Frequently Asked Questions

For most Delhi homes, every 6 months. If you’re on borewell water or your building has older plumbing, every 4 months is safer. Restaurants and food businesses should clean quarterly. We’ve written a full guide on this if you want to dig deeper.

About 75–90 minutes for a typical 1,000-litre residential overhead tank. Underground sumps take 2–2.5 hours. Society reservoirs and industrial tanks can take 3–5 hours depending on size and access.

It helps if someone is around to give us roof access and confirm the tank is the right one, but you don’t have to watch the whole process. Many clients leave us to it and check the photos and certificate afterwards.

Not necessarily. If the tank was just refilled, we’ll pump out the usable water into a storage drum so you can use it for non-drinking purposes (floor washing, plants). Only the dirty bottom layer gets discarded.

Yes, in most South Delhi and Okhla areas, we can usually reach you the same day if you book early. Slots fill faster on weekends and during peak summer, so morning calls are best.

Light rain is fine — most tanks have covers or roof shelters above them. For heavy rain, we’ll call you 1–2 hours before to reschedule at no charge. Rooftop work in storms is a safety risk we don’t take with our crew.

Residential overhead tanks start at ₹600 (up to 750L) and ₹750 (up to 1,000L). Underground sumps are ₹1,500–2,500 by size. Society and commercial tanks are quoted on visit. Full breakdown in our pricing guide.

No. The price you’re quoted on the booking call is what you pay. The only extras (and we tell you on the call, never on the day) would be: tank repairs if you ask for them, multiple tanks at the same site, or specialty disinfection after a contamination event.

Yes. AMC contracts (typically 4 visits per year) save 15–25% compared to per-visit booking. We do AMC for several societies in CR Park, Defence Colony, and Greater Kailash. Same crew comes each time.

Cash, UPI (Google Pay, PhonePe, Paytm), and bank transfer. Payment is collected on completion, after you’ve seen the after-photos. We send a GST-friendly invoice on request.

Yes — just ask on the booking call or after the job. We share GST-compliant invoices for both residential and commercial bookings. AMC contracts come with quarterly GST invoices automatically.

Six steps: drainage, sludge removal, vacuum cleaning, high-pressure jet wash, food-grade anti-bacterial wash, and a quality report with photos and certificate. Full breakdown in our step-by-step process guide.

Food-grade sodium hypochlorite for disinfection (FSSAI-acceptable for potable water systems), and a mild food-grade detergent for the scrubbing step. We never use industrial bleach or hardware-shop chemicals — those leave residue you don’t want in your drinking water.

Yes. The disinfectant is fully rinsed out before refill, and food-grade sodium hypochlorite is the same compound used in municipal water treatment. After our cleaning, the water is safer than it was before, not more chemical.

No. We use food-grade brushes (never metal scrapers, which scratch plastic tanks) and pressure-controlled jet wash. If we spot any pre-existing crack or fitting issue, we point it out and quote separately for repair.

Yes — every job. The certificate has date and time, tank capacity, chemicals used, crew names, and the date of service. Useful for societies, AMC records, and FSSAI inspections at restaurants.

Same 6-step process, different brushes and pressure settings. Plastic tanks (popular brands like Sintex, Plasto, Vectus) need food-grade soft-bristle brushes — metal scrapers scratch the surface and create new bacteria pockets. Concrete (RCC) tanks need higher jet pressure to clean the textured walls. Steel tanks need extra care around weld joints. Our crew adjusts on site.

The bulk drains down the rooftop drain or building drain line. The thick sludge from the bottom — the worst part — gets scooped into a sealed bucket and disposed of properly off-site. We don’t flush sludge down your building’s plumbing because it just settles in the pipes.

Yes. The most common issues from contaminated tank water in Delhi are stomach infections (typhoid, hepatitis A, gastroenteritis), skin rashes from bathing, and persistent throat irritation. Children, elderly family members, and anyone with weak immunity are most at risk. The water often looks fine — the bacteria you can’t see are the real problem.

Yes. A purifier filters the water that comes out of your kitchen tap. But the water you bathe in, brush your teeth with, wash vegetables in, and use to cook? That comes straight from the tank, unfiltered. Plus, dirty tank water reduces your purifier’s filter life dramatically — you end up replacing cartridges twice as often.

For the first 6–12 hours after refill, you may notice a very faint chlorine smell — that’s residual disinfectant clearing out, fully safe to use. By the next day it’s gone. The water should taste cleaner, not more chemical. If you ever notice a strong chlorine smell that persists, call us.

Three quick checks:

Visual: fill a clear glass and look — water should be visually clear with no specks settling at the bottom after 5 minutes.
Smell: neutral, not musty.
Taste: clean, no metallic or earthy aftertaste.

For commercial clients we can arrange a paid third-party lab water test.

All crew are police-verified, wear KaamGenie uniforms with photo ID, and are covered by job-site insurance. We send the crew member’s name and photo on WhatsApp before they arrive.

Yes. Four to six photos at the start (showing tank condition before), and the same angles at the end. They go to you with the service certificate. If a cleaner doesn’t take photos, you have no record of what they did — that’s a red flag.

Call us. We come back and redo the work at no charge. If anything goes wrong because of our cleaning, it’s on us to fix.

Yellow or brown tinted water, a musty or chlorine smell, sediment at the bottom of stored water, or skin irritation after bathing. Any of these usually means you’re past due. If your last cleaning was over 12 months ago, book regardless.

Yes — stop using the water immediately and book the same day if possible. We treat this as a contamination event: the cleaning takes longer, requires a stronger disinfection cycle, and costs ₹500–1,000 extra than a routine cleaning. After this kind of event, we recommend a follow-up water test.

All of Delhi today — South Delhi, Okhla, Jamia Nagar, and 20+ other areas with same-day service. Noida, Gurgaon, Ghaziabad and Faridabad are rolling out next.

Yes — sumps need confined-space safety gear and an extra crew member, which is why pricing is higher (₹1,500–2,500 by size). We do many sumps across Saket, Defence Colony, and Greater Kailash kothis.

Yes — from small DDA flat buildings (4–8 flats sharing one rooftop tank) to large reservoirs serving entire societies. We work directly with RWAs and provide consolidated invoices and AMC contracts.

Three ways: call +91 95607 85751, message us on WhatsApp at the same number, or use the booking form on our website. We'll confirm shortly.

Yes. We work seven days a week, including most public holidays. Sunday morning is actually one of our busiest slots.

Yes, always. You don’t know when the previous owner last cleaned it, what was stored in it, or whether the tank sat empty for months collecting dust and insects. A pre-move-in cleaning is the cheapest peace of mind you’ll buy in the whole moving process.