These water systems have the highest measured lead concentrations. The EPA action level is 15 ppb. Systems shown may require additional treatment or infrastructure improvements.
N/A ppb
Highest Lead Level
NaN ppb
Average (Top 25)
15 ppb
EPA Action Level
Lead exposure can cause serious health problems, especially for children and pregnant women. It affects brain development and can cause learning difficulties, behavioral problems, and reduced IQ.
If your water system appears on this list, consider using a certified lead-removal filter and having your tap water tested. Contact your water provider for more information about lead reduction programs.
| Rank | City & System | Lead (ppb) | Overall Score | Action |
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