NORTHWESTERN LANCASTER CO AUTH
PWS ID: PA7360164 · MANHEIM, Pennsylvania 17545
Population Served
2,968
Total Violations
166
Health-Based Violations
35
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 844
- County
- Lancaster
- School/Daycare
- No
- MCL Violations
- 35
- Monitoring Violations
- 105
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Nitrate | MCL | 33 | 2011 |
| Public Notice | Other | 23 | 2018 |
| TTHM | MR | 16 | 2025 |
| Nitrate | MR | 14 | 2011 |
| Surface Water Treatment Rule | MR | 8 | 2017 |
| Atrazine | MR | 7 | 2009 |
| Total Haloacetic Acids (HAA5) | MR | 5 | 2016 |
| Lead and Copper Rule | MR | 3 | 2005 |
| Stage 2 Disinfectants and Disinfection Byproducts Rule | MR | 2 | 2008 |
| Coliform (TCR) | MCL | 2 | 1991 |
| Arsenic | MR | 2 | 1994 |
| Cadmium | MR | 2 | 1994 |
| Fluoride | MR | 2 | 1994 |
| Nickel | MR | 2 | 1994 |
| Thallium, Total | MR | 2 | 1994 |
| CYANIDE | MR | 2 | 1994 |
| Barium | MR | 2 | 1994 |
| Selenium | MR | 2 | 1994 |
| Chromium | MR | 2 | 1994 |
| Antimony, Total | MR | 2 | 1994 |
| Beryllium, Total | MR | 2 | 1994 |
| Mercury | MR | 2 | 1994 |
| Chlorine | MR | 1 | 2006 |
| cis-1,2-Dichloroethylene | MR | 1 | 1994 |
| Xylenes, Total | MR | 1 | 1994 |
| DICHLOROMETHANE | MR | 1 | 1994 |
| o-Dichlorobenzene | MR | 1 | 1994 |
| p-Dichlorobenzene | MR | 1 | 1994 |
| 1,1-Dichloroethylene | MR | 1 | 1994 |
| 1,2-Dichloroethane | MR | 1 | 1994 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.