Water Tank Disinfection Explained
Raj Babbar · 10 min read
Home › Water Tank Cleaning › Sintex / Plastic Tank Cleaning › Kailash Nagar
Is it worth cleaning an old Sintex, or should we just replace it? That is the question we hear most in Kailash Nagar, where many tanks are ageing and the plastic has roughened. In most cases a proper clean brings the tank back. KaamGenie cleans rooftop Sintex tanks in the Gandhi Nagar belt from ₹699.
The honest answer is that most ageing Sintex tanks here are still worth cleaning, not replacing. Kailash Nagar sits in the Gandhi Nagar belt near the Yamuna bridge, an area of older plot houses where a lot of the plastic tanks are well past their easy years. Time and sun roughen the inside of the plastic, and once the walls lose their smoothness they grip algae and sediment far more readily than a new tank does. The supply is a moderate DJB, so the water itself is not the harshest, but owners here tend to clean only now and then, which lets the roughened walls coat up. Unless a tank is actually cracked through, a thorough scrub usually gets it back to clean and usable.
This page focuses on plastic Sintex and rooftop plastic tanks, especially the ageing, roughened ones common in these older houses. Our crew drains the tank, works the rough walls and base with soft pads and an anti-bacterial disinfectant wash, and refills, without wire brushes that would tear at tired plastic. If you also have an underground sump or a masonry tank, the wider water tank cleaning in Kailash Nagar covers those too. A single call books the visit and a standard tank is usually done inside an hour.
Tank age is the main reason these need attention. An older Sintex has walls that sun and years have roughened, and rough plastic grips algae, biofilm and sediment in a way smooth new plastic does not, so buildup takes hold faster and clings harder. Because the walls are also translucent, sunlight still reaches the water and feeds a green film along those rough patches. Cleaning an ageing tank well takes a careful scrub, but it restores the surface enough that the water runs clean and the tank keeps serving for years more.
Irregular cleaning is the other half of it. Owners in these older houses often clean only when the water visibly changes, so an ageing tank can sit for a long time between washes while the roughened walls quietly coat over. The moderate DJB supply is gentler than borewell, but even it leaves a film on a neglected plastic tank left in the sun. We clean plastic-safe, jet pressure kept low for older, thinner walls and soft pads rather than wire brushes, so a tired tank is cleaned thoroughly without being cracked or worn through.
No travel charge anywhere in Kailash Nagar. 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 Kailash Nagar — 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 Kailash Nagar’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 →
“Our Sintex is old and rough inside. Is it worth cleaning or should we replace it?” In most cases cleaning is enough. Unless the tank is actually cracked or leaking, a thorough scrub clears the algae and sediment from the roughened walls and brings it back to usable. We will tell you honestly if a tank is too far gone to be worth cleaning.
“Will jet-washing crack an old, tired plastic tank?” No. For ageing tanks we keep the jet pressure low and use soft pads, never wire brushes, precisely because the older plastic is thinner and more brittle. The method is chosen to clean the tank without stressing worn walls.
“Why does an old tank get dirty faster than a new one?” Years of sun roughen the inside of the plastic, and rough walls grip algae and sediment far more than smooth new plastic does. So an ageing tank coats up quicker and needs a slightly more frequent clean. A good scrub still restores the surface each time.
“We only clean when the water changes colour. How often should we really do it?” Waiting for a visible change usually means the tank has been dirty for weeks. For an older roughened tank we suggest every four to six months so it never gets that far. Regular cleaning is also gentler on an ageing tank than letting heavy buildup set in.
“What will it cost for our rooftop Sintex?” From ₹699 for up to 500 litres, about ₹899 for 1000 litres, and ₹1,299 to ₹1,499 for 1500 to 2000 litre tanks. If several houses on the lane book together we can offer a better combined rate.
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 Kailash Nagar 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.