Guam Water Quality
Health violation data for 4 community water systems in Guam. Based on EPA Safe Drinking Water Information System (SDWIS) data.
Water Systems
4
Total Violations
6
Systems with Violations
2
Cities with Issues
1
Water Systems with Most Violations
| # | Water System | Violations | Health |
|---|---|---|---|
| 1 | GWA CENTRAL WATER SYSTEM Mangilao | 4 | Yes |
| 2 | GWA SOUTHERN WATER SYSTEM Mangilao | 2 | Yes |
Most Common Contaminants in Guam
| Contaminant | Violations | Systems Affected |
|---|---|---|
| E. coli | 6 | 2 |
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 Guam 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.