Northern Mariana Islands Water Quality
Health violation data for 36 community water systems in Northern Mariana Islands. Based on EPA Safe Drinking Water Information System (SDWIS) data.
Water Systems
36
Total Violations
165
Systems with Violations
13
Cities with Issues
1
Water Systems with Most Violations
| # | Water System | Violations | Health |
|---|---|---|---|
| 1 | Commonwealth Utilities Corp (Saipan) Saipan | 77 | Yes |
| 2 | Pacific Palms Saipan | 18 | Yes |
| 3 | Aqua Water Saipan | 16 | Yes |
| 4 | Crystal Ice And Water Saipan | 12 | Yes |
| 5 | Commonwealth Utilities Corp (Rota) Saipan | 9 | Yes |
| 6 | Diamond Water Gualo Rai Saipan | 7 | Yes |
| 7 | Modern Stationary Saipan | 6 | Yes |
| 8 | Commonwealth Utilities Corp (Tinian) Saipan | 5 | Yes |
| 9 | The Water Company Saipan | 4 | Yes |
| 10 | Afetna Supermarket Saipan | 4 | Yes |
| 11 | Tropical Drinking Water Saipan | 3 | Yes |
| 12 | Saipan Vegas Saipan | 2 | Yes |
| 13 | San Jose Mart Water Saipan | 2 | Yes |
Most Common Contaminants in Northern Mariana Islands
| Contaminant | Violations | Systems Affected |
|---|---|---|
| Fluoride | 148 | 11 |
| E. coli | 12 | 2 |
| Total Coliform (RTCR) | 4 | 2 |
| Chlorine | 1 | 1 |
Cities with Water Quality Issues
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About This Data
Water quality data is from the EPA Safe Drinking Water Information System (SDWIS). Health-based violations include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations. Only community water systems (CWS) in Northern Mariana Islands are included.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.