Dripping Faucet Water Waste Calculator
Reviewed by Hamza Gujjar, Algorithm Architect & Software Developer
Last updated: July 27, 2026Dripping Faucet Water Waste Calculator
That "small" drip adds up more than most people expect - this calculator quantifies exactly how much water a leaking faucet wastes.
Daily Waste (gal) = (Drips Per Minute x 1440 min/day x 0.3 ml/drip) / 3785.41 ml/gal
Example
A faucet dripping at 60 drips per minute (roughly 1 drip per second):
Daily Waste = 6.85 gallons/day → ~2,499 gallons/year
Why "Just a Drip" Isn't Trivial
A single drip is commonly estimated at about 0.3ml - seemingly negligible on its own, but a steady leak at one drip per second adds up to well over 2,000 gallons wasted per year, which is why the EPA specifically highlights faucet leaks as a common, easily fixable source of avoidable household water waste.
Most Drips Are a Cheap, Quick Fix
A dripping faucet is very often caused by a worn rubber washer or O-ring, a low-cost part that's straightforward to replace - given how much water even a minor drip wastes annually, fixing it promptly usually pays for itself quickly.