1,2,4-Trichlorobenzene
Bethlehem Water District No. 1
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 2 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 2 | 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 |
|---|---|---|
| 2014-04-16 | JH1402536-POC | ND |
| 2014-04-16 | JH1402534-POC | ND |
| 2015-05-19 | JH1502990-POC | ND |
| 2015-05-19 | JH1502988-POC | ND |
| 2015-05-19 | JH1502992-POC | ND |
| 2016-04-19 | JH1602762-OC | ND |
| 2016-10-24 | JH1609519.POC.CL | ND |
| 2016-10-24 | JH1609521.POC.VL | ND |
| 2017-10-18 | JH1708533.POC | ND |
| 2017-10-18 | JH1708518.POC | ND |
| 2017-10-18 | JH1708530.POC | ND |
| 2018-10-31 | JH180653.POC | ND |
| 2018-10-31 | JH1808647.POC | ND |
| 2018-10-31 | JH1908653.POC | ND |
| 2019-10-29 | JH1907765.POC | ND |
| 2019-10-29 | JH1907761.POC | ND |