GW -BWC, INC.- NSWC
PWS ID: AZ0407179 · MARICOPA, Arizona 85138
Population Served
319
Total Violations
88
Health-Based Violations
0
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 107
- County
- Maricopa
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 80
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 16 | 2004 |
| Consumer Confidence Rule | Other | 7 | 2016 |
| Chlorine | MR | 7 | 2024 |
| TTHM | MR | 4 | 2012 |
| Total Haloacetic Acids (HAA5) | MR | 4 | 2012 |
| Endrin | MR | 1 | 2003 |
| BHC-GAMMA | MR | 1 | 2003 |
| Toxaphene | MR | 1 | 2003 |
| Dalapon | MR | 1 | 2003 |
| Endothall | MR | 1 | 2003 |
| OXAMYL | MR | 1 | 2003 |
| Simazine | MR | 1 | 2003 |
| Di(2-ethylhexyl) phthalate | MR | 1 | 2003 |
| Heptachlor epoxide | MR | 1 | 2003 |
| HEXACHLOROBENZENE | MR | 1 | 2003 |
| ETHYLENE DIBROMIDE | MR | 1 | 2003 |
| Radium-226 | MR | 1 | 2004 |
| Combined Radium (-226 and -228) | MR | 1 | 2004 |
| cis-1,2-Dichloroethylene | MR | 1 | 2005 |
| DICHLOROMETHANE | MR | 1 | 2005 |
| o-Dichlorobenzene | MR | 1 | 2005 |
| p-Dichlorobenzene | MR | 1 | 2005 |
| Vinyl chloride | MR | 1 | 2005 |
| Carbon tetrachloride | MR | 1 | 2005 |
| 1,2-Dichloropropane | MR | 1 | 2005 |
| Trichloroethylene | MR | 1 | 2005 |
| Nitrate | MR | 1 | 2004 |
| Benzene | MR | 1 | 2005 |
| Styrene | MR | 1 | 2005 |
| 1,1-Dichloroethylene | MR | 1 | 2005 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.