1,2,4-Trichlorobenzene
New Orleans Carrollton Waterworks
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 | 4 | 0 | ND |
| 2019 | ND | 12 | 0 | ND |
| 2020 | ND | 3 | 0 | ND |
| 2021 | ND | 3 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 3 | 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 |
|---|---|---|
| 2018-03-15 | 35380391002 | ND |
| 2018-03-15 | 35380391001 | ND |
| 2018-03-15 | 35380391001 | ND |
| 2018-03-15 | 35380391002 | ND |
| 2019-02-27 | 35451098001 | ND |
| 2019-02-27 | 35451097001 | ND |
| 2019-02-27 | 35451098001 | ND |
| 2019-02-27 | 35451097001 | ND |
| 2019-09-05 | 35495386001 | ND |
| 2019-09-05 | 35495386003 | ND |
| 2019-09-05 | 35495386001 | ND |
| 2019-09-05 | 35495386003 | ND |
| 2019-09-05 | 35495386002 | ND |
| 2019-09-05 | 35495386002 | ND |
| 2019-09-19 | 35499418001 | ND |
| 2019-09-19 | 35499418001 | ND |
| 2020-03-26 | 35540024001 | ND |
| 2020-03-26 | 35540029001 | ND |
| 2020-03-26 | 35540032001 | ND |
| 2021-03-29 | 35622307001 | ND |
| 2021-03-29 | 35622313001 | ND |
| 2021-03-29 | 35622309001 | ND |
| 2022-03-15 | 35704706001 | ND |
| 2022-03-15 | 35704707001 | ND |
| 2022-03-15 | 35704709001 | ND |
| 2023-03-06 | 35783931001 | ND |
| 2023-03-06 | 35783938001 | ND |
| 2023-03-06 | 35783939001 | ND |