District of Columbia Water Quality
Health violation data for 12 community water systems in District of Columbia. Based on EPA Safe Drinking Water Information System (SDWIS) data.
Water Systems
12
Total Violations
51
Systems with Violations
9
Cities with Issues
1
Water Systems with Most Violations
| # | Water System | Violations | Health |
|---|---|---|---|
| 1 | PASCHAL SHERMAN INDIAN SCHOOL Washington | 14 | Yes |
| 2 | JOINT BASE ANACOSTIA - BOLLING Washington | 11 | Yes |
| 3 | Dibe Yazhi Habitiin (Borrego Pass) Day School-BIE Washington | 7 | Yes |
| 4 | NAVAL STATION WASHINGTON - WNY Washington | 6 | Yes |
| 5 | D.C. WATER AND SEWER AUTHORITY Washington | 5 | Yes |
| 6 | Lake Valley Navajo School - BIE Washington | 3 | Yes |
| 7 | BIE CHEMAWA INDIAN SCHOOL Washington | 3 | Yes |
| 8 | Eastern Navajo Agency - BIE Washington | 1 | Yes |
| 9 | Fort Wingate Community Washington | 1 | Yes |
Most Common Contaminants in District of Columbia
| Contaminant | Violations | Systems Affected |
|---|---|---|
| Fluoride | 13 | 1 |
| Total Coliform (RTCR) | 9 | 2 |
| Arsenic | 9 | 1 |
| Combined Radium 226/228 | 8 | 2 |
| Atrazine | 4 | 2 |
| E. coli | 3 | 2 |
| Gross Alpha | 3 | 3 |
| Total Trihalomethanes (TTHM) | 2 | 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 District of Columbia 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.