1,2,4-Trichlorobenzene
Arizona Water Company - Sierra Vista
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 | ND | 2 | 0 | ND |
| 2016 | ND | 6 | 0 | ND |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 7 | 0 | ND |
| 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 |
|---|---|---|
| 2015-02-09 | 201502110433V | ND |
| 2015-04-07 | 201504080112V | ND |
| 2016-04-04 | 201604050478V | ND |
| 2016-04-04 | 201604050479V | ND |
| 2016-04-04 | 201604050480V | ND |
| 2016-04-04 | 201604050482V | ND |
| 2016-04-04 | 201604050483V | ND |
| 2016-04-04 | 201604050484V | ND |
| 2018-01-23 | 201801240104V | ND |
| 2018-01-23 | 201801240105V | ND |
| 2018-01-23 | 201801240106V | ND |
| 2018-01-23 | 201801240107V | ND |
| 2018-01-23 | 201801240108V | ND |
| 2018-01-23 | 201801240109V | ND |
| 2018-01-23 | 201801240110V | ND |