1,2,4-Trichlorobenzene
Hynes Estates 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 | ND | 7 | 0 | ND |
| 2015 | ND | 5 | 0 | ND |
| 2016 | ND | 6 | 0 | ND |
| 2017 | ND | 5 | 0 | ND |
| 2018 | ND | 4 | 0 | ND |
| 2019 | ND | 8 | 0 | ND |
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 |
|---|---|---|
| 2014-01-15 | 4417-002-1300 | ND |
| 2014-01-15 | 4417-001-1235 | ND |
| 2014-02-24 | 4417-001-1215 | ND |
| 2014-02-24 | 4417-001-1210 | ND |
| 2014-04-01 | 4417-001-1350 | ND |
| 2014-07-02 | 4417-001-1300 | ND |
| 2014-10-22 | 4417-001-1010 | ND |
| 2015-01-15 | 4417-002-0940 | ND |
| 2015-03-18 | 4417-001-1120 | ND |
| 2015-04-20 | 4417-001-1120 | ND |
| 2015-08-03 | 4417-001-1115 | ND |
| 2015-10-01 | 4417-001-0915 | ND |
| 2016-01-13 | 4417-002-1040 | ND |
| 2016-01-13 | 4417-001-1115 | ND |
| 2016-04-04 | 4417-001-1025 | ND |
| 2016-07-05 | 4417-001-0930 | ND |
| 2016-07-14 | 4417-001-1150 | ND |
| 2016-10-03 | 4417-001-1010 | ND |
| 2017-01-04 | 4417-001-1030 | ND |
| 2017-04-13 | 4417-001-1230 | ND |
| 2017-04-13 | 4417-002-1040 | ND |
| 2017-07-25 | 4417-001-0905 | ND |
| 2017-10-26 | 4417-001-0840 | ND |
| 2018-01-04 | 4417-001-0900 | ND |
| 2018-04-16 | 4417-001-1115 | ND |
| 2018-07-03 | 4417-001-0935 | ND |
| 2018-10-09 | 4417-001-1015 | ND |
| 2019-01-08 | 4417-001-1130 | ND |
| 2019-04-01 | 4417-001-0840 | ND |
| 2019-07-01 | 4417-001-1000 | ND |
| 2019-07-10 | 4417-005-1130 | ND |
| 2019-08-22 | 4417-005-1045 | ND |
| 2019-08-22 | 4417-005-1035 | ND |
| 2019-10-02 | 4417-001-1000 | ND |
| 2019-11-07 | 4417-005-1310 | ND |