u09be\u0997\u09c7, \u0995\u09bf\u09a8\u09cd\u09a4\u09c1 \u098f\u09b0\u09be \u0998\u09be\u09aa\u099f\u09bf \u09ae\u09c7\u09b0\u09c7 \u09a5\u09be\u0995\u09c7 \u09a4\u09b2\u09be\u09af\u09bc \u0986\u09b0 \u09a6\u09c7\u0993\u09af\u09bc\u09be\u09b2\u09c7\u0964 \u099b&#8217;\u09ae\u09be\u09b8 \u0985\u09a8\u09cd\u09a4\u09b0 \u09ae\u09c7\u09b6\u09bf\u09a8\u09c7 \u099f\u09cd\u09af\u09be\u0999\u09cd\u0995 \u09b8\u09be\u09ab \u0995\u09b0\u09be\u09a8 \u2014 \u098f\u09a6\u09c7\u09b0 \u09a5\u09be\u0995\u09be\u09b0 \u099c\u09be\u09af\u09bc\u0997\u09be\u099f\u09be\u0987 \u09b8\u09b0\u09bf\u09af\u09bc\u09c7 \u09a6\u09bf\u09a8\u0964 \u098f\u0987 \u09ac\u09bf\u099c\u09af\u09bc\u09be \u09a6\u09b6\u09ae\u09c0\u09a4\u09c7 \u0986\u09aa\u09a8\u09be\u09b0 \u09aa\u09b0\u09bf\u09ac\u09be\u09b0\u09c7\u09b0 \u099c\u09b2\u09c7\u0993 \u09b9\u09cb\u0995 \u0985\u09b6\u09c1\u09ad\u09c7\u09b0 \u0989\u09aa\u09b0 \u09b6\u09c1\u09ad\u09b0 \u099c\u09af\u09bc\u0964 \u09b6\u09c1\u09ad \u09ac\u09bf\u099c\u09af\u09bc\u09be\u0964 <\/div>\n\n\n\n<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><div id=\"ez-toc-container\" class=\"ez-toc-v2_0_89 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/srsfms.in\/blog\/vijaya-dashami-water-tank-cleaning-kolkata\/#Table_of_Contents\" >Table of Contents<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/srsfms.in\/blog\/vijaya-dashami-water-tank-cleaning-kolkata\/#Why_talk_about_your_water_tank_this_Dussehra\" >Why talk about your water tank this Dussehra?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/srsfms.in\/blog\/vijaya-dashami-water-tank-cleaning-kolkata\/#What_are_the_10_hidden_enemies_inside_your_water_tank\" >What are the 10 hidden enemies inside your water tank?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/srsfms.in\/blog\/vijaya-dashami-water-tank-cleaning-kolkata\/#1_What_is_E_coli_and_how_does_it_get_into_a_water_tank\" >1. What is E. coli, and how does it get into a water tank?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/srsfms.in\/blog\/vijaya-dashami-water-tank-cleaning-kolkata\/#2_Why_is_Salmonella_a_worry_in_old_dirty_water\" >2. Why is Salmonella a worry in old, dirty water?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/srsfms.in\/blog\/vijaya-dashami-water-tank-cleaning-kolkata\/#3_Why_does_green_slime_algae_grow_inside_the_tank\" >3. Why does green slime (algae) grow inside the tank?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/srsfms.in\/blog\/vijaya-dashami-water-tank-cleaning-kolkata\/#4_Why_is_my_tank_water_yellow_or_red_Iron_rust\" >4. Why is my tank water yellow or red? (Iron &amp; rust)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/srsfms.in\/blog\/vijaya-dashami-water-tank-cleaning-kolkata\/#5_What_is_the_mud_sludge_at_the_bottom_of_my_tank\" >5. What is the mud (sludge) at the bottom of my tank?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/srsfms.in\/blog\/vijaya-dashami-water-tank-cleaning-kolkata\/#6_Can_a_water_tank_spread_hepatitis\" >6. Can a water tank spread hepatitis?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/srsfms.in\/blog\/vijaya-dashami-water-tank-cleaning-kolkata\/#7_What_is_Legionella_and_why_does_it_matter_in_a_warm_tank\" >7. What is Legionella, and why does it matter in a warm tank?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/srsfms.in\/blog\/vijaya-dashami-water-tank-cleaning-kolkata\/#8_What_are_Giardia_and_Cryptosporidium\" >8. What are Giardia and Cryptosporidium?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/srsfms.in\/blog\/vijaya-dashami-water-tank-cleaning-kolkata\/#9_What_is_Pseudomonas\" >9. What is Pseudomonas?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/srsfms.in\/blog\/vijaya-dashami-water-tank-cleaning-kolkata\/#10_Why_are_there_black_spots_under_my_tank_lid_Fungus_mould\" >10. Why are there black spots under my tank lid? (Fungus &amp; mould)<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/srsfms.in\/blog\/vijaya-dashami-water-tank-cleaning-kolkata\/#How_does_a_proper_clean_defeat_these_enemies\" >How does a proper clean defeat these enemies?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/srsfms.in\/blog\/vijaya-dashami-water-tank-cleaning-kolkata\/#Are_PVC_tanks_and_cement_tanks_cleaned_the_same_way\" >Are PVC tanks and cement tanks cleaned the same way?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/srsfms.in\/blog\/vijaya-dashami-water-tank-cleaning-kolkata\/#What_can_you_do_at_home_between_cleanings\" >What can you do at home between cleanings?