1,2,4-Trichlorobenzene
Bethel Water Department
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 | 2 | 0 | ND |
| 2015 | ND | 2 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | ND | 5 | 0 | ND |
| 2019 | ND | 3 | 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 |
|---|---|---|
| 2014-07-15 | 188551CH | ND |
| 2014-07-15 | 188550CH | ND |
| 2015-03-03 | 194668CH | ND |
| 2015-03-03 | 194670CH | ND |
| 2016-02-09 | 205073CH | ND |
| 2016-02-09 | 205075CH | ND |
| 2016-05-12 | 208037GE | ND |
| 2017-09-13 | 304907GE | ND |
| 2017-09-13 | 304908GE | ND |
| 2017-11-20 | 307165GE | ND |
| 2018-03-01 | 309832GE | ND |
| 2018-03-01 | 309833GE | ND |
| 2018-03-01 | 309834GE | ND |
| 2018-04-17 | 311175GE | ND |
| 2018-07-03 | 313822GE | ND |
| 2019-01-29 | 320479GE | ND |
| 2019-01-29 | 320491GE | ND |
| 2019-01-29 | 320484GE | ND |