1,2,4-Trichlorobenzene
Crystal Lake
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 | 1 | 0 | ND |
| 2016 | ND | 1 | 0 | ND |
| 2017 | ND | 5 | 0 | ND |
| 2018 | ND | 17 | 0 | ND |
| 2019 | ND | 18 | 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 |
|---|---|---|
| 2014-02-12 | 14B0165-02 | ND |
| 2014-08-12 | 14H0225-03 | ND |
| 2014-08-12 | 14H0266-06 | ND |
| 2014-08-12 | 14H0266-07 | ND |
| 2014-08-12 | 14H0266-02 | ND |
| 2014-08-12 | 14H0266-04 | ND |
| 2014-11-03 | 14K0027-01 | ND |
| 2015-02-18 | 15B0352-01VOC | ND |
| 2016-02-09 | 16B0195-07VOC | ND |
| 2017-02-07 | 17B0148-03 | ND |
| 2017-07-11 | 17G0205-02 | ND |
| 2017-07-11 | 17G0205-05 | ND |
| 2017-07-11 | 17G0205-03 | ND |
| 2017-07-11 | 17G0205-01 | ND |
| 2018-01-09 | 18A0154-08 | ND |
| 2018-01-09 | 18A0154-07 | ND |
| 2018-01-09 | 18A0154-06 | ND |
| 2018-01-09 | 18A0154-04_VOC | ND |
| 2018-04-10 | 8043251-03 | ND |
| 2018-04-10 | 8043251-04 | ND |
| 2018-04-10 | 8043251-02 | ND |
| 2018-04-10 | 8043251-01 | ND |
| 2018-06-20 | 18F0826-01_02 | ND |
| 2018-08-07 | 1808572-007A | ND |
| 2018-08-07 | 1808572-005A | ND |
| 2018-08-07 | 1808572-003A | ND |
| 2018-08-07 | 1808572-001A | ND |
| 2018-10-30 | 1810M75-005A | ND |
| 2018-10-30 | 1810M75-003A | ND |
| 2018-10-30 | 1810M75-001A | ND |
| 2018-11-19 | 18K0523-01_02 | ND |
| 2019-01-08 | 1901484-007A | ND |
| 2019-01-08 | 1901484-005A | ND |
| 2019-01-08 | 1901484-003A | ND |
| 2019-01-08 | 1901484-001A | ND |
| 2019-04-09 | 1904788-007A | ND |
| 2019-04-09 | 1904788-005A | ND |
| 2019-04-09 | 1904788-003A | ND |
| 2019-07-16 | 1907C22-007A | ND |
| 2019-07-16 | 1907C22-005A | ND |
| 2019-07-16 | 1907C22-003A | ND |
| 2019-07-16 | 1907C22-001A | ND |
| 2019-10-14 | 1910B62-005A | ND |
| 2019-10-14 | 1910B62-001A | ND |
| 2019-10-14 | 1910B62-007A | ND |
| 2019-10-14 | 1910B62-003A | ND |
| 2019-11-05 | 1910N75-005A | ND |
| 2019-11-05 | 1910N75-003A | ND |
| 2019-11-05 | 1910N75-001A | ND |