TYGH VALLEY WATER DISTRICT
PWS ID: OR4100912 · TYGH VALLEY, Oregon 97063
Population Served
218
Total Violations
120
Health-Based Violations
8
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 109
- County
- Wasco
- School/Daycare
- No
- MCL Violations
- 8
- Monitoring Violations
- 102
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 11 | 2013 |
| Lead and Copper Rule | MR | 9 | 2021 |
| Nitrate | MR | 8 | 2024 |
| Coliform (TCR) | MCL | 5 | 2007 |
| Revised Total Coliform Rule | MON | 3 | 2020 |
| Revised Total Coliform Rule | MCL | 3 | 2018 |
| Arsenic | MR | 2 | 2002 |
| E. COLI | MR | 2 | 2024 |
| Heptachlor | MR | 2 | 2020 |
| Combined Radium (-226 and -228) | MR | 2 | 2008 |
| Chromium | MR | 1 | 1996 |
| Mercury | MR | 1 | 1996 |
| Antimony, Total | MR | 1 | 1996 |
| CYANIDE | MR | 1 | 1996 |
| Selenium | MR | 1 | 1996 |
| Nickel | MR | 1 | 1996 |
| Fluoride | MR | 1 | 1996 |
| Xylenes, Total | MR | 1 | 2002 |
| DICHLOROMETHANE | MR | 1 | 2002 |
| p-Dichlorobenzene | MR | 1 | 2002 |
| Vinyl chloride | MR | 1 | 2002 |
| 1,1-Dichloroethylene | MR | 1 | 2002 |
| Ethylbenzene | MR | 1 | 2002 |
| Styrene | MR | 1 | 2002 |
| Methoxychlor | MR | 1 | 2002 |
| Dalapon | MR | 1 | 2002 |
| Diquat | MR | 1 | 2002 |
| Endothall | MR | 1 | 2002 |
| Glyphosate | MR | 1 | 2002 |
| Di(2-ethylhexyl) adipate | MR | 1 | 2002 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.