1,2,4-Trichlorobenzene
Newberry System
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 | 7 | 0 | ND |
| 2019 | ND | 7 | 0 | ND |
| 2020 | ND | 9 | 0 | ND |
| 2021 | ND | 7 | 0 | ND |
| 2022 | ND | 7 | 0 | ND |
| 2023 | ND | 9 | 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 |
|---|---|---|
| 2018-02-13 | 2294974001 | ND |
| 2018-02-13 | 2294974008 | ND |
| 2018-02-13 | 2294974004 | ND |
| 2018-02-13 | 2294974002 | ND |
| 2018-05-16 | 1811900-01 | ND |
| 2018-07-12 | 1818847-01 | ND |
| 2018-11-08 | 2348797001 | ND |
| 2019-01-24 | H9A0846-02 | ND |
| 2019-01-24 | H9A0846-03 | ND |
| 2019-01-24 | H9A0846-05 | ND |
| 2019-01-24 | H9A0846-01 | ND |
| 2019-04-03 | H9D0597-01 | ND |
| 2019-09-11 | H9I0706-02 | ND |
| 2019-11-13 | H9K0598-01 | ND |
| 2020-02-06 | 21815988.00 | ND |
| 2020-02-06 | 21815962.00 | ND |
| 2020-02-06 | 21816001.00 | ND |
| 2020-02-06 | 21816070.00 | ND |
| 2020-02-06 | 21816045.00 | ND |
| 2020-02-06 | 21816028.00 | ND |
| 2020-05-19 | 22383265.00 | ND |
| 2020-08-13 | 22970005.00 | ND |
| 2020-11-18 | 23509510.00 | ND |
| 2021-01-14 | 23861813.00 | ND |
| 2021-01-14 | 23861860.00 | ND |
| 2021-01-14 | 23861893.00 | ND |
| 2021-01-28 | 23862366.00 | ND |
| 2021-05-13 | 24609087.00 | ND |
| 2021-08-12 | 25191899.00 | ND |
| 2021-11-16 | 25738682.00 | ND |
| 2022-02-08 | 26262319.00 | ND |
| 2022-02-08 | 26262340.00 | ND |
| 2022-02-08 | 26262384.00 | ND |
| 2022-02-08 | 26262298.00 | ND |
| 2022-05-17 | 26815278.00 | ND |
| 2022-08-16 | 27412280.00 | ND |
| 2022-11-21 | 27973143.00 | ND |
| 2023-02-23 | 28494966.00 | ND |
| 2023-02-23 | 28494899.00 | ND |
| 2023-02-23 | 28494987.00 | ND |
| 2023-02-23 | 28494943.00 | ND |
| 2023-02-23 | 28494920.00 | ND |
| 2023-02-23 | 28495008.00 | ND |
| 2023-05-15 | 29074201.00 | ND |
| 2023-07-13 | 29467603.00 | ND |
| 2023-11-07 | 30220796.00 | ND |