BLACKLICK VALLEY MUNI AUTH
PWS ID: PA4110077 · TWIN ROCKS, Pennsylvania 15960
Population Served
1,650
Total Violations
174
Health-Based Violations
101
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 763
- County
- Cambria
- School/Daycare
- No
- MCL Violations
- 96
- Monitoring Violations
- 26
- Treatment Tech Violations
- 5
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| TTHM | MCL | 53 | 2011 |
| Total Haloacetic Acids (HAA5) | MCL | 43 | 2020 |
| Public Notice | Other | 40 | 2025 |
| Coliform (TCR) | MR | 10 | 2007 |
| Revised Total Coliform Rule | MON | 7 | 2024 |
| Revised Total Coliform Rule | RPT | 5 | 2018 |
| Surface Water Treatment Rule | TT | 5 | 2025 |
| TTHM | MR | 4 | 2005 |
| Surface Water Treatment Rule | MR | 3 | 2005 |
| Consumer Confidence Rule | Other | 2 | 2001 |
| Chlorine | MR | 2 | 2005 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.