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/srsfms.in\/blog\/vijaya-dashami-water-tank-cleaning-kolkata\/#When_should_you_book_your_next_tank_cleaning\" >When should you book your next tank cleaning?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/srsfms.in\/blog\/vijaya-dashami-water-tank-cleaning-kolkata\/#Frequently_asked_questions\" >Frequently asked questions<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/srsfms.in\/blog\/vijaya-dashami-water-tank-cleaning-kolkata\/#What_hidden_enemies_can_live_inside_a_water_tank\" >What hidden enemies can live inside a water tank?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/srsfms.in\/blog\/vijaya-dashami-water-tank-cleaning-kolkata\/#Can_a_water_tank_look_clean_but_still_be_dirty\" >Can a water tank look clean but still be dirty?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/srsfms.in\/blog\/vijaya-dashami-water-tank-cleaning-kolkata\/#How_often_should_I_clean_my_water_tank_in_Kolkata\" >How often should I clean my water tank in Kolkata?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/srsfms.in\/blog\/vijaya-dashami-water-tank-cleaning-kolkata\/#Does_SRS_use_chemicals\" >Does SRS use chemicals?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/srsfms.in\/blog\/vijaya-dashami-water-tank-cleaning-kolkata\/#Does_SRS_clean_water_tanks_in_Howrah_too\" >Does SRS clean water tanks in Howrah too?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/srsfms.in\/blog\/vijaya-dashami-water-tank-cleaning-kolkata\/#Festival_Water_Care_series_all_parts\" >Festival Water Care series: all parts<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Table_of_Contents\"><\/span>Table of Contents<span class=\"ez-toc-section-end\"><\/span><\/h2><nav><ul><li><a href=\"#why-talk-about-your-water-tank-this-dussehra\">Why talk about your water tank this Dussehra?<\/a><\/li><li><a href=\"#ten-enemies\">What are the 10 hidden enemies inside your water tank?<\/a><ul><li><a href=\"#e-coli\">1. What is E. coli, and how does it get into a water tank?<\/a><\/li><li><a href=\"#salmonella\">2. Why is Salmonella a worry in old, dirty water?<\/a><\/li><li><a href=\"#algae\">3. Why does green slime (algae) grow inside the tank?<\/a><\/li><li><a href=\"#iron-rust\">4. Why is my tank water yellow or red? (Iron &amp; rust)<\/a><\/li><li><a href=\"#mud-sediment\">5. What is the mud (sludge) at the bottom of my tank?<\/a><\/li><li><a href=\"#hepatitis\">6. Can a water tank spread hepatitis?<\/a><\/li><li><a href=\"#legionella\">7. What is Legionella, and why does it matter in a warm tank?<\/a><\/li><li><a href=\"#parasites\">8. What are Giardia and Cryptosporidium?<\/a><\/li><li><a href=\"#pseudomonas\">9. What is Pseudomonas?<\/a><\/li><li><a href=\"#mould\">10. Why are there black spots under my tank lid? (Fungus &amp; mould)<\/a><\/li><\/ul><\/li><li><a href=\"#six-stage-process\">How does a proper clean defeat these enemies?<\/a><ul><li><a href=\"#are-pvc-tanks-and-cement-tanks-cleaned-the-same-way\">Are PVC tanks and cement tanks cleaned the same way?<\/a><\/li><\/ul><\/li><li><a href=\"#what-can-you-do-at-home-between-cleanings\">What can you do at home between cleanings?<\/a><\/li><li><a href=\"#when-should-you-book-your-next-tank-cleaning\">When should you book your next tank cleaning?<\/a><\/li><li><a href=\"#faq\">Frequently asked questions<\/a><ul><li><a href=\"#what-hidden-enemies-can-live-inside-a-water-tank\">What hidden enemies can live inside a water tank?<\/a><\/li><li><a href=\"#can-a-water-tank-look-clean-but-still-be-dirty\">Can a water tank look clean but still be dirty?<\/a><\/li><li><a href=\"#how-often-should-i-clean-my-water-tank-in-kolkata\">How often should I clean my water tank in Kolkata?<\/a><\/li><li><a href=\"#does-srs-use-chemicals\">Does SRS use chemicals?<\/a><\/li><li><a href=\"#does-srs-clean-water-tanks-in-howrah-too\">Does SRS clean water tanks in Howrah too?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n\n\n\n<h2 id=\"why-talk-about-your-water-tank-this-dussehra\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Why_talk_about_your_water_tank_this_Dussehra\"><\/span>Why talk about your water tank this Dussehra?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Dussehra and Bijoya Dashami remind us that good always wins over bad. In Kolkata, these are days of pujo, family visits, bhog and sweets.