D21/100
WESTERN ALLEGHENY COUNTY MUN A — Water Quality Report 2026
Serving 19,031 people · Pennsylvania
Water Source
Purchased Surface Water
County
—
System ID
PA5020034
Violations
37
Contaminant Test Results
3 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
PFOS | 0.005 µg/L | 0.004 µg/L | Over Limit |
chlorate | 410.00 µg/L | — | Above Goal |
Lead (90th percentile) | < 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
6
Violations (last 5yr)
0
Unresolved
2
Health-Related
TIER 3Resolved
Disinfection byproduct treatment technique failure
When: October 18, 2025 – November 13, 2025Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Monitoring violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: September 7, 2025 – November 13, 2025Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 2Resolved
Maximum contaminant level violation
When: September 7, 2025 – November 13, 2025Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Disinfection byproduct treatment technique failure
When: September 24, 2024 – October 25, 2024Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Monitoring violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: August 20, 2024 – October 25, 2024Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 2Resolved
Treatment technique violation
When: August 20, 2024 – October 25, 2024Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About WESTERN ALLEGHENY COUNTY MUN A
Is WESTERN ALLEGHENY COUNTY MUN A water safe to drink?
WESTERN ALLEGHENY COUNTY MUN A water receives a grade of D (21/100), which is considered poor. 1 contaminant(s) exceed EPA legal limits and 37 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has WESTERN ALLEGHENY COUNTY MUN A detected?
69 contaminants were tested in WESTERN ALLEGHENY COUNTY MUN A's water. Notable contaminants include PFOS, Lead (90th percentile), chlorate. 1 exceed EPA legal limits (MCLs). 3 exceed EPA health goals (MCLGs).
Does WESTERN ALLEGHENY COUNTY MUN A have any EPA violations?
Yes, WESTERN ALLEGHENY COUNTY MUN A has 37 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, RPT, TT. 7 are health-based violations.
How many people does WESTERN ALLEGHENY COUNTY MUN A serve?
WESTERN ALLEGHENY COUNTY MUN A serves approximately 19,031 people, Pennsylvania.
What type of water does WESTERN ALLEGHENY COUNTY MUN A provide?
WESTERN ALLEGHENY COUNTY MUN A sources its water from purchased surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is PA5020034.
How does WESTERN ALLEGHENY COUNTY MUN A compare to other utilities in Pennsylvania?
WESTERN ALLEGHENY COUNTY MUN A scores 21/100 with a grade of D (poor). This score suggests significant water quality concerns relative to other utilities. Visit our Pennsylvania state page for a full comparison of water systems.