La Posta Upper
PWS ID: 090605146 · Boulevard, 09 91905
Population Served
73
Total Violations
126
Health-Based Violations
5
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Native American
- Connections
- 15
- School/Daycare
- No
- MCL Violations
- 5
- Monitoring Violations
- 84
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 8 | 2009 |
| Nitrate | MCL | 4 | 2023 |
| Nitrate | MR | 2 | 2021 |
| Toxaphene | MR | 2 | 2004 |
| Dalapon | MR | 2 | 2004 |
| Diquat | MR | 2 | 2004 |
| Gross Alpha, Excl. Radon and U | MR | 2 | 2025 |
| 1,2,4-Trichlorobenzene | MR | 2 | 2004 |
| Arsenic | MR | 1 | 2004 |
| Barium | MR | 1 | 2004 |
| Cadmium | MR | 1 | 2004 |
| CYANIDE | MR | 1 | 2004 |
| Fluoride | MR | 1 | 2004 |
| Mercury | MR | 1 | 2004 |
| Endrin | MR | 1 | 2004 |
| Selenium | MR | 1 | 2004 |
| Beryllium, Total | MR | 1 | 2004 |
| Thallium, Total | MR | 1 | 2004 |
| Asbestos | MR | 1 | 2004 |
| Endothall | MR | 1 | 2004 |
| Glyphosate | MR | 1 | 2004 |
| Di(2-ethylhexyl) adipate | MR | 1 | 2004 |
| OXAMYL | MR | 1 | 2004 |
| Picloram | MR | 1 | 2004 |
| Dinoseb | MR | 1 | 2004 |
| Carbofuran | MR | 1 | 2004 |
| 2,3,7,8-TCDD | MR | 1 | 2004 |
| Heptachlor | MR | 1 | 2004 |
| Heptachlor epoxide | MR | 1 | 2004 |
| 2,4-D | MR | 1 | 2004 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.