Selenium
EPA contaminant code: 1045
Total Violations
52,594
Systems Affected
13,645
Health-Based %
6.3%
Most Affected State
—
Most Affected Water Systems
| System | State | Violations | Population |
|---|---|---|---|
| VALLEY ESTATES | TX | 204 | 68 |
| HUMPHREY, CITY OF | NE | 176 | 842 |
| TOWN NORTH VILLAGE WATER SYSTEM | TX | 167 | 360 |
| VALLEY ESTATES | TX | 163 | 68 |
| LEISURE MOUNTAIN MHP | NM | 127 | 161 |
| RIDGEFIELD PUBLIC WORKS | WA | 114 | 20,967 |
| PINEDALE ESTATES DWID | AZ | 107 | 208 |
| GLADE, CITY OF | KS | 96 | 52 |
| LOGAN, CITY OF | KS | 89 | 440 |
| NAMBE HEADSTART | NM | 83 | 40 |
| FALFURRIAS UTILITY BOARD | TX | 81 | 4,473 |
| RIVERSIDE CSA #122-MESA VERDE | CA | 77 | 766 |
| PA AMERICAN AUDUBON | PA | 77 | 8,200 |
| BEVERLY, CITY OF | KS | 72 | 135 |
| MUSTANG STATION WS | TX | 72 | 35 |
| ROSA JOINT VENTURES WATER SYSTEM | NM | 68 | 239 |
| SEVEN ESTATES | TX | 67 | 189 |
| BURR OAK, CITY OF | KS | 65 | 142 |
| GLEN ELDER, CITY OF | KS | 61 | 359 |
| ALBION, CITY OF | NE | 59 | 1,700 |
| ASGARD SUBDIVISION WA | CO | 58 | 80 |
| CITY OF DAVIS | CA | 57 | 67,457 |
| FOWLER TOWN OF | CO | 57 | 1,169 |
| LAUREL, CITY OF | NE | 56 | 972 |
| COAL MOUNTAIN WATER | WV | 56 | 80 |
| MOUNT EAGLE WATER ASSOC | PA | 55 | 130 |
| DEDHAM WATER SUPPLY | IA | 54 | 221 |
| FRANKLIN WATER SYSTEMS 3 | TX | 51 | 201 |
| HIAWATHA WATER | WV | 51 | 63 |
| RISING CITY, VILLAGE OF | NE | 50 | 374 |