1,2,4-Trichlorobenzene
Pine Valley Mutual Water Company
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 |
|---|---|---|---|---|
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | ND | 8 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 3 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
ppb = parts per billion
State and national drinking water standards and health guidelines
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 |
|---|---|---|
| 2015-09-14 | 4790-004-1400 | ND |
| 2015-09-14 | 4790-007-1435 | ND |
| 2015-09-14 | 4790-009-1450 | ND |
| 2015-09-14 | 4790-010-1520 | ND |
| 2015-10-13 | 4790-001-1355 | ND |
| 2015-10-13 | 4790-003-1505 | ND |
| 2015-10-13 | 4790-005-1450 | ND |
| 2015-10-13 | 4790-006-1540 | ND |
| 2018-10-15 | 4790-001-0940 | ND |
| 2018-10-15 | 4790-009-1025 | ND |
| 2018-10-15 | 4790-010-0925 | ND |