National Drinking Water Database
Tritium in California
Tritium is a pollutant from commercial nuclear reactors, research reactors and government weapons production plants.
The Most Polluted Communities in California
37 water utilities reported detecting Tritium in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies
Ranked by highest average Tritium level
| Rank | System | Population Served | Positive test results of total reported tests | Average Level (Range) |
|---|---|---|---|---|
| 1 | South Tahoe Pud - Main South Lake Tahoe, CA | 60,000 | 1 of 1 | 1393 pCi/L (1393 pCi/L) |
| 2 | Reynolds Resorts - Sacramento Llc West Sacramento, CA | 300 | 1 of 1 | 480 pCi/L (480 pCi/L) |
| 3 | West Kern Cwd Taft, CA | 16,800 | 3 of 3 | 212.1 pCi/L (98.59 to 328.63 pCi/L) |
| 4 | Hidden Valley Lake Csd Hidden Valley Lake, CA | 6,757 | 1 of 1 | 195 pCi/L (195 pCi/L) |
| 5 | Elsinore Valley Mwd - Temescal Lake Elsinore, CA | 3,010 | 3 of 3 | 177.82 pCi/L (55.06 to 386 pCi/L) |
| 6 | Riverview Wd Lakeside, CA | 16,000 | 1 of 1 | 167.03 pCi/L (167.03 pCi/L) |
| 7 | City of San Juan Capistrano San Juan Capistrano, CA | 33,800 | 1 of 1 | 164 pCi/L (164 pCi/L) |
| 8 | Pomona - City, Water Dept. Pomona, CA | 156,500 | 59 of 68 | 160.9 pCi/L (0 to 627.67 pCi/L) |
| 9 | Elsinore Valley Mwd Lake Elsinore, CA | 81,101 | 12 of 12 | 150.93 pCi/L (5.68 to 460 pCi/L) |
| 10 | City of Daly City Daly City, CA | 92,311 | 1 of 1 | 134.36 pCi/L (134.36 pCi/L) |
Health Based Limits for Tritium
There are no health based standards that EWG is using for this chemical
Violation Summary for Tritium in California
There are no violations reported for this contaminant in California