1,2,4-Trichlorobenzene
City of Pearl
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 | ND | 3 | 0 | ND |
2015 | ND | 3 | 0 | ND |
2016 | ND | 7 | 0 | ND |
2017 | N/A | 0 | 0 | N/A |
2018 | N/A | 0 | 0 | N/A |
2019 | ND | 4 | 0 | ND |
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 |
---|---|---|
2014-06-25 | 140626-020VO | ND |
2014-06-25 | 140626-019VO | ND |
2014-06-25 | 140626-018VO | ND |
2015-08-12 | 150813-005VO | ND |
2015-08-12 | 150813-004VO | ND |
2015-08-12 | 150813-003VO | ND |
2016-08-08 | 160809-036VO | ND |
2016-08-08 | 160809-038VO | ND |
2016-08-08 | 160809-037VO | ND |
2016-08-08 | 160809-035VO | ND |
2016-08-08 | 160809-034VO | ND |
2016-08-09 | 160810-016VO | ND |
2016-08-09 | 160810-015VO | ND |
2019-03-12 | 190313-002VO | ND |
2019-05-14 | 190515-002VO | ND |
2019-09-03 | 190904-017VO | ND |
2019-11-06 | 191107-003VO | ND |