- EPA's UCMR 5 testing looked for 30 contaminants here and found 3.
- Lithium: found in 3 of 16 samples, average 1.79 µg/L, highest 9.69 µg/L (EPA UCMR 5 testing, Sep 2024–Jun 2025)
Public EPA test results
What EPA records show for Western Allegheny County Mun A
EPA PA5020034 · serves Allegheny County, PA · about 19,031 people (EPA SDWIS)
This report shows EPA's federal records for this water system: UCMR 5 testing, lead testing and violations. It isn't a test of the water at your tap, and it has no Water Score.
Public EPA test results
Western Allegheny County Mun A (EPA PA5020034)
What EPA records show for Western Allegheny County Mun A, as of October 14, 2026
2 health-based violations since July 1, 2021 in EPA records (EPA SDWIS).
Lead, 90th percentile: 0.95 ppb at the latest result in EPA records for a monitoring period that ran on or after July 1, 2021, at or below EPA's 15 ppb action level (EPA SDWIS, monitoring period Jun 1, 2025–Sep 30, 2025). The 90th percentile is a system-wide measure from homes sampled under EPA's lead rule; it isn't a result for your home.
EPA's UCMR 5 testing looked for 30 contaminants here and found 3.
Source: EPA records (SDWIS, UCMR 5). SDWIS: data as of Oct 14, 2026. EPA UCMR 5 data, samples through June 2026.
Your water bill names your utility.
Does Western Allegheny County Mun A use chloramine?
We didn't find chloramine in Western Allegheny County Mun A's EPA treatment records. That's not a complete list; your utility's annual water quality report says which disinfectant it uses.
What EPA records show for this system
Reported results in EPA records (data as of Oct 14–15, 2026)