Signs Your Water Tank Needs Cleaning
Raj Babbar · 8 min read
Home › Water Tank Cleaning › Overhead Tank Cleaning › New Friends Colony
New Friends Colony’s large kothis run generous rooftop tanks that often go years unopened — yet they are the last stop before every tap. KaamGenie cleans overhead tanks across the colony, food-grade and documented. From ₹699.
New Friends Colony is an elite enclave of large kothis and premium builder floors around its community centre, close to Jamia. Supply is mainly DJB with some private borewells, and big plots carry old underground sumps that pump water up to large individual rooftop overhead tanks. Because the houses and tanks are generously sized, and the same families have often lived here for decades, those rooftop tanks are frequently left unopened for years — while remaining the final holding point before every kitchen and bathroom tap in the house.
KaamGenie cleans these long-unopened rooftop tanks thoroughly and discreetly — draining, removing the built-up sludge, jet-washing the scale, hand-scrubbing the corners and inlets, then a food-grade disinfectant wash before refilling, with dated before-and-after photos on WhatsApp. Large tanks carrying years of accumulation are exactly our job. This page is part of our water tank cleaning in New Friends Colony service and focuses specifically on the overhead (rooftop) tanks.
The large rooftop tanks on New Friends Colony’s kothis rarely empty fully, because they are sized for spacious houses that draw only a fraction of the stored water each day. That means the oldest water and settled sludge stay at the bottom for months on end while clear water is taken off the top, and over years without opening, the lower layer thickens into a genuine sediment bed while biofilm coats the walls — all sitting directly above the taps the family uses for drinking and cooking.
Many of these tanks are old RCC or early plastic units, and the old underground sumps that feed them have aged too, passing silt upward with each pumping cycle. Lids that no longer seal let in terrace dust, leaves from the colony’s mature trees and light that encourages algae, while summer borewell top-ups add hard-water scale. Because the households rely on staff and seldom check the roof, all of this builds unseen. One proper annual clean resets the tank and clears years of accumulation at once.
No travel charge anywhere in New Friends Colony. The final price is confirmed on the call before we come — it depends only on tank size and access.
See it done in 45 seconds
Watch our web story on how a tank is really cleaned — drain, de-sludge, jet-wash, disinfect.
We reach every pocket of New Friends Colony — and there’s no travel charge to any of them:
“Do you clean the large rooftop tanks on the kothis in C Block, New Friends Colony?” Yes. C Block is on our regular New Friends Colony round, along with the A, B and D blocks and the homes near the community centre. We clean the large individual rooftop tanks here, including old units that have not been opened in years, and coordinate the timing with your household staff. Tell us the tank size when you call.
“What does it cost to clean a large rooftop tank on a New Friends Colony kothi?” Cleaning starts at ₹699 for a 500-litre tank and ₹899 for a 1,000-litre one. The bigger 1,001 to 2,000-litre rooftop tanks common on the kothis here are ₹1,299 to ₹1,499, and anything larger is quoted by capacity. If a tank holds years of accumulated sludge, the price still holds — we simply take the time to clear it out fully.
“Can you clean my New Friends Colony rooftop tank the same day?” Usually, yes. Call the KaamGenie team on 95603 66362 and, schedule permitting, we will send a crew to your New Friends Colony block the same day. A large kothi rooftop tank takes about two hours, more if it holds years of buildup, and we work quietly around the household to keep disruption to a minimum.
“Why does my New Friends Colony rooftop tank get dirty when the water looks fine?” Because the tank is large and rarely emptied, sludge settles and stays at the bottom for years while clear water is drawn off the top, so the household notices nothing until it worsens. Old unsealing lids let in dust, leaves and light that feed algae, ageing sumps pass silt upward, and borewell top-ups add scale. The buildup is real even when the tap water looks clean.
“My New Friends Colony tank is old — is a concrete tank cleaned differently from Sintex?” Yes. Old RCC concrete tanks build heavy scale and develop rough, porous walls that hold bacteria, so they need firm jetting and careful scrubbing. Sintex and plastic tanks need gentler pressure to avoid cracking but grow algae faster because light passes through. New Friends Colony has both, and we assess the material and condition of your tank on arrival before choosing the method.
See our complete water tank cleaning services in Delhi NCR — pricing, process, tank types and full city coverage.
Beyond water tank cleaning, KaamGenie is rolling out a full lineup of home services across Delhi NCR — see our complete list of 12 home services we offer or will be launching through 2026. New to tank cleaning? Read our guide on how to pick the right water tank cleaning service in Delhi — what to look for, what to avoid, and the questions that separate trustworthy crews from quick-job operators.
Rooftop plastic tanks
₹699+ →Kothi sumps & underground tanks
₹1,499+ →Apartments & RWAs
Bulk pricing →FSSAI-compliant cleaning
₹2,500+ →टंकी साफ़ करने वाले
हिन्दी पढ़ें →View all water tank cleaning guides →
All pockets and lanes of New Friends Colony covered. If your specific block or society isn’t named in the sub-areas above, just call — we almost certainly cover it.
Same crew, same food-grade process, same-day where possible. Pick any locality below for local pricing and the tanks we typically find there.
Book a slot — we can usually fit you in today or tomorrow.