Water Demand & Tank Size Calculator
Water Demand & Tank Size Calculator — quick estimate
Estimate daily water demand and the underground & overhead tank capacity your building needs, on a per-capita basis (IS 1172). Adjust the inputs, then get an engineered plumbing design from our team.
Your building
Per-capita demand from IS 1172. Final tank sizing also considers fire-water reserve, flushing split and municipal / DISCOM norms.
Get an engineered plumbing design — free
Our public-health engineers will size tanks, pumps and the distribution network for your building. We'll attach the estimate above automatically.
Your request is in
Thanks! Our plumbing team will send your tailored water & tank design within one business day.
Indicative estimates only — not a binding design. Actual demand depends on occupancy pattern, fixtures, fire reserve and local bye-laws.
Need an exact BOQ, rate analysis or measurement sheet?
This is a quick engineering estimate. For tendering, billing or audit, our QS & estimation team prepares an item-wise BOQ, rate analysis and a verified measurement sheet to IS / CPWD norms — backed by 15+ years and ISO 9001:2015 quality processes.