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Now think about the water behind all of it. It cooks the bhog. It makes tea for your guests. It bathes your children and your parents. And all of it comes from one place: the tank on your roof or under the ground.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Most of us never look inside that tank. This Dussehra, let\u2019s take a look \u2014 not to worry, but to care.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">That is why many families in Kolkata and Howrah book their Vijaya Dashami water tank cleaning right after the Puja days.<\/p>\n\n\n\n<h2 id=\"ten-enemies\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_are_the_10_hidden_enemies_inside_your_water_tank\"><\/span>What are the 10 hidden enemies inside your water tank?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Most of these are too small to see. A \u201cgerm\u201d simply means a tiny living thing \u2014 like bacteria, a virus or a parasite \u2014 that can make people sick. Here they are at a glance. Tap any one to read more.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><a href=\"#e-coli\"><strong>E. coli<\/strong><\/a> \u2014 bacteria from droppings and dirty water<\/li>\n\n\n\n<li><a href=\"#salmonella\"><strong>Salmonella<\/strong><\/a> \u2014 bacteria in old, dirty water<\/li>\n\n\n\n<li><a href=\"#algae\"><strong>Algae<\/strong><\/a> \u2014 the green slime near the lid<\/li>\n\n\n\n<li><a href=\"#iron-rust\"><strong>Iron &amp; rust<\/strong><\/a> \u2014 the reddish layer on the floor and walls<\/li>\n\n\n\n<li><a href=\"#mud-sediment\"><strong>Mud &amp; sediment<\/strong><\/a> \u2014 the sludge at the bottom<\/li>\n\n\n\n<li><a href=\"#hepatitis\"><strong>Hepatitis A &amp; E<\/strong><\/a> \u2014 viruses that harm the liver<\/li>\n\n\n\n<li><a href=\"#legionella\"><strong>Legionella<\/strong><\/a> \u2014 bacteria in the slimy layer of warm water<\/li>\n\n\n\n<li><a href=\"#parasites\"><strong>Giardia &amp; Cryptosporidium<\/strong><\/a> \u2014 tiny parasites<\/li>\n\n\n\n<li><a href=\"#pseudomonas\"><strong>Pseudomonas<\/strong><\/a> \u2014 bacteria in damp corners and pipes<\/li>\n\n\n\n<li><a href=\"#mould\"><strong>Fungus &amp; mould<\/strong><\/a> \u2014 black spots under the lid<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">None of this is meant to scare you. Most tanks will not have all ten. But almost every one of them needs the same things to survive: mud at the bottom, a slimy layer on the walls, and still water that nobody checks. Take those away, and you take away their home.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"756\" src=\"https:\/\/srsfms.in\/blog\/wp-content\/uploads\/2026\/10\/dussehra-water-tank-cleaning-kolkata-story-SRS-KOLKATA-1024x756.png\" alt=\"Sand and grey sludge settled at the bottom of an underground water tank (sump) in Kolkata, around a submersible pump, before SRS cleaning\" class=\"wp-image-22\" srcset=\"https:\/\/srsfms.in\/blog\/wp-content\/uploads\/2026\/10\/dussehra-water-tank-cleaning-kolkata-story-SRS-KOLKATA-1024x756.png 1024w, https:\/\/srsfms.in\/blog\/wp-content\/uploads\/2026\/10\/dussehra-water-tank-cleaning-kolkata-story-SRS-KOLKATA-300x221.png 300w, https:\/\/srsfms.in\/blog\/wp-content\/uploads\/2026\/10\/dussehra-water-tank-cleaning-kolkata-story-SRS-KOLKATA-768x567.png 768w, https:\/\/srsfms.in\/blog\/wp-content\/uploads\/2026\/10\/dussehra-water-tank-cleaning-kolkata-story-SRS-KOLKATA.png 1333w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Inside a Kolkata sump before cleaning: a thick layer of sand and sludge around the pump. (Photo: SRS)<\/figcaption><\/figure>\n\n\n\n<h3 id=\"e-coli\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_What_is_E_coli_and_how_does_it_get_into_a_water_tank\"><\/span>1. What is E. coli, and how does it get into a water tank?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">E. coli is a type of bacteria that lives in the gut of people, animals and birds. It can reach your tank through bird droppings near an open or broken lid, or through dirty water entering the supply line. Once inside, it can survive in the mud at the bottom.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>What it can do:<\/strong> stomach pain, cramps, vomiting and loose motions. Children and elders lose water from the body quickly, so this hits them hardest.<\/li>\n\n\n\n<li><strong>What you may notice:<\/strong> nothing. You cannot see, smell or taste it.