UNDERGROUND TANK CLEANING · SUMP CLEANING · DELHI
Underground water tank (sump) cleaning in Delhi.
In a Delhi kothi or builder floor, the Delhi Jal Board's water lands in the sump first, and so does whatever a tanker or borewell brings. We clean underground tanks under driveways, stilt parking and stairs across Delhi, always with two technicians, and send photos of the sump floor before and after.
- Two technicians, every sump
- At least 3 hours a sump
- Photos of the floor, not just the walls
- Fixed price incl. GST
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- Same team on repeat visits
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*Termite warranty depends on the chemical chosen and is written on your job card. Same-day service depends on slot availability.
Quick answer
Underground water tank (sump) cleaning in Delhi costs ₹1,199 for up to 1,500 litres, ₹2,799 for 5,001 to 10,000 litres and up to ₹4,499 for 20,001 to 30,000 litres, including GST, and 365-plan members get ₹149 off each extra tank in the same visit. Every sump is cleaned by two technicians, one inside and one at the opening, and we allow at least three hours a sump. We clean sumps in Model Town, Punjabi Bagh, Rohini, Pitampura, Greater Kailash, Defence Colony and the rest of Delhi.Underground tank cleaning price in Delhi
| Tank | Capacity | Price (incl. GST) |
|---|---|---|
| Overhead | Up to 1,000 L | ₹699 |
| Overhead | 1,001-2,000 L | ₹999 |
| Overhead | 2,001-5,000 L | ₹1,499 |
| Underground sump | Up to 1,500 L | ₹1,199 |
| Underground sump | 1,501-3,000 L | ₹1,499 |
| Underground sump | 3,001-5,000 L | ₹1,999 |
| Underground sump | 5,001-10,000 L | ₹2,799 |
| Underground sump | 10,001-15,000 L | ₹3,299 |
| Underground sump | 15,001-20,000 L | ₹3,799 |
| Underground sump | 20,001-30,000 L | ₹4,499 |
| Above 30,000 L | Society / commercial | Free visit, then fixed quote |
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365-plan members get ₹149 off each extra tank cleaned on the same visit.
| Sump capacity | Price incl. GST |
|---|---|
| Above 30,000 litres | Fixed quote after a free visit |
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Clean the roof tank in the same visit: ₹699 for up to 1,000 litres, or ₹550 for 365-plan members (₹149 off each extra tank). Source: AHC price book, 6 Oct 2026.
Typical Delhi sumps: a DDA-era single-storey house often has a small sump of 1,500 to 3,000 litres; a rebuilt four-floor builder building usually shares one larger sump, 5,000 to 10,000 litres, feeding four roof tanks; a large South Delhi kothi can have 10,000 litres or more. To work out yours: inside length × width × depth in feet × 28.3. A sump 8 × 5 × 5 ft is 200 cubic feet, about 5,660 litres (₹2,799).
Sumps in Delhi: what to know
Delhi Jal Board water arrives at set hours and often at low pressure, too low to reach a roof tank on its own. That's why most Delhi kothis and builder floors have a sump: the water flows into the underground tank, and a motor lifts it to the tanks on the roof. It also means the sump receives everything first. Treated DJB water leaves a fine silt and a slimy film on the walls; tanker water, which many colonies rely on in May and June, often carries visible mud; and borewell water in most of Delhi is brackish, leaving white scale and fine sediment. The sump collects all three, which is why its floor is usually the dirtiest surface in a home's water system.
Delhi sumps are also easy to forget. In builder floors rebuilt from old kothis, the sump is often under the stilt parking, with a cover beneath a parked car; in older houses it may be under the stairs or the front driveway, sometimes with the cover tiled or painted over. When four families share one sump, nobody owns the job, and buyers of a new floor rarely know when it was last opened. If you can't remember, it's due.
Clean the sump and the roof tank together, sump first. If only the roof tank is cleaned, the first fill brings the sump's sludge straight back up.
Sources: CGWB Ground Water Year Book 2021-22, as reported by The Pioneer (2023): groundwater brackish across most of Delhi. Delhi government statement reported by The Week (2 Apr 2025): tankers deployed against the supply gap.
Where Delhi sumps hide, and what we need from you
| Where the sump is | Common in | What we need |
|---|---|---|
| Under the stilt parking | Rebuilt builder floors in Rohini, Pitampura, Punjabi Bagh, Malviya Nagar | Car moved off the cover; agreement from the other floors to switch off the shared motor |
| Under the front driveway | Kothis in Model Town, Defence Colony, Greater Kailash | Gate access; the cover clear of pots and vehicles |
| Under the stairs or a back courtyard | Older single-storey and DDA-era houses | Space to place the pump and hose; a drain nearby for the dirty water |
| Cover tiled or painted over | Older houses after renovation | Tell us first; opening it may chip the tiles, and fixing them is a mason's job |
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Tell us the DJB supply hours in your lane, so we drain the sump after the day's supply and refill it at the next one.
How we work in a sump
A sump is a confined space: one opening, little air and, after weeks closed, sometimes stale or harmful air. Most deaths in confined spaces are people who went in to help someone else. So we never send one person alone: one technician works inside, one stays at the opening throughout, and the sump is opened and ventilated before anyone enters. Then the 9 steps: inspect, drain, shovel out the sludge, pressure-wash, scrub walls, corners and the underside of the cover, vacuum, disinfect, rinse, and photos on WhatsApp. Full safety and process: Underground tank cleaning →
Source: NIOSH (1986): about 60% of confined-space fatalities were would-be rescuers.
After waterlogging: clean the sump before you use it
Many Delhi colonies flood in a heavy monsoon downpour, and a sump cover at ground level is the lowest point in the house. If street water has stood over the cover, assume it has got in: don't drink or cook with the water, run it out, and book a sump clean once the lane has drained. Check the cover's rim and seal while it's open; a cracked rim lets floodwater, and sometimes drain water, back in.
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Sump cleaning in Delhi: your questions
How much does underground tank cleaning cost in Delhi?
How often should a Delhi sump be cleaned?
Our builder floor shares one sump. Who books?
How long will we be without water?
Neeche wali tanki (sump) ki safai kitni baar karwani chahiye?
Related
Areas we cover in Delhi
- Dwarka
- Rohini
- Janakpuri
- Vasant Kunj
- Saket
- Greater Kailash
- Lajpat Nagar
- Defence Colony
- Hauz Khas
- Malviya Nagar
- Mayur Vihar
- Laxmi Nagar
- Preet Vihar
- Pitampura
- Shalimar Bagh
- Punjabi Bagh
- Rajouri Garden
- Paschim Vihar
- Karol Bagh
- Model Town
Don't see your area? We probably cover it. Ask on WhatsApp.
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