MARICOPA MOUNTAIN DWID 1
PWS ID: AZ0411087 · MARICOPA, Arizona 85139
Population Served
450
Total Violations
476
Health-Based Violations
245
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 3
- County
- Pinal
- School/Daycare
- No
- MCL Violations
- 245
- Monitoring Violations
- 184
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Nitrate | MCL | 167 | 2025 |
| Arsenic | MCL | 77 | 2021 |
| Coliform (TCR) | MR | 34 | 2011 |
| Arsenic | MR | 28 | 2017 |
| Consumer Confidence Rule | Other | 22 | 2021 |
| Chlorine | MR | 22 | 2021 |
| Fluoride | MR | 15 | 2015 |
| Nitrate | MR | 15 | 2012 |
| Public Notice | Other | 7 | 2025 |
| Cadmium | MR | 5 | 2015 |
| Selenium | MR | 5 | 2015 |
| Chromium | MR | 5 | 2015 |
| Mercury | MR | 5 | 2015 |
| Barium | MR | 5 | 2015 |
| Lead and Copper Rule | MR | 3 | 2004 |
| TTHM | MR | 3 | 2008 |
| Total Haloacetic Acids (HAA5) | MR | 3 | 2008 |
| Antimony, Total | MR | 3 | 2015 |
| Thallium, Total | MR | 3 | 2015 |
| Nickel | MR | 3 | 2015 |
| CYANIDE | MR | 3 | 2015 |
| Beryllium, Total | MR | 3 | 2015 |
| Di(2-ethylhexyl) phthalate | MCL | 1 | 2000 |
| 1,2,4-Trichlorobenzene | MR | 1 | 1999 |
| Xylenes, Total | MR | 1 | 1999 |
| DICHLOROMETHANE | MR | 1 | 1999 |
| o-Dichlorobenzene | MR | 1 | 1999 |
| p-Dichlorobenzene | MR | 1 | 1999 |
| Carbon tetrachloride | MR | 1 | 1999 |
| Trichloroethylene | MR | 1 | 1999 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.