<\/li>\n\n\n\n<li><strong>How to beat it:<\/strong> remove the sludge it hides in, and keep the lid tightly closed so birds can\u2019t get near the water.<\/li>\n<\/ul>\n\n\n\n<h3 id=\"salmonella\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_Why_is_Salmonella_a_worry_in_old_dirty_water\"><\/span>2. Why is Salmonella a worry in old, dirty water?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Salmonella is another bacteria that comes in with dirty water and droppings. It can survive for a long time in water that sits still and has mud or dirt in it.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>What it can do:<\/strong> typhoid and stomach infections, with fever, stomach pain and loose motions.<\/li>\n\n\n\n<li><strong>What you may notice:<\/strong> nothing. Like E. coli, it is invisible.<\/li>\n\n\n\n<li><strong>How to beat it:<\/strong> don\u2019t let old water and mud sit in the tank for years. A clean every 6 months keeps the tank from becoming its home.<\/li>\n<\/ul>\n\n\n\n<h3 id=\"algae\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_Why_does_green_slime_algae_grow_inside_the_tank\"><\/span>3. Why does green slime (algae) grow inside the tank?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Algae are tiny plants. Like all plants, they need light. They grow wherever sunlight gets in \u2014 through a gap, a cracked lid or a thin, see-through tank wall.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>What it can do:<\/strong> makes the water taste and smell bad, and becomes food for other bacteria. Some blue-green types can release substances that irritate the skin.<\/li>\n\n\n\n<li><strong>What you may notice:<\/strong> green or dark slime near the lid and on the upper walls.<\/li>\n\n\n\n<li><strong>How to beat it:<\/strong> high-pressure cleaning strips it off the walls. Afterwards, keep the lid closed and fix any cracks so light stays out.<\/li>\n<\/ul>\n\n\n\n<h3 id=\"iron-rust\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_Why_is_my_tank_water_yellow_or_red_Iron_rust\"><\/span>4. Why is my tank water yellow or red? (Iron &amp; rust)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Many water supplies carry dissolved iron. Over time it settles as a reddish-brown layer on the tank floor. In PVC (Sintex-type) tanks, this iron and sediment layer sticks hard to the walls.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>What it can do:<\/strong> yellow or red water, a metallic taste, and stains on clothes, buckets and bathroom tiles. It also chokes water purifier filters. Iron is mainly a taste and stain problem \u2014 but a rough, rusty layer gives bacteria an easy surface to stick to.<\/li>\n\n\n\n<li><strong>What you may notice:<\/strong> yellowish water, orange stains, or red-brown particles in your filter.<\/li>\n\n\n\n<li><strong>How to beat it:<\/strong> in PVC tanks, a cleaning chemical loosens the layer before pressure-washing. Cement (RCC) tanks don\u2019t need this chemical.<\/li>\n<\/ul>\n\n\n\n<h3 id=\"mud-sediment\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5_What_is_the_mud_sludge_at_the_bottom_of_my_tank\"><\/span>5. What is the mud (sludge) at the bottom of my tank?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Sand, silt, rust and dust come in with the water every day. They are too heavy to float, so they slowly settle at the bottom \u2014 month after month \u2014 into a thick layer of sludge.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>What it can do:<\/strong> spoils the taste and smell of the water, clogs filters and taps, and gives bacteria a dark, safe place to hide and grow.<\/li>\n\n\n\n<li><strong>What you may notice:<\/strong> sand in your bucket, or muddy water just after the tank refills or when the water level is low.<\/li>\n\n\n\n<li><strong>How to beat it:<\/strong> it has to be physically taken out \u2014 by sludge removal and vacuum cleaning. Draining the water alone leaves it behind.<\/li>\n<\/ul>\n\n\n\n<h3 id=\"hepatitis\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"6_Can_a_water_tank_spread_hepatitis\"><\/span>6. Can a water tank spread hepatitis?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Hepatitis A and E are viruses that spread through water mixed with sewage. They can enter through a leaking pipe or an open, uncovered tank.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>What it can do:<\/strong> they attack the liver, causing jaundice (yellow eyes and skin), tiredness and loss of appetite.