Frequently Asked Questions

Yes. Contamination behaves the same way in a 500-litre home tank as it does in a 5,00,000-litre institutional reservoir — sediment settles, biofilm forms on the walls, and both need de-watering, mechanical scrubbing and UV disinfection to actually clear. So SRS runs the identical 6-stage process for independent homes and bungalows, apartment and housing societies, and commercial/institutional properties like hospitals, schools, corporate offices and government buildings across Kolkata — only the team size and equipment scale up with tank capacity, not the method.

We serve South, East, North, Central and Greater Kolkata (including the Howrah belt), covering Behala, Garia, New Town, Salt Lake, Dunlop, Airport Gate 1, Beliaghata, Park Street, Nabanna Area, Howrah AC Market and well over a hundred neighbourhoods across the city — see our full service area list for the complete coverage map. Message us on WhatsApp to confirm coverage for your exact location.

Only where the tank actually needs it. In PVC (Sintex-type) tanks, iron and sediment build up as a layer stuck to the plastic walls, so SRS applies a cleaning chemical during the clean to loosen that layer before it is pressure-washed and vacuumed out. Cement (RCC) tanks don't need this — their deposits come off mechanically through de-watering, sludge removal and high-pressure jet cleaning. After cleaning, every tank, PVC or cement, gets an anti-bacterial spray of hydrogen peroxide (H2O2), which breaks down into water and oxygen, and then UV radiation sterilization to kill any bacteria still left in the tank.

Yes. ISO 9001 certification means SRS follows a documented, audited quality process on every job, not an informal routine that varies by which technician shows up — so the same 6-stage standard applies whether it's your 20th cleaning with us or your 1st. GSTIN, UDYAM and MSME registration mean SRS is a legally accountable, traceable business, which matters when you're letting a contractor into your building's water supply rather than just its driveway.

Yes. A single cleaning isn't a permanent fix — residual moisture and organic matter left in any tank let bacteria recolonise and start rebuilding a biofilm within months, well before it's visible. An AMC schedules the next cleaning at the interval that stays ahead of that regrowth curve instead of waiting for sediment or odour to become noticeable. We offer Annual Maintenance Contracts for apartment/housing societies and commercial or institutional properties such as hospitals, schools, corporate offices and government buildings.

SRS - Water Tank Cleaning & Solution typically completes an overhead tank in a 6–8 flat Kolkata building — RCC or PVC up to 2000L — in 40 minutes to an hour. Underground tanks run a little longer, usually 1 to 1.5 hours. The exact time shifts with how much sediment has built up, how many chambers the tank has, and its overall size.

SRS - Water Tank Cleaning & Solution recommends every 6 months to keep water clean and safe, especially given Kolkata's humidity and hard water. If your tank collects heavy sediment or algae faster, schedule it sooner.

Cost depends on your tank's size, type, and how many tanks need cleaning. Message SRS - Water Tank Cleaning & Solution on WhatsApp with these details and we'll share an exact quote within minutes — no hidden charges.

Call or WhatsApp SRS - Water Tank Cleaning & Solution at 9007718983 with your area, tank type, size, and how many tanks need cleaning — we'll send a quote right away. Once you confirm, we lock in your slot.

We typically reply within 30 minutes on WhatsApp and can usually schedule a visit within a day or two, depending on your building's slot preference.

We accept Cash, UPI, Online Payment, Cheque and NEFT.

Possibly — we regularly cover pockets just beyond this list too. WhatsApp us your locality and we'll confirm directly rather than guess from a list.

We handle leak and seepage repair, tap and valve fitting or replacement, pipe fitting and modification (PVC, CPVC, GI, PPR), bathroom and kitchen plumbing, and water tank/pump plumbing connections. A clean tank still depends on sound pipework to deliver that water to your taps, so we treat plumbing as a natural extension of tank cleaning rather than a separate trade.

We aim to cover the same areas we serve for tank cleaning across South, East, North, Central and Greater Kolkata, including the Howrah belt — see our service area list for the full coverage map. WhatsApp us to confirm coverage for your exact location.

Call or WhatsApp us at 9007718983 with your requirement and location, and we'll confirm a convenient time — for anything involving pipe replacement or a tank connection, mentioning your pipe material (PVC, CPVC, GI or PPR) upfront helps us bring the right fittings on the first visit.

Yes — sink and drain pipe work, RO inlet connections, geyser piping, washbasin, commode (Western/Indian), flush tank, bathtub and shower panel fitting and maintenance. Kitchen and bathroom plumbing share supply and waste lines behind the wall, so we look at the connected fixtures together rather than treating each tap or drain as an isolated job.

Rust and mineral scale that have built up over years don't fully dissolve in a single pass — each visit clears another layer, which is why most homes need 3-4 visits for a thorough, effective clean rather than one long session.

We use hydrochloric acid — it's the chemical that reliably dissolves the rust and mineral scale built up inside old GI pipes, rather than just loosening the surface layer. It's left in the pipeline for about 30 minutes and then fully flushed out with clean water for about 15 minutes. Because it's a strong chemical, please read the notice below before booking.

Please have any old or weak pipelines and valves assessed beforehand — we are not responsible for spillage or damage caused by pre-existing pipe or valve condition.

Yes. Hydrochloric acid moving through the pipeline can damage the internal components of connected appliances, so geysers, water purifiers, washing machines and dishwashers are switched off before we start, and only reconnected once the cleaning and flush are fully complete.