1,2,4-Trichlorobenzene
Golden State Water Company - Cordova
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 8 | 0 | ND |
| 2015 | ND | 7 | 0 | ND |
| 2016 | ND | 7 | 0 | ND |
| 2017 | ND | 6 | 0 | ND |
| 2018 | ND | 15 | 0 | ND |
| 2019 | ND | 3 | 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 |
|---|---|---|
| 2014-01-14 | 2706-030-0945 | ND |
| 2014-01-14 | 2706-029-1305 | ND |
| 2014-01-14 | 2706-028-0920 | ND |
| 2014-01-14 | 2706-022-0845 | ND |
| 2014-01-14 | 2706-019-1020 | ND |
| 2014-01-14 | 2706-010-1140 | ND |
| 2014-01-14 | 2706-008-1050 | ND |
| 2014-03-04 | 2706-051-1121 | ND |
| 2015-01-13 | 2706-022-0930 | ND |
| 2015-01-13 | 2706-028-0940 | ND |
| 2015-01-13 | 2706-030-0910 | ND |
| 2015-01-13 | 2706-051-1233 | ND |
| 2015-01-13 | 2706-019-1023 | ND |
| 2015-01-13 | 2706-010-1157 | ND |
| 2015-01-13 | 2706-008-1109 | ND |
| 2016-02-02 | 2706-051-1220 | ND |
| 2016-02-02 | 2706-008-1035 | ND |
| 2016-02-02 | 2706-022-0920 | ND |
| 2016-02-09 | 9590-010-1155 | ND |
| 2016-02-09 | 9590-028-0955 | ND |
| 2016-02-09 | 9590-019-1040 | ND |
| 2016-02-09 | 9590-030-0925 | ND |
| 2017-02-23 | 9590-028-0908 | ND |
| 2017-02-23 | 9590-019-1050 | ND |
| 2017-02-23 | 9590-030-0955 | ND |
| 2017-03-07 | 9590-051-1144 | ND |
| 2017-05-05 | 9590-010-1413 | ND |
| 2017-05-25 | 9590-022-1010 | ND |
| 2018-01-10 | 9590-030-1110 | ND |
| 2018-01-10 | 9590-010-1419 | ND |
| 2018-01-10 | 9590-019-1215 | ND |
| 2018-01-10 | 9590-028-1139 | ND |
| 2018-03-06 | 9590-051-1055 | ND |
| 2018-03-06 | 9590-008-1211 | ND |
| 2018-04-03 | 9590-019-1419 | ND |
| 2018-04-03 | 9590-030-1309 | ND |
| 2018-04-03 | 9590-028-1339 | ND |
| 2018-04-03 | 9590-051-1150 | ND |
| 2018-04-03 | 9590-010-1221 | ND |
| 2018-04-03 | 9590-008-1238 | ND |
| 2018