<\/li>\n\n\n\n<li><strong>What you may notice:<\/strong> nothing in the water itself.<\/li>\n\n\n\n<li><strong>How to beat it:<\/strong> to be honest, a clean tank alone cannot fix a dirty supply line. But a clean tank with a tightly closed lid removes one more way in. If you suspect a leak or sewage smell, get the pipes checked too.<\/li>\n<\/ul>\n\n\n\n<h3 id=\"legionella\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"7_What_is_Legionella_and_why_does_it_matter_in_a_warm_tank\"><\/span>7. What is Legionella, and why does it matter in a warm tank?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Legionella is a bacteria that lives in the slimy layer (biofilm) on tank walls and pipes. It grows best in warm water, roughly between 20\u00b0C and 45\u00b0C. A rooftop tank in a Kolkata summer can easily reach that range.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>What it can do:<\/strong> it does not harm you by drinking. The risk comes from breathing in tiny water droplets \u2014 for example, while bathing under a shower. This can cause a serious lung infection. Elders and people with weak immunity are at higher risk.<\/li>\n\n\n\n<li><strong>What you may notice:<\/strong> a slimy feel on the tank walls.<\/li>\n\n\n\n<li><strong>How to beat it:<\/strong> high-pressure cleaning removes the slimy layer it feeds on, and the H2O2 spray treats the walls after.<\/li>\n<\/ul>\n\n\n\n<h3 id=\"parasites\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"8_What_are_Giardia_and_Cryptosporidium\"><\/span>8. What are Giardia and Cryptosporidium?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">These are parasites \u2014 tiny living things that live off a person\u2019s body. They enter the tank through dirty water and can survive in water for a long time. Some of them are not easily killed by ordinary chlorine.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>What it can do:<\/strong> they attack the intestines, causing loose motions that can last for weeks, weight loss and weakness. Small children suffer the most.<\/li>\n\n\n\n<li><strong>What you may notice:<\/strong> nothing.<\/li>\n\n\n\n<li><strong>How to beat it:<\/strong> keep the tank free of the mud and old water where they can settle and wait.<\/li>\n<\/ul>\n\n\n\n<h3 id=\"pseudomonas\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"9_What_is_Pseudomonas\"><\/span>9. What is Pseudomonas?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Pseudomonas is a bacteria that loves damp corners, pipes and the slimy layer inside tanks.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>What it can do:<\/strong> when you bathe or wash your face with this water, it can cause eye infections, ear pain and skin rashes.<\/li>\n\n\n\n<li><strong>What you may notice:<\/strong> a slimy feel on walls and pipes.<\/li>\n\n\n\n<li><strong>How to beat it:<\/strong> clean the corners and walls properly \u2014 not just the floor \u2014 and treat them with anti-bacterial spray.<\/li>\n<\/ul>\n\n\n\n<h3 id=\"mould\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"10_Why_are_there_black_spots_under_my_tank_lid_Fungus_mould\"><\/span>10. Why are there black spots under my tank lid? (Fungus &amp; mould)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The underside of the lid and the corners near the top stay damp but are rarely touched. That is where fungus and mould grow.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>What it can do:<\/strong> gives the water a musty smell. For people with asthma or allergies, mould can trigger breathing trouble and skin allergies.<\/li>\n\n\n\n<li><strong>What you may notice:<\/strong> black, grey or green spots under the lid and in the top corners.<\/li>\n\n\n\n<li><strong>How to beat it:<\/strong> clean the ceiling and the lid too, not only the floor. A proper clean covers walls and ceiling.<\/li>\n<\/ul>\n\n\n\n<div style=\"background:#FFF4F2;border-left:5px solid #D9534F;border-radius:10px;padding:14px 18px;margin:18px 0;line-height:1.7\"><strong>A gentle note for your family\u2019s health:<\/strong> if anyone at home has loose motions for days, a high fever, yellow eyes or breathing trouble, please see a doctor. A clean tank helps prevent problems \u2014 it does not treat an illness.<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>You can\u2019t see most of them \u2014 but you can remove the places where they live.