Which Chemicals Are Used for Tank Cleaning?
Raj Babbar · 11 min read
Home › Water Tank Cleaning › Sintex / Plastic Tank Cleaning › Dwarka Sector 2
Sintex & plastic tank cleaning in Dwarka Sector 2 — algae and biofilm soft-washed out of MIG, SFS and CGHS tanks. From ₹699.
Dwarka Sector 2 is a quiet, mostly residential sector built around DDA MIG and SFS flats with a cluster of late-1990s CGHS societies. The DDA blocks depend on rooftop Sintex and plastic overhead tanks, while the CGHS towers run an overhead-plus-underground-sump setup. Sitting in the open, those rooftop plastic tanks catch full sun through the day. Sunlight through the translucent walls plus warm stored water is the perfect recipe for algae and a slippery biofilm.
When a Sector 2 tank starts smelling earthy or the water feels slimy, it is the biofilm on the plastic walls, not the pipes. Our team drains the tank, scoops the sediment, then soft-jets and hand-scrubs the algae off with soft pads before disinfecting to food-grade standard. See how our water tank cleaning in Dwarka Sector 2 handles both rooftop tanks on DDA blocks and the sump-plus-overhead systems in the CGHS societies. Every job ends with a reseated lid, an overflow check, photos and a certificate.
In Sector 2 the trouble starts with the translucent plastic itself. Light passing through a Sintex wall lets algae photosynthesise inside the tank, and on a shadeless MIG or SFS rooftop the tank warms up enough to speed that growth all summer. CGHS towers add a second problem: an underground sump stays dark but often goes long stretches between cleans, so a slimy biofilm and settled sludge quietly build on the base. Together the overhead and the sump can keep re-seeding each other if only one is cleaned.
The fix is a two-surface, plastic-safe clean. We empty the tank, scoop the slimy sediment, then run a soft jet wash at a pressure that will not crack or gouge the plastic. Algae and biofilm are worked off with soft scrub pads rather than wire, then a food-grade disinfectant kills what remains. For CGHS homes we clean both the overhead tank and the sump in the same visit so neither reinfects the other, and we reseat lids to block light and dust.
No travel charge anywhere in Dwarka Sector 2. 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 Dwarka Sector 2 — and there’s no travel charge to any of them:
“The water in my Sector 2 flat smells slimy – what is wrong?” That earthy, slimy smell is biofilm coating the inside of your Sintex tank, common in Sector 2’s MIG and SFS blocks where rooftop tanks sit in full sun. Light through the translucent walls feeds algae, and the film gives off that stale odour as it thickens. Draining alone will not remove it; the walls need a proper soft-pad scrub. After our clean and food-grade disinfectant the smell goes and the water tastes fresh again.
“Is soft jet washing safe for an older CGHS society tank?” Yes. We deliberately keep the pressure at a plastic-safe level so even older, sun-aged Sintex tanks in Sector 2’s CGHS societies are not cracked or gouged. Wire brushes are never used — only soft pads that lift algae without scratching the surface. For societies with both an overhead tank and an underground sump we clean each with the right method. The result is a thorough clean with zero damage to the tank body.
“How much for a 1000L Sintex tank clean in Sector 2?” A single 1000L Sintex or plastic tank starts at ₹699, including draining, sediment scooping, soft jet wash, algae scrubbing, disinfection, photos and a certificate. CGHS homes that have both a rooftop overhead tank and an underground sump pay a little more because that is two tanks of work. We give you the exact price for your setup before starting. Most DDA MIG and SFS flats fall in the standard band.
“Why do I see dark particles when the tank level drops?” Dark particles are usually old biofilm flakes and settled sludge that gather at the bottom of the tank between cleans, which is common in sumps that are opened only rarely. When the water gets low, that layer is disturbed and reaches your taps. We scoop out all the sediment, soft-wash the base and disinfect so there is nothing left to shed. Clear water typically returns within a fill cycle.
“Can you do both the sump and overhead tank the same day in a Sector 2 CGHS society?” Yes. For CGHS societies in Sector 2 we clean the underground sump and the rooftop overhead tank in the same visit, which stops one from reinfecting the other. Same-day booking is usually possible if you call early. A combined sump-plus-overhead clean takes longer than a single tank, so we plan the slot accordingly. You get photos and a certificate for both once we finish.
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 Dwarka Sector 2 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.