Part 5 of 14 · Festival Water Care series
দীপাবলিতে অতিথি আসছেন? ঘর সাজানোর আগে জলের ট্যাঙ্ক পরিষ্কার করুন
দীপাবলি আর কালীপুজোর আগে ঘরের সঙ্গে জলের ট্যাঙ্কও পরিষ্কার করান। মিষ্টি বানানো, পুজো আর অতিথিদের খাওয়ার জল সবই আসে এই ট্যাঙ্ক থেকে। ছাদের ট্যাঙ্ক পরিষ্কারে সাধারণত ৪০ থেকে ৬০ মিনিট আর মাটির নিচের ট্যাঙ্কে ১ থেকে দেড় ঘণ্টা লাগে। পরিষ্কারের পর H2O2 অ্যান্টি-ব্যাকটেরিয়াল স্প্রে আর UV-রে (UV ল্যাম্প টাইপ-C) দিয়ে জীবাণুমুক্ত করা হয়। উৎসবের কয়েক দিন আগেই বুক করুন, যাতে নিশ্চিন্তে আলো জ্বালাতে পারেন।
Diwali week is busy. You wash the curtains, clean the fans, paint the walls and light up the balcony. In Kolkata, many families also prepare for Kali Puja on the same night. But one thing often gets missed: the water tank on the roof, or the one under the building.
Why should the water tank be on your Diwali cleaning list?
Almost every part of the festival uses water from your tank:
- Cooking sweets, snacks and bhog in the kitchen
- Washing the puja items and the puja room
- Bathing before the puja
- Drinking water and tea for your guests
- Extra washing and cleaning all week
More guests means more water. If the tank is dirty, that dirt reaches every glass and every plate. Water tank cleaning before Diwali makes sure the water is as fresh as the rest of your home.
Diwali celebrates light over darkness. As we light diyas to welcome Maa Lakshmi, and as Bengal prays to Maa Kali for protection, it feels right that the water your family uses every day is clean too. The inside of a water tank stays dark all year. At the end of a professional clean, UV light from a UV-C lamp reaches into that darkness and kills the germs left behind.
What could be hiding inside your tank right now?
A tank can look clear from the top and still be dirty inside. Sludge and sand settle on the floor. Slime and algae grow on the walls. In plastic (PVC) tanks, an iron and sediment layer builds up quickly and can crack, and germs grow inside those cracks. Read about the 10 hidden enemies inside your water tank.
Book a clean before the festival if you notice any of these:
- Muddy, yellow or brown water from the taps
- Sand or rust in buckets or in your water purifier filter
- A smell from the water
- A slimy feel on the walls near the lid
- The tank has not been cleaned for more than 6 months
What is the 5-step checklist for water tank cleaning before Diwali?
- Check the date. When was the tank last cleaned? If it has been more than 6 months, book now. Here is why every 6 months matters in Kolkata.
- Book a few days early. Then the tank is clean and full again before your guests arrive.
- Clean the underground tank first. It fills your roof tank, so its dirt travels up. Read our post on underground reservoir cleaning.
- Tell us your tank type. Plastic (PVC) and cement tanks are cleaned differently. See plastic vs cement tank cleaning.
- Keep the lid closed. After cleaning, close the tank lid tightly so dust, leaves and insects stay out during the festival.
How long does it take, and can SRS come at night?
An overhead tank in a typical 6 to 8 flat building (plastic or cement, up to 2,000 litres) usually takes 40 to 60 minutes. An underground tank usually takes 1 to 1.5 hours.
SRS is available 24×7. You can call or WhatsApp anytime, and our team can also attend urgent tank cleaning at any hour. That helps a lot in the busy festival week.
Every tank gets the same 6-stage mechanized process: de-watering, sludge removal, high-pressure cleaning, vacuum cleaning, an H2O2 anti-bacterial spray and UV-C sterilization.
Cleaning tanks for a whole apartment or housing society?
If you look after a building or a housing society, plan to clean all the tanks before the festival. Each SRS team has 2 experienced cleaners, and 1 to 4 teams come depending on the size of the tanks. For regular cleaning through the year, see our apartment tank cleaning service and AMC (Annual Maintenance Contract).
This Diwali, let your home shine on the outside and stay clean on the inside, right down to the water your family drinks.
Frequently asked questions
When are Diwali and Kali Puja in 2026?
Diwali and Kali Puja both fall on Sunday, 8 November 2026. Please check your family panjika for the exact puja timings.
When should I book water tank cleaning before Diwali?
A few days before the festival is best, so the tank is clean and full again before guests arrive. If your tank has not been cleaned for 6 months, book it now.
Can SRS clean my water tank at night or at short notice?
Yes. SRS is available 24×7. You can call or WhatsApp anytime, and our team can also attend urgent tank cleaning at any hour.
Do you clean water tanks in Kolkata and Howrah during the festival week?
Yes. SRS – Water Tank Cleaning & Solution cleans plastic (PVC) and cement tanks, overhead and underground, in homes, apartments and offices across Kolkata and Howrah.
Want a clean tank before the diyas are lit? Send your area, tank type and size on WhatsApp at 9007718983, and we will plan your water tank cleaning before Diwali.
Diwali guests coming? Book your tank cleaning now.
Send your area, tank type and size on WhatsApp — most messages get a reply within 30 minutes.
Book on WhatsApp WhatsApp-এ বুক করুন Call nowFestival Water Care series: all parts
- How Often Should You Clean Your Water Tank in Kolkata?
- This Dussehra, Defeat the 10 Hidden Enemies Inside Your Water Tank
- Underground Reservoir Cleaning After Monsoon: What Kolkata Homes Miss
- Plastic (PVC) vs Cement Tank: Why the Cleaning Method Is Different
- Diwali Guests Coming? Light Up Your Home and Clean Your Water Tank First
- This Bhai Phonta, Protect Your Family’s Health with Safe Water (coming soon)
- Chhath Puja and the Purity of Water: Start at Home (coming soon)
Related services: Residential Tank Cleaning → · Apartment Tank Cleaning → · Commercial Tank Cleaning & AMC → · All FAQs →