1,2,4-Trichlorobenzene
Erie City 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 | 7 | 0 | ND |
| 2019 | ND | 5 | 0 | ND |
| 2020 | ND | 3 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 2023 | ND | 2 | 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 |
|---|---|---|
| 2018-01-08 | 3849232 | ND |
| 2018-02-20 | 3876401 | ND |
| 2018-05-08 | 3931239 | ND |
| 2018-05-21 | 3941491 | ND |
| 2018-08-06 | 4012683 | ND |
| 2018-08-21 | 4030524 | ND |
| 2018-11-05 | 4111318 | ND |
| 2019-01-23 | 4181796 | ND |
| 2019-05-21 | 4302831 | ND |
| 2019-09-10 | 4415500 | ND |
| 2019-11-18 | 9112945-01 | ND |
| 2019-11-18 | 4489097 | ND |
| 2020-03-19 | 21954376.00 | ND |
| 2020-05-18 | 22336333.00 | ND |
| 2020-09-09 | 23112172.00 | ND |
| 2021-04-06 | 24363625.00 | ND |
| 2021-05-19 | 24561029.00 | ND |
| 2022-04-12 | 26577553.00 | ND |
| 2022-05-17 | 26770586.00 | ND |
| 2023-04-04 | 28825961.00 | ND |
| 2023-04-18 | 28826015.00 | ND |