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Home › Water Tank Cleaning › Sintex / Plastic Tank Cleaning › Nimri Colony (Ashok Vihar)
Nimri Colony's DDA blocks in Ashok Vihar share rooftop Sintex tanks across several flats, and the plastic greens fast with no clear caretaker. KaamGenie cleans it gently, hygienic and photographed. From ₹699.
Nimri Colony in Ashok Vihar is a planned DDA pocket of flats and independent floors laid out in orderly blocks. The overhead store on these ageing structures is often a shared Sintex or plastic tank feeding several flats, running on DJB supply. Because the plastic is translucent, rooftop sun passes through the wall and warms the water, letting algae and biofilm establish over time. Dust settling on the open block roof drifts into loosely lidded tanks and adds a gritty layer. As the DDA buildings age, sediment and scale slowly accumulate inside. A concrete tank would keep the light out, but the shared plastic one lets it in, so the inside greens up between long intervals. With no single flat owning the rooftop tank, its cleaning is repeatedly deferred.
We clean these shared block tanks gently and fully: check the body and lid, drain, hand-scoop the slimy sediment, wet-vacuum the base and jet-wash at a plastic-safe pressure. The algae film lifts with soft pads rather than wire brushes, and we finish with an anti-bacterial disinfectant wash and share before and after photos. If the block also has an underground sump or an RCC tank to do, see our full water tank cleaning in Nimri Colony. This page is specifically about Sintex and plastic tanks.
The shared plastic tank on a DDA block roof is exposed and translucent. Sun passes through the Sintex wall and warms the water, and that warmth is what algae and biofilm need to spread. A concrete tank blocks the light and stays cooler, so it holds up, while the plastic one greens. Because the tank serves several flats, it is filled and drawn all day, keeping the water warm and worked, which speeds the film along in the same DJB supply.
Ownership is the quiet problem in Nimri. A tank shared across flats has no single caretaker, so its cleaning is nobody's clear responsibility and slips for long stretches. Meanwhile roof dust keeps drifting in through loose lids, laying a gritty film on the plastic floor for the algae to grip, and the ageing DDA plumbing adds its own sediment. Left between long intervals, the plastic tank coats up well beyond what the residents expect, which is why a scheduled shared-tank clean is worth arranging for the block.
No travel charge anywhere in Nimri Colony (Ashok Vihar). 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 Nimri Colony (Ashok Vihar) — and there’s no travel charge to any of them:
Every locality in Delhi stores different water, and that decides how fast a tank fouls. This is Nimri Colony’s profile from The Delhi Water Index, built from our field observations across 250+ localities.
Indicative field characterisation, not a certified lab test. BIS IS 10500: TDS 500 mg/L acceptable, 2,000 permissible. Check any Delhi area →
“Do you clean the shared rooftop tank for a whole DDA block?” Yes. A single Sintex serving several Nimri flats is a common job for us, and we clean it on one visit for the block, checking the lid, draining, scooping the slimy layer and finishing with a disinfectant wash.
“No one flat owns the tank, can the block book together?” Yes, and it is the cheaper way. When flats share a rooftop tank, one resident can book on behalf of the block, and if there are several plastic tanks we give a bulk per-tank rate for the building.
“How much for a standard 1000-litre shared plastic tank?” A standard 1000L Sintex is ₹899, and a smaller tank up to 500 litres starts at ₹699. Tanks between 1000 and 2000L are ₹1,299 to ₹1,499, with a bulk per-tank rate for multiple tanks in the block.
“Why does the DDA block's plastic tank keep going green?” Because it is exposed on the roof and translucent, so sun warms the water and feeds algae, while shared use keeps it filling and draining all day. A concrete tank would stay cooler and clearer, but the plastic block tank greens between cleanings.
“How long does cleaning a shared block tank take?” A single shared plastic tank is usually done within the morning. We time the drain to the block's supply window so the tank refills before the flats need water, and we send photos of the clean interior afterwards.
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 Nimri Colony (Ashok Vihar) 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 6-step 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.