<\/strong> A dirty tank gives them mud, slime and still water to hide in and grow. A clean tank takes that home away.<\/p>\n\n\n\n<div style=\"background:#EDF8F7;border-left:5px solid #009F8B;border-radius:10px;padding:16px 18px;margin:18px 0;line-height:1.7\"><strong>What our team has actually seen:<\/strong> on real cleaning jobs, we have found dead birds, lizards and live red worms breeding in the sludge at the bottom of tanks.<\/div>\n\n\n\n<h2 id=\"six-stage-process\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_does_a_proper_clean_defeat_these_enemies\"><\/span>How does a proper clean defeat these enemies?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Draining the water and scrubbing with a brush is not enough. SRS has used the same 6-stage mechanized process since 2017:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Mechanized de-watering<\/strong> \u2014 pumps out the old stored water, even below the foot-valve level.<\/li>\n\n\n\n<li><strong>Sludge removal<\/strong> \u2014 sucks out the mud and sediment from the floor.<\/li>\n\n\n\n<li><strong>High-pressure cleaning<\/strong> \u2014 jet cleaners strip algae, rust deposits and the slimy layer (biofilm) from the walls and ceiling.<\/li>\n\n\n\n<li><strong>Vacuum cleaning<\/strong> \u2014 an industrial vacuum takes away all the loosened dirt.<\/li>\n\n\n\n<li><strong>Anti-bacterial treatment<\/strong> \u2014 walls and ceiling are sprayed with hydrogen peroxide (H2O2).<\/li>\n\n\n\n<li><strong>UV radiation sterilization<\/strong> \u2014 UV light kills bacteria still left in the tank, like the final arrow.<\/li>\n<\/ol>\n\n\n\n<h3 id=\"are-pvc-tanks-and-cement-tanks-cleaned-the-same-way\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Are_PVC_tanks_and_cement_tanks_cleaned_the_same_way\"><\/span>Are PVC tanks and cement tanks cleaned the same way?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Not exactly. In PVC (Paton\/Sintex-type) tanks, iron and sediment form a layer stuck to the walls, so we use a cleaning chemical to loosen it. Cement (RCC) tanks don\u2019t need this chemical. Every tank, PVC or cement, gets the H2O2 anti-bacterial spray and then UV sterilization.<\/p>\n\n\n\n<h2 id=\"what-can-you-do-at-home-between-cleanings\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_can_you_do_at_home_between_cleanings\"><\/span>What can you do at home between cleanings?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Keep the tank lid closed and tight. Replace it if it is broken or cracked.<\/li>\n\n\n\n<li>Watch for warning signs: muddy or yellow water, sand in buckets, a bad smell, or green slime near the lid. See the full list in <a href=\"https:\/\/srsfms.in\/blog\/how-often-clean-water-tank-kolkata\/\">How Often Should You Clean Your Water Tank in Kolkata?<\/a><\/li>\n\n\n\n<li>Note the date of your last cleaning, so you know when the next one is due.<\/li>\n<\/ul>\n\n\n\n<h2 id=\"when-should-you-book-your-next-tank-cleaning\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"When_should_you_book_your_next_tank_cleaning\"><\/span>When should you book your next tank cleaning?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Every 6 months. Kolkata\u2019s humid weather makes algae and bacteria grow faster. After the pujo holidays, with Diwali and Kali Puja coming, many families like to have clean water before guests arrive.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">From our base in Haltu, SRS teams serve homes, apartments and offices across Kolkata and Howrah \u2014 including Behala, Garia, Salt Lake and Howrah. Housing societies, schools and offices can choose an <a href=\"https:\/\/srsfms.in\/commercial-tank-cleaning\/#amc\">AMC (Annual Maintenance Contract)<\/a>, and we send a WhatsApp reminder when the next cleaning is due.<\/p>\n\n\n\n<h2 id=\"faq\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Frequently_asked_questions\"><\/span>Frequently asked questions<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 id=\"what-hidden-enemies-can-live-inside-a-water-tank\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_hidden_enemies_can_live_inside_a_water_tank\"><\/span>What hidden enemies can live inside a water tank?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Germs like E. coli, Salmonella and Pseudomonas, viruses like Hepatitis A and E, parasites, algae, mud, rust, a slimy biofilm and mould. Most of them hide in the mud and slime at the bottom and on the walls.