JO COMBS ELEMENTARY SCHOOL
PWS ID: AZ0411045 · SAN TAN VALLEY, Arizona 85140
Population Served
325
Total Violations
205
Health-Based Violations
9
Water Source
Groundwater
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Local
- Connections
- 1
- County
- Pinal
- School/Daycare
- Yes
- MCL Violations
- 6
- Monitoring Violations
- 167
- Treatment Tech Violations
- 3
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Chlorine | MR | 55 | 2024 |
| Coliform (TCR) | MR | 44 | 2014 |
| Lead and Copper Rule | MR | 11 | 2024 |
| Total Haloacetic Acids (HAA5) | MR | 9 | 2016 |
| TTHM | MR | 9 | 2016 |
| Nitrate | MR | 7 | 2006 |
| Coliform (TCR) | MCL | 6 | 2015 |
| LEAD AND COPPER RULE REVISIONS | RPT | 3 | 2024 |
| LEAD AND COPPER RULE REVISIONS | TT | 3 | 2024 |
| Revised Total Coliform Rule | RPT | 2 | 2019 |
| E. COLI | MR | 2 | 2015 |
| Chromium | MR | 1 | 1993 |
| Selenium | MR | 1 | 1993 |
| DICHLOROMETHANE | MR | 1 | 1999 |
| o-Dichlorobenzene | MR | 1 | 1999 |
| p-Dichlorobenzene | MR | 1 | 1999 |
| 1,1-Dichloroethylene | MR | 1 | 1999 |
| 1,2-Dichloroethane | MR | 1 | 1999 |
| 1,1,1-Trichloroethane | MR | 1 | 1999 |
| Carbon tetrachloride | MR | 1 | 1999 |
| 1,2-Dichloropropane | MR | 1 | 1999 |
| 1,1,2-Trichloroethane | MR | 1 | 1999 |
| Tetrachloroethylene | MR | 1 | 1999 |
| Benzene | MR | 1 | 1999 |
| Ethylbenzene | MR | 1 | 1999 |
| Glyphosate | MR | 1 | 1999 |
| Barium | MR | 1 | 1993 |
| Public Notice | Other | 1 | 2024 |
| Fluoride | MR | 1 | 1993 |
| Xylenes, Total | MR | 1 | 1999 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.