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National Drinking Water Database

1,2,3-Trichlorobenzene in California

1,2,3-Trichlorobenzene is a solvent and an intermediate for chemical manufacturing that was used historically as an insecticide for termite control.

The Most Polluted Communities in California

3 water utilities reported detecting 1,2,3-Trichlorobenzene in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average 1,2,3-Trichlorobenzene level

RankSystem Population Served Positive test results of total reported tests Average Level
1Valley of The Moon Water District
El Verano, CA
20,2411 of 30.05 ppb
(0 to 0.15 ppb)
2City of Dinuba
Dinuba, CA
19,2971 of 90.03 ppb
(0 to 0.3 ppb)
3City of Sunnyvale
Sunnyvale, CA
125,8001 of 34< 0.01 ppb
(0 to 0.1 ppb)

Health Based Limits for 1,2,3-Trichlorobenzene

There are no health based standards that EWG is using for this chemical

Violation Summary for 1,2,3-Trichlorobenzene in California

There are no violations reported for this contaminant in California