1,2,4-Trichlorobenzene
Richardson County Rural Water District 2
NOTE: Richardson County Rural Water District 2 purchases water from Falls City, City of which is required to test for 1,2,4-trichlorobenzene. Sample information shown below was taken by Falls City, City of.
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 | 2 | 0 | ND |
| 2019 | ND | 4 | 0 | ND |
| 2020 | ND | 8 | 0 | ND |
| 2021 | ND | 8 | 0 | ND |
| 2022 | ND | 8 | 0 | ND |
| 2023 | ND | 8 | 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
NOTE: Richardson County Rural Water District 2 purchases water from Falls City, City of which is required to test for 1,2,4-trichlorobenzene. Sample information shown below was taken by Falls City, City of.
| Date | Lab ID | Result |
|---|---|---|
| 2018-08-14 | 567278 | ND |
| 2018-08-14 | 567277 | ND |
| 2019-08-12 | 628467 | ND |
| 2019-08-12 | 628466 | ND |
| 2020-05-12 | 667088 | ND |
| 2020-08-10 | 689941 | ND |
| 2020-08-10 | 689940 | ND |
| 2021-08-09 | 753825 | ND |
| 2021-08-09 | 753824 | ND |
| 2022-08-09 | 816220 | ND |
| 2022-08-09 | 816219 | ND |
| 2023-06-12 | 856281 | ND |
| 2023-08-01 | 880284 | ND |
| 2023-08-01 | 880285 | ND |