NISQUALLY-LESCHI & WEST NISQUALLY
PWS ID: 105300014 · OLYMPIA, 10 98513
Population Served
3,200
Total Violations
694
Health-Based Violations
4
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Native American
- Connections
- 84
- School/Daycare
- No
- MCL Violations
- 3
- Monitoring Violations
- 669
- Treatment Tech Violations
- 1
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 61 | 2015 |
| Nitrate | MR | 19 | 2023 |
| Endothall | MR | 13 | 2016 |
| Gross Alpha, Excl. Radon and U | MR | 13 | 2020 |
| Chlorine | MR | 13 | 2024 |
| Glyphosate | MR | 13 | 2016 |
| Consumer Confidence Rule | Other | 13 | 2015 |
| 2,3,7,8-TCDD | MR | 12 | 2016 |
| 1,2-DIBROMO-3-CHLOROPROPANE | MR | 12 | 2016 |
| Methoxychlor | MR | 11 | 2016 |
| Toxaphene | MR | 11 | 2016 |
| Simazine | MR | 11 | 2016 |
| Atrazine | MR | 11 | 2016 |
| LASSO | MR | 11 | 2016 |
| Heptachlor | MR | 11 | 2016 |
| Total Polychlorinated Biphenyls (PCB) | MR | 11 | 2016 |
| ETHYLENE DIBROMIDE | MR | 11 | 2016 |
| BHC-GAMMA | MR | 11 | 2016 |
| Hexachlorocyclopentadiene | MR | 11 | 2016 |
| Benzo(a)pyrene | MR | 11 | 2016 |
| Di(2-ethylhexyl) adipate | MR | 11 | 2016 |
| HEXACHLOROBENZENE | MR | 11 | 2016 |
| Endrin | MR | 11 | 2016 |
| Chlordane | MR | 11 | 2016 |
| Diquat | MR | 11 | 2016 |
| Picloram | MR | 10 | 2016 |
| 2,4-D | MR | 10 | 2016 |
| Pentachlorophenol | MR | 10 | 2016 |
| Combined Radium (-226 and -228) | MR | 10 | 2020 |
| Dalapon | MR | 10 | 2016 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.