<\/p>\n\n\n\n<h3 id=\"can-a-water-tank-look-clean-but-still-be-dirty\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Can_a_water_tank_look_clean_but_still_be_dirty\"><\/span>Can a water tank look clean but still be dirty?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Yes. The water can look clear from the top, while mud sits on the floor and bacteria stick to the walls as a slimy layer.<\/p>\n\n\n\n<h3 id=\"how-often-should-i-clean-my-water-tank-in-kolkata\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_often_should_I_clean_my_water_tank_in_Kolkata\"><\/span>How often should I clean my water tank in Kolkata?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Every 6 months. Clean it sooner if you see muddy water, a bad smell, algae or insects.<\/p>\n\n\n\n<h3 id=\"does-srs-use-chemicals\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Does_SRS_use_chemicals\"><\/span>Does SRS use chemicals?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A cleaning chemical is used only in PVC tanks, to loosen the iron and sediment layer. Cement (RCC) tanks don\u2019t need it. Every tank gets a hydrogen peroxide (H2O2) anti-bacterial spray, followed by UV sterilization.<\/p>\n\n\n\n<h3 id=\"does-srs-clean-water-tanks-in-howrah-too\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Does_SRS_clean_water_tanks_in_Howrah_too\"><\/span>Does SRS clean water tanks in Howrah too?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Yes. SRS &#8211; Water Tank Cleaning &amp; Solution works across Kolkata and Howrah.<br><br>Ready for your Vijaya Dashami water tank cleaning? SRS &#8211; Water Tank Cleaning &amp; Solution offers mechanized tank cleaning across Kolkata and Howrah.<\/p>\n\n\n\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What hidden enemies can live inside a water tank?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Germs like E. coli, Salmonella and Pseudomonas, viruses like Hepatitis A and E, parasites, algae, mud, rust, a slimy biofilm and mould. Most of them hide in the mud and slime at the bottom and on the walls.\"}},{\"@type\":\"Question\",\"name\":\"Can a water tank look clean but still be dirty?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. The water can look clear from the top, while mud sits on the floor and bacteria stick to the walls as a slimy layer.\"}},{\"@type\":\"Question\",\"name\":\"How often should I clean my water tank in Kolkata?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Every 6 months. Clean it sooner if you see muddy water, a bad smell, algae or insects.\"}},{\"@type\":\"Question\",\"name\":\"Does SRS use chemicals?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"A cleaning chemical is used only in PVC tanks, to loosen the iron and sediment layer. Cement (RCC) tanks don\u2019t need it. Every tank gets a hydrogen peroxide (H2O2) anti-bacterial spray, followed by UV sterilization.\"}},{\"@type\":\"Question\",\"name\":\"Does SRS clean water tanks in Howrah too?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. SRS - Water Tank Cleaning & Solution works across Kolkata and Howrah.\"}}]}<\/script>\n\n\n\n<div style=\"background:#0f3d37;color:#fff;border-radius:14px;padding:22px 20px;margin:28px 0;text-align:center\">\n<p style=\"font-size:21px;font-weight:700;margin:0 0 6px;color:#fff\">Book a tank cleaning in Kolkata<\/p>\n<p style=\"margin:0 0 14px;color:#EDF8F7\">Available 24&#215;7 \u2014 call or WhatsApp anytime; our team can also attend urgent tank cleaning at any hour. Send your area, tank type and size on WhatsApp \u2014 most messages get a reply within 30 minutes.<\/p>\n<a href=\"https:\/\/wa.me\/919007718983?text=Hi%20SRS%2C%20I%20want%20to%20book%20water%20tank%20cleaning\" style=\"display:inline-block;background:#25D366;color:#fff;font-weight:700;padding:11px 20px;border-radius:999px;text-decoration:none;margin:4px\" target=\"_blank\" rel=\"noopener\">Book on WhatsApp<\/a>\n<a href=\"https:\/\/wa.me\/919007718983?text=%E0%A6%A8%E0%A6%AE%E0%A6%B8%E0%A7%8D%E0%A6%95%E0%A6%BE%E0%A6%B0%20SRS\" style=\"display:inline-block;background:#25D366;color:#fff;font-weight:700;padding:11px 20px;border-radius:999px;text-decoration:none;margin:4px\" lang=\"bn\" target=\"_blank\" rel=\"noopener\">WhatsApp-\u098f \u09ac\u09c1\u0995 \u0995\u09b0\u09c1\u09a8<\/a>\n<a href=\"tel:+919007718983\" style=\"display:inline-block;background:#fff;color:#0f3d37;font-weight:700;padding:11px 20px;border-radius:999px;text-decoration:none;margin:4px\">Call now<\/a>\n<\/div>\n\n\n\n<div style=\"display:flex;flex-wrap:wrap;gap:12px;margin:24px 0\"><div style=\"flex:1;min-width:220px;background:#F0F6F5;border-radius:10px;padding:14px\"><span style=\"font-size:13px;color:#5f7d79\">\u25c0 Previous<\/span><br><a href=\"https:\/\/srsfms.in\/blog\/how-often-clean-water-tank-kolkata\/\"><strong>How Often Should You Clean Your Water Tank in Kolkata?