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Why it's worth doing

Benefits of Regular Water Tank Cleaning

Most people only think about their tank when the water smells. Here's what regular cleaning actually does for your health, your appliances and your wallet.

CHKACHK team3 min read

1. Safer water for everyday use

Stored water loses its residual chlorine over time, especially in warm tanks, and bacteria multiply in the biofilm on tank walls. Regular cleaning and disinfection removes that biofilm and the sludge that feeds it. Even if you drink RO water, you bathe, brush your teeth, wash vegetables and rinse utensils with tank water.

2. Better taste, smell and clarity

Musty, earthy or sulphur smells usually come from decaying organic matter in sludge. Cloudiness comes from fine sediment stirred up whenever the tank fills. A properly de-sludged tank fixes both at the source.

3. Longer life for your RO purifier

Sediment and biofilm fragments clog RO pre-filters and foul membranes. Households often notice that filters last longer after the tank is cleaned.

4. Fewer plumbing problems

Sediment settles in pipe bends, clogs tap aerators and shower heads, and collects at the bottom of geysers, reducing efficiency. Cleaner tanks mean less of it reaching your plumbing.

5. Protection against mosquitoes and pests

Tanks with gaps in the lid or open overflow pipes can become mosquito breeding sites. During cleaning, a professional team checks lids, covers and overflow pipes and points out problems — useful during Delhi's dengue season.

6. Early warning of tank damage

Cracks in a sump, seepage, a broken manhole cover or an ageing plastic tank are easy to miss. Regular cleaning means someone inspects the inside of your tank at least twice a year.

7. Peace of mind — with proof

Before-and-after photos show you the state of a tank you'd otherwise never see. For landlords, RWAs, schools and businesses, they're also a record you can share.

How often to get these benefits

Every six months for most homes; every three to four months for tanker- or borewell-fed buildings, PGs, clinics and food businesses. See how often to clean your water tank.

Is it worth the cost?

A 1,000-litre rooftop tank costs ₹599 to clean professionally; a typical sump ₹1,099. Cleaning both together earns a 10% discount. Compared with replacing RO filters early, descaling a geyser or calling a plumber for clogged lines, regular cleaning is one of the cheaper ways to look after a home. See our price list.

Benefits you can see

Beyond health, regular cleaning shows up around the house: fewer clogged tap aerators and shower heads, longer RO filter life, less sediment in the geyser and no musty smell in bathroom water. Before-and-after photos make the difference easy to see.

Frequently asked questions

What are the benefits of cleaning a water tank?
Safer and better-tasting water, longer RO filter and geyser life, fewer clogged taps and pipes, fewer mosquito breeding sites, and early detection of tank damage.
Do I need tank cleaning if I have an RO?
Yes. Most household water isn't filtered, and a dirty tank shortens RO filter life.
Will cleaning improve water pressure?
It can — sludge and debris blocking the outlet or tap filters are removed, which often improves flow.
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