Plastic vs Concrete Tank Cleaning
Raj Babbar · 8 min read
Home › Water Tank Cleaning › South Delhi › Navjeevan Vihar
Navjeevan Vihar — a small, quiet colony of large independent homes off Aurobindo Marg, long favoured by doctors and professors. Most houses run a proper sump-and-twin-tank system that deserves a proper annual clean. Tanks from ₹699, sumps ₹1,499.
Navjeevan Vihar homes are built the right way: an underground sump collecting the DJB supply, a booster pump, and a pair of rooftop tanks feeding the floors. The owners here are meticulous about their RO systems — many are AIIMS and university families — but the sump and the roof tanks upstream of that RO often go three or four years untouched. The RO membrane then quietly does the job the tank clean should have done, and dies early for it.
The pattern we find on these roofs is twin tanks ageing unevenly — the primary tank cycling daily stays relatively clear while the standby tank holds still water for weeks and grows a biofilm ring. Cleaning both, plus the sump, in one scheduled visit resets the whole chain.
For a standard 1000-litre overhead tank, the whole job takes about 90 minutes from doorbell to pack-up. Underground sumps take longer — usually 2 to 2.5 hours depending on sludge. You don’t need to provide anything: we bring our own water for the rinse, vacuums, jet pumps, food-grade disinfectant and gloves, and send before/after photos on WhatsApp.
In Navjeevan Vihar it rarely makes sense to clean only the roof tanks, because the sump refills them — a silted sump reseeds clean tanks within weeks. Our standard visit here is the full chain: underground sump at ₹1,499, then each rooftop tank at ₹699 up to 500L or ₹899 for 501–1,000L, all drained, sludge-vacuumed, scrubbed, jet-washed and disinfected in sequence so the house is back on clean water the same afternoon.
Most Navjeevan Vihar houses run two rooftop tanks, and the second one is where trouble hides. Water sits in the standby tank for long stretches, warming through summer, and a biofilm ring forms at the waterline that a quick rinse never removes. We scrub both tanks to bare plastic, check the interconnecting valves and floats, and leave you a simple rotation suggestion so neither tank holds stagnant water between our visits. Most families here settle into a once-a-year scheduled clean, and we send a reminder when it is due.
“What does a full sump-plus-two-tanks clean cost in Navjeevan Vihar?” The sump is ₹1,499 and each rooftop tank is ₹699 up to 500L or ₹899 for 501–1,000L — so a typical Navjeevan Vihar home with a sump and twin 1,000L tanks comes to ₹3,297, done in one visit of about three hours.
“We service our RO regularly. Do the tanks still need cleaning?” Yes — the RO only treats the kitchen tap. Bathing, brushing and cooking water comes straight from the tank, and a dirty tank also clogs the RO membrane faster. A clean tank upstream is why several AIIMS-doctor households here keep an annual slot with us.
“Can you do the job while we are at work?” Yes, if someone can give the crew roof and sump access. We photograph every stage — before, sludge out, after disinfection — and send the set on WhatsApp, so you can verify the work without standing over it.
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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 →
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