San Carlos High School
PWS ID: 090400701 · San Carlos, 09 85550
Population Served
626
Total Violations
208
Health-Based Violations
5
Water Source
Groundwater
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Local
- Connections
- 9
- School/Daycare
- Yes
- MCL Violations
- 5
- Monitoring Violations
- 174
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 49 | 2010 |
| Nitrate | MR | 10 | 2022 |
| Chlorine | MR | 8 | 2024 |
| Total Haloacetic Acids (HAA5) | MR | 8 | 2024 |
| TTHM | MR | 8 | 2024 |
| Coliform (TCR) | MCL | 5 | 2013 |
| Lead and Copper Rule | MR | 5 | 2010 |
| Arsenic | MR | 3 | 2020 |
| Revised Total Coliform Rule | MON | 3 | 2024 |
| Public Notice | Other | 3 | 2024 |
| Cadmium | MR | 2 | 2001 |
| Chromium | MR | 2 | 2001 |
| CYANIDE | MR | 2 | 2001 |
| Selenium | MR | 2 | 2001 |
| Endrin | MR | 2 | 2001 |
| BHC-GAMMA | MR | 2 | 2001 |
| Methoxychlor | MR | 2 | 2001 |
| Dalapon | MR | 2 | 2001 |
| Toxaphene | MR | 2 | 2001 |
| Thallium, Total | MR | 2 | 2001 |
| Asbestos | MR | 2 | 2001 |
| Antimony, Total | MR | 2 | 2001 |
| Beryllium, Total | MR | 2 | 2001 |
| Mercury | MR | 2 | 2001 |
| Fluoride | MR | 2 | 2001 |
| Barium | MR | 2 | 2001 |
| Glyphosate | MR | 1 | 2001 |
| Di(2-ethylhexyl) phthalate | MR | 1 | 2001 |
| Picloram | MR | 1 | 2001 |
| Dinoseb | MR | 1 | 2001 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.