Overhead vs Underground Tank Cleaning
Raj Babbar · 9 min read
Home › Water Tank Cleaning › Sintex / Plastic Tank Cleaning › Okhla Phase 1
In Okhla Phase 1, the large plastic and Sintex tanks feeding factory canteens and offices are used hard and slime up fast. We clean them gently, food-grade and documented. From ₹699.
Okhla Industrial Area Phase 1 is a working district of factories, workshops and offices. Storage runs to large commercial and industrial overhead tanks and big underground reservoirs feeding production units and canteens. Many of the overhead tanks are plastic or Sintex, fitted quickly and cheaply on unit rooftops to hold canteen and washroom water. Because these tanks serve staff rather than a household, cleaning is easily deferred until the water visibly suffers — and a deferred plastic tank in the sun is where algae quietly build up.
Supply here mixes borewell with DJB, and the borewell water leaves scale on plastic while sediment keeps moving through busy tanks. If a unit also needs its large underground reservoir cleaned or the whole premises handled, our full water tank cleaning in Okhla Phase 1 page covers it. This page is specifically about Sintex and plastic tanks — the overhead tanks feeding canteens and washrooms that go green and slimy soonest.
A plastic overhead tank on an Okhla Phase 1 unit sits in open sun on the roof, and light through its walls is exactly what green algae feed on. Where the tank feeds a canteen, the water is warm and often refilled through the working day. A concrete tank would stay dark and cool and slow a bloom, but Sintex and plastic light up and warm through. For canteen and washroom water especially, that means a green film and biofilm can form quickly, well before anyone opens the lid to check.
The borewell supply is the second driver. Okhla groundwater is mineral-heavy, and that mineral settles as a rough scale on the plastic floor and around the outlet, where slime clings. Industrial dust and grit blow in through lids that rarely seal on unit roofs. With the tank drawn down and refilled through each shift, sediment is stirred but never cleared. For water used in a canteen, that build-up is a hygiene concern, which is why a full drain and scrub matters here.
No travel charge anywhere in Okhla Phase 1. 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 Okhla Phase 1 — and there’s no travel charge to any of them:
“Do you clean Sintex tanks for units near Modi Mill in Okhla Phase 1?” Yes. We clean plastic and Sintex tanks for factories, workshops and offices across Okhla Phase 1, including the blocks near Modi Mill, CRRI and towards Sukhdev Vihar. Whether it is a canteen supply tank or a washroom overhead tank, we plan a slot around your shifts and clean it thoroughly.
“What does it cost to clean a 500 to 1000 litre Sintex tank here?” A plastic tank up to 500 litres starts at ₹699 and a 1000 litre Sintex tank is ₹899, covering draining, slime and sediment removal, a plastic-safe wash, hand-scrubbing and a food-grade sanitiser. Larger industrial tanks are quoted by capacity, with a bulk discount when several tanks on one premises are done in a single visit.
“Can you clean my plastic tank the same day I call?” Often yes. Okhla Phase 1 is on our regular industrial-area route, so same-day or next-day visits are usually possible. A single Sintex tank takes about ninety minutes; for a unit with several tanks we agree a slot that does not disrupt your canteen or production, and confirm the timing when you call.
“Why does my Sintex tank in Okhla Phase 1 go slimy so quickly?” Okhla Phase 1 overhead tanks are mostly plastic, so their walls let sunlight in to feed algae, and canteen tanks stay warm and refill through each shift. Deferred cleaning gives any bloom time to spread. The moving water only feeds the film rather than cleaning the walls, so it returns unless the tank is properly scrubbed and disinfected.
“Is pressure washing safe for a plastic tank, and how do you remove algae without scratching it?” It is safe because we set the jet wash to a pressure meant for plastic, so even large Sintex tanks are not cracked. Algae and scale come off with soft pads and plastic-safe methods, never wire brushes, which scratch the surface and let biofilm return. A food-grade sanitiser then clears the spores, important for canteen and washroom water.
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 Okhla Phase 1 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.