1,2,4-Trichlorobenzene
Upper Hanover Water Authority
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 |
|---|---|---|---|---|
| 2018 | ND | 6 | 0 | ND |
| 2019 | ND | 5 | 0 | ND |
| 2020 | ND | 9 | 0 | ND |
| 2021 | ND | 10 | 0 | ND |
| 2022 | ND | 13 | 0 | ND |
| 2023 | ND | 7 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
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 |
|---|---|---|
| 2018-01-30 | 8001978-01 | ND |
| 2018-04-25 | 8008140-01 | ND |
| 2018-07-17 | 8017906-01 | ND |
| 2018-07-25 | 8019752-01 | ND |
| 2018-07-25 | 8019752-02 | ND |
| 2018-10-10 | 8028641-01 | ND |
| 2019-01-23 | 8038660-01 | ND |
| 2019-05-07 | 9009685-01 | ND |
| 2019-08-21 | 8038658-01 | ND |
| 2019-09-24 | 9034252-01 | ND |
| 2019-12-11 | 9033962-01 | ND |
| 2020-03-18 | 21847889.00 | ND |
| 2020-03-20 | 21847914.00 | ND |
| 2020-03-20 | 21847913.00 | ND |
| 2020-04-28 | 22024155.00 | ND |
| 2020-04-28 | 22024154.00 | ND |
| 2020-06-24 | 22417289.00 | ND |
| 2020-07-01 | 22417290.00 | ND |
| 2020-10-06 | 23183404.00 | ND |
| 2020-11-20 | 23362961.00 | ND |
| 2021-03-16 | 24061082.00 | ND |
| 2021-03-19 | 24061083.00 | ND |
| 2021-04-21 | 24248438.00 | ND |
| 2021-04-30 | 24248590.00 | ND |
| 2021-07-06 | 24829849.00 | ND |
| 2021-07-09 | 24830002.00 | ND |
| 2021-10-05 | 25405583.00 | ND |
| 2021-10-29 | 25405740.00 | ND |
| 2021-12-29 | 25765018.00 | ND |
| 2021-12-29 | 25764997.00 | ND |
| 2022-02-01 | 25943595.00 | ND |
| 2022-02-01 | 25943594.00 | ND |
| 2022-02-01 | 25943596.00 | ND |
| 2022-02-23 | 26118531.00 | ND |
| 2022-02-23 | 26118532.00 | ND |
| 2022-05-05 | 26649350.00 | ND |
| 2022-05-06 | 26649351.00 | ND |
| 2022-06-02 | 26649528.00 | ND |
| 2022-06-03 | 26649529.00 | ND |
| 2022-07-07 | 27037969.00 | ND |
| 2022-07-08 | 27037970.00 | ND |
| 2022-12-01 | 27999398.00 | ND |
| 2022-12-02 | 27999399.00 | ND |
| 2023-01-04 | 28173522.00 | ND |
| 2023-04-10 | 28703142.00 | ND |
| 2023-04-11 | 28703141.00 | ND |
| 2023-04-11 | 28703140.00 | ND |
| 2023-07-03 | 29302583.00 | ND |
| 2023-10-03 | 29700857.00 | ND |
| 2023-11-28 | 30246494.00 | ND |