Smooth walls, easy clean
Plastic’s non-porous surface gives biofilm nothing to grip, so it scrubs out fast — usually every 6 months is fine.
KaamGenieSintex or concrete?
Which tank actually needs cleaning more often in Delhi.
Plastic
Concrete
Porous walls hold grime
Concrete’s rough surface traps biofilm and silt, so it needs cleaning more often — every 4–5 months, sooner for sumps.
The catch
Concrete takes longer
Same size, more work — longer scrubbing, a second jet-wash pass and 25–30 minutes of disinfectant contact time.
Lifespan
Plastic 15–20, concrete 30–50
Concrete lasts far longer but the porous walls foul faster; plastic is easy to swap when Delhi summers finally wear it out.
Best of both
Many homes run both
Concrete sump below, plastic tank on top is the Delhi default — we clean all four combinations with the right protocol.
Book now
Tank cleaning from ₹699
Tell us plastic or concrete on the call — fixed price, same-day across Delhi, before & after photos.