DIAMOND LAKE WATER & SEWER DISTRICT
PWS ID: WA5319207 · Newport, Washington 99156
Population Served
1,299
Total Violations
83
Health-Based Violations
6
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 650
- County
- Pend Oreille
- School/Daycare
- No
- MCL Violations
- 6
- Monitoring Violations
- 71
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Consumer Confidence Rule | Other | 6 | 2018 |
| Coliform (TCR) | MCL | 6 | 1992 |
| Nitrate | MR | 3 | 2024 |
| Endrin | MR | 2 | 2002 |
| BHC-GAMMA | MR | 2 | 2002 |
| Methoxychlor | MR | 2 | 2002 |
| Di(2-ethylhexyl) adipate | MR | 2 | 2002 |
| Di(2-ethylhexyl) phthalate | MR | 2 | 2002 |
| Hexachlorocyclopentadiene | MR | 2 | 2002 |
| Atrazine | MR | 2 | 2002 |
| Heptachlor | MR | 2 | 2002 |
| HEXACHLOROBENZENE | MR | 2 | 2002 |
| Chlordane | MR | 2 | 2002 |
| Heptachlor epoxide | MR | 2 | 2002 |
| Pentachlorophenol | MR | 2 | 2002 |
| Coliform (TCR) | MR | 2 | 1992 |
| Benzo(a)pyrene | MR | 2 | 2002 |
| Simazine | MR | 2 | 2002 |
| LASSO | MR | 2 | 2002 |
| Toxaphene | MR | 2 | 2002 |
| 1,2,4-Trichlorobenzene | MR | 1 | 2008 |
| cis-1,2-Dichloroethylene | MR | 1 | 2008 |
| DICHLOROMETHANE | MR | 1 | 2008 |
| o-Dichlorobenzene | MR | 1 | 2008 |
| Vinyl chloride | MR | 1 | 2008 |
| 1,1-Dichloroethylene | MR | 1 | 2008 |
| trans-1,2-Dichloroethylene | MR | 1 | 2008 |
| 1,1,1-Trichloroethane | MR | 1 | 2008 |
| Trichloroethylene | MR | 1 | 2008 |
| Tetrachloroethylene | MR | 1 | 2008 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.