Is Lead in your tap water?
Lead usually enters water from old pipes and solder, so it can be present even when the source water is clean. Enter your city to see what its public water record shows.
Not sure of your city? Browse all cities →
Compare a tap-test value with the action level
Use the result exactly as printed on your tap-test report, in µg/L (ppb). First-draw samples show the highest lead from your plumbing.
Read in your browser only. Nothing you type is saved or sent. µg/L equals parts per billion (ppb). The action level applies to a system’s 90th percentile, not one home.
From city to tap, in four steps
- Your city
Match the city to its published PurityMap report.
- System result
Read the 90th-percentile lead result from sampled homes.
- Your city
- Your pipes
Check your service line and plumbing age. The record cannot see them.
- Tap test
A certified first-draw test measures lead at your own tap.
- Your pipes
A public record is not a tap test.
Distribution conditions and household plumbing can differ from system sampling. When a household decision depends on the result, use a qualified laboratory and keep the reporting limit with the result.