1,2,4-Trichlorobenzene
Fern Valley Water District
1,2,4-Trichlorobenzene is an industrial solvent that can harm the adrenal glands and may increase the risk of cancer.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | N/A | 0 | 0 | N/A |
2015 | N/A | 0 | 0 | N/A |
2016 | N/A | 0 | 0 | N/A |
2017 | ND | 10 | 0 | ND |
2018 | N/A | 0 | 0 | N/A |
2019 | N/A | 0 | 0 | N/A |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 5 ppb
The EWG Health Guideline of 5 ppb for 1,2,4-trichlorobenzene was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against hormone disruption.
EPA Maximum Contaminant
Level (MCL) 70 ppb
The legal limit for 1,2,4-trichlorobenzene, established in 1992, was based on a toxicity study in laboratory animals conducted in 1981. This limit may not fully protect against hormone disruption.
ppb = parts per billion
All test results
Date | Lab ID | Result |
---|---|---|
2017-05-16 | 4790-004-0935 | ND |
2017-05-16 | 4790-005-1006 | ND |
2017-05-16 | 4790-009-0920 | ND |
2017-05-16 | 4790-010-0925 | ND |
2017-05-16 | 4790-014-1153 | ND |
2017-05-16 | 4790-016-1040 | ND |
2017-05-16 | 4790-021-1027 | ND |
2017-05-16 | 4790-022-1038 | ND |
2017-06-01 | 4790-011-0925 | ND |
2017-06-01 | 4790-015-1020 | ND |