We empty, scrub, rinse, and refill. Underground tanks and pumping setups need a look first — a 500 gallon roof plastic is a different job from a basement cement tank in an old G-sector house.
This is listed on coolplanet.pk beside the AC bench because the same households book it. It is not a chemical-plant service.
Questions we get on this job
Do you use chemicals?
Cleaning agents suitable for drinking-water tanks, then a thorough rinse. Ask if you want water-only mechanical cleaning.
Need to stay without water?
For a few hours. We say how long once we see the tank size.
Offices?
Yes — often with the commercial AC visit if the roof is already open.