NYSSA, CITY OF
PWS ID: OR4100579 · NYSSA, Oregon 97913
Population Served
3,285
Total Violations
194
Health-Based Violations
141
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 1,126
- County
- Malheur
- School/Daycare
- No
- MCL Violations
- 141
- Monitoring Violations
- 34
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Arsenic | MCL | 131 | 2018 |
| Coliform (TCR) | MR | 18 | 2009 |
| Public Notice | Other | 13 | 2018 |
| Coliform (TCR) | MCL | 10 | 2007 |
| Nitrate | MR | 4 | 2019 |
| Arsenic | MR | 3 | 2019 |
| Consumer Confidence Rule | Other | 3 | 2024 |
| Revised Total Coliform Rule | MON | 2 | 2025 |
| Nitrite | MR | 1 | 1996 |
| Lead and Copper Rule | MR | 1 | 1994 |
| COLIPHAGE | MR | 1 | 2017 |
| Combined Radium (-226 and -228) | MR | 1 | 1976 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 1976 |
| Total Haloacetic Acids (HAA5) | MR | 1 | 2022 |
| TTHM | MR | 1 | 2022 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.