1,2,4-Trichlorobenzene
Ranch Hand Apartments
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 | 2 | 0 | ND |
| 2020 | ND | 6 | 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 |
|---|---|---|
| 2018-08-22 | Q1833679007 | ND |
| 2018-08-22 | Q1833679004 | ND |
| 2019-02-21 | Q1907708004 | ND |
| 2019-02-21 | Q1907708007 | ND |
| 2020-02-13 | Q2005887008 | ND |
| 2020-02-13 | Q2005887010 | ND |
| 2020-02-13 | Q2005887012 | ND |
| 2020-05-21 | Q2020391003 | ND |
| 2020-08-17 | Q2032718003 | ND |
| 2020-12-14 | Q2049491004 | ND |
| 2021-08-18 | Q2122319001 | ND |
| 2021-08-18 | Q2122319003 | ND |
| 2021-08-18 | Q2122319005 | ND |
| 2022-06-08 | Q2216110005 | ND |
| 2022-06-08 | Q2216110007 | ND |
| 2022-06-08 | Q2216110009 | ND |
| 2023-03-02 | Q2308578003 | ND |
| 2023-03-02 | Q2308578005 | ND |
| 2023-03-02 | Q2308578010 | ND |