<\/strong><\/a><\/div><div style=\"flex:1;min-width:220px;background:#F0F6F5;border-radius:10px;padding:14px\"><span style=\"font-size:13px;color:#5f7d79\">Read next \u25b6<\/span><br><a href=\"https:\/\/srsfms.in\/blog\/underground-reservoir-cleaning-after-monsoon-kolkata\/\"><strong>Underground Reservoir Cleaning After Monsoon: What Kolkata Homes Miss<\/strong><\/a><\/div><\/div>\n\n\n\n<div class=\"wp-block-group has-border-color has-background is-layout-flow wp-block-group-is-layout-flow\" style=\"border-color:#DEEDEB;border-width:1px;border-radius:12px;background-color:#F6FBFA;margin-top:24px;padding-top:18px;padding-right:22px;padding-bottom:18px;padding-left:22px\">\n<h3 class=\"wp-block-heading has-text-color\" style=\"color:#007667;font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.641), 19px);\"><span class=\"ez-toc-section\" id=\"Festival_Water_Care_series_all_parts\"><\/span>Festival Water Care series: all parts<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><a href=\"https:\/\/srsfms.in\/blog\/how-often-clean-water-tank-kolkata\/\">How Often Should You Clean Your Water Tank in Kolkata?<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/srsfms.in\/blog\/vijaya-dashami-water-tank-cleaning-kolkata\/\">This Dussehra, Defeat the 10 Hidden Enemies Inside Your Water Tank<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/srsfms.in\/blog\/underground-reservoir-cleaning-after-monsoon-kolkata\/\">Underground Reservoir Cleaning After Monsoon: What Kolkata Homes Miss<\/a><\/li>\n\n\n\n<li>PVC (Sintex) vs Cement Tank: Why the Cleaning Method Is Different <em>(coming soon)<\/em><\/li>\n\n\n\n<li>Diwali Guests Coming? Light Up Your Home and Clean Your Water Tank First <em>(coming soon)<\/em><\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:14px\"><a href=\"https:\/\/srsfms.in\/blog\/\">See all articles \u2192<\/a><\/p>\n<\/div>\n\n\n\n<p style=\"font-size:15px;line-height:1.9\"><strong>Related services:<\/strong> <a href=\"https:\/\/srsfms.in\/home-tank-cleaning\/\">Residential Tank Cleaning \u2192<\/a> \u00b7 <a href=\"https:\/\/srsfms.in\/apartment-tank-cleaning\/\">Apartment Tank Cleaning \u2192<\/a> \u00b7 <a href=\"https:\/\/srsfms.in\/commercial-tank-cleaning\/#amc\">Commercial Tank Cleaning &amp; AMC \u2192<\/a> \u00b7 <a href=\"https:\/\/srsfms.in\/faq\/\">All FAQs \u2192<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>This Dussehra, find the 10 hidden enemies in your water tank: germs, algae, mud, rust and slime. See how a 6-monthly clean helps. Book SRS on WhatsApp.<\/p>\n","protected":false},"author":1,"featured_media":26,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6,1],"tags":[14,8,15,9,11,7],"class_list":["post-16","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-festival-water-care","category-blog","tag-algae","tag-kolkata","tag-slimy-layers","tag-tank-care-basics","tag-water-health","tag-water-tank-cleaning"],"_links":{"self":[{"href":"https:\/\/srsfms.in\/blog\/wp-json\/wp\/v2\/posts\/16","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/srsfms.in\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/srsfms.in\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/srsfms.in\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/srsfms.in\/blog\/wp-json\/wp\/v2\/comments?post=16"}],"version-history":[{"count":5,"href":"https:\/\/srsfms.in\/blog\/wp-json\/wp\/v2\/posts\/16\/revisions"}],"predecessor-version":[{"id":41,"href":"https:\/\/srsfms.in\/blog\/wp-json\/wp\/v2\/posts\/16\/revisions\/41"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/srsfms.in\/blog\/wp-json\/wp\/v2\/media\/26"}],"wp:attachment":[{"href":"https:\/\/srsfms.in\/blog\/wp-json\/wp\/v2\/media?parent=16"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/srsfms.in\/blog\/wp-json\/wp\/v2\/categories?post=16"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/srsfms.in\/blog\/wp-json\/wp\/v2\/tags?post=16"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}