Combined Sump + Overhead Tank Cleaning in Delhi

What is combined sump + overhead tank cleaning?

Combined sump + overhead cleaning is a single-visit package that cleans both of your water tanks together — the underground sump (the ground-level or below-ground reservoir that first receives DJB or tanker water) and the overhead tank on your roof (which the pump fills for daily use). Both get the full drain, scrub, vacuum, high-pressure rinse and food-grade disinfection, done in sequence by the same crew so your whole water path is clean end to end.

This is built for the typical Delhi kothi, builder floor and independent house, where water flows sump → motor → overhead → taps. If you clean only the overhead but leave a silted sump, the next pump cycle pushes that muck straight back up. Societies with a common underground reservoir plus a terrace tank need it too. Anyone with both tanks who wants the job done properly — and cheaper — should book the combo rather than two separate visits.

Our combined sump + overhead tank cleaning process

Same thorough process for every job — no shortcuts.

1. Assess both tanks — The crew inspects the sump and the overhead tank first — noting sizes, sediment levels, algae and any lid or inlet damage — and plans the sequence so water and access are handled once, not twice.
2. Clean the sump first — We start underground: drain the sump, manually scrub walls and floor with food-grade brushes, and wet-vacuum out the heavier silt and grit that always settles in the lowest tank.
3. Disinfect & seal the sump — Food-grade chlorine or hydrogen-peroxide disinfection with full contact time, a clean rinse, and a check of the lid and inlet so the freshly cleaned sump stays sealed against dust and pests.
4. Clean the overhead tank — The same crew moves to the roof and repeats the full process on the overhead tank — scrub, vacuum, high-pressure rinse — so the tank the sump feeds is equally clean.
5. Disinfect the overhead & flush the line — We disinfect the overhead tank, then run the pump briefly so the connecting pipe between sump and overhead is flushed with clean, treated water rather than leftover residue.
6. Refill & before/after proof for both — Both tanks are refilled from your fresh supply and we send before/after photos of the sump and the overhead on WhatsApp, so you can see the entire storage path is clean.

What sump + overhead combo costs in Delhi

The combo is priced as a bundle, not two full-price jobs. Because one crew does both tanks in a single trip, you save on the second call-out. Below are typical package prices — final quote depends on the exact size of each tank.

Plan / scope	Price
Small home combo — sump up to 1000L + overhead up to 1000L	₹1,499
Standard kothi combo — sump up to 2000L + overhead up to 1500L	₹2,199
Large kothi combo — sump up to 3000L + overhead up to 2000L	₹2,899
Builder floor / big house combo — sump up to 5000L + overhead up to 3000L	₹3,999
Society combo — large common sump + terrace tank	Quoted per visit (bundle discount)

Prices include GST for residential customers; commercial premises get a separate GST invoice. Call 95603 66362 for an exact quote.

Why cleaning only one tank is a waste of money

In a two-tank home the water is only as clean as its dirtiest tank. If you clean the shiny overhead on the roof but leave the sump full of silt, the very next time the motor runs it pumps sump water — sediment, biofilm and all — back up into the tank you just paid to clean. Within days the overhead is fouled again and the money is gone.

The sump is usually the dirtier of the two. It sits at ground level, fills directly from DJB mains and tankers that carry the most silt, and often has a poorly sealed lid at floor level where dust, insects and even small animals get in. It’s also the tank people forget, because they never see inside it — so it can hold years of settled sludge.

Doing both together also means the connecting pipe gets flushed with clean water at the end, so there’s no residue sitting in the line between a clean sump and a clean overhead. It’s the only way to genuinely reset your whole water path in one go — and because it’s one crew, one visit, it costs less than two separate overhead and sump bookings.

How much the combo saves — and who should book it

Booked separately, a sump clean and an overhead clean each carry their own call-out and setup, and often two visits on two days. The combo folds them into one trip, so you save on the second call-out — typically a few hundred rupees versus the two jobs added together, and a whole day of coordination. You also only arrange rooftop and sump access, and one water shut-off, once.

The combo is the right choice for almost any Delhi kothi, independent house or builder floor with both a ground sump and a terrace tank — especially borewell and tanker-fed homes in the Vasant Kunj and Chattarpur belt where silt load is high. If you want this done on a repeating schedule, the same bundle logic runs even cheaper under our annual maintenance contract. Call 95603 66362 with both tank sizes for an exact package quote.

Common questions

“Why should I clean the sump and overhead tank together?” Because in a two-tank home the pump moves water from the sump up to the overhead. If you clean only the overhead and leave a silted sump, the next pump cycle pushes that dirt straight back up and re-contaminates the clean tank within days. Doing both in one visit resets your entire water path properly.

“How much does the sump + overhead combo cost in Delhi?” Typical packages run from ₹1,499 for a small home (sump + overhead up to 1000L each), ₹2,199 for a standard kothi, and ₹3,999 for a large builder floor. Society reservoirs are quoted per visit with a bundle discount. Final price depends on the exact size of each tank — share both sizes for a firm quote.

“Is the combo cheaper than booking the two cleanings separately?” Yes. Because one crew cleans both tanks in a single trip, you avoid a second call-out and setup charge, saving a few hundred rupees versus the two jobs booked apart — plus you save a whole extra day of access and water shut-off coordination.

“Can both tanks really be cleaned in one visit?” Yes. The same crew cleans the sump first, then moves to the rooftop overhead tank, and finally flushes the connecting pipe with clean water. A standard kothi combo takes roughly 2.5 to 3.5 hours depending on tank sizes and access. You get before/after photos of both tanks on WhatsApp.

“My sump hasn’t been opened in years — can you still clean it?” Yes, and that’s exactly the tank most in need of it. Sumps at ground level collect the heaviest silt from DJB and tanker fills and are often forgotten because you never see inside them. We drain, scrub, wet-vacuum the settled sludge, and disinfect it fully as part of the combo.

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Ready to book?

Call +91 95603 66362, WhatsApp here, or use the booking button at the top. Same-day where possible across Delhi NCR.