NORTHERN SECTION 4 COOP
PWS ID: AZ0411201 · APACHE JUNCTION, Arizona 85119
Population Served
48
Total Violations
348
Health-Based Violations
11
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Public/Private
- Connections
- 18
- County
- Pinal
- School/Daycare
- No
- MCL Violations
- 11
- Monitoring Violations
- 300
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Nitrate | MR | 60 | 2023 |
| Coliform (TCR) | MR | 37 | 2015 |
| Consumer Confidence Rule | Other | 13 | 2023 |
| Nitrate | MCL | 11 | 2017 |
| Revised Total Coliform Rule | MON | 9 | 2024 |
| Gross Alpha, Excl. Radon and U | MR | 8 | 2022 |
| Combined Uranium | MR | 5 | 2017 |
| cis-1,2-Dichloroethylene | MR | 4 | 2006 |
| 1,1-Dichloroethylene | MR | 4 | 2006 |
| 1,2-Dichloroethane | MR | 4 | 2006 |
| 1,1,1-Trichloroethane | MR | 4 | 2006 |
| 1,2-Dichloropropane | MR | 4 | 2006 |
| Trichloroethylene | MR | 4 | 2006 |
| 1,1,2-Trichloroethane | MR | 4 | 2006 |
| Tetrachloroethylene | MR | 4 | 2006 |
| CHLOROBENZENE | MR | 4 | 2006 |
| Benzene | MR | 4 | 2006 |
| Toluene | MR | 4 | 2006 |
| Styrene | MR | 4 | 2006 |
| Revised Total Coliform Rule | RPT | 4 | 2024 |
| DICHLOROMETHANE | MR | 4 | 2006 |
| o-Dichlorobenzene | MR | 4 | 2006 |
| p-Dichlorobenzene | MR | 4 | 2006 |
| Carbon tetrachloride | MR | 4 | 2006 |
| Ethylbenzene | MR | 4 | 2006 |
| trans-1,2-Dichloroethylene | MR | 4 | 2006 |
| BHC-GAMMA | MR | 3 | 2003 |
| Methoxychlor | MR | 3 | 2003 |
| Dalapon | MR | 3 | 2003 |
| Glyphosate | MR | 3 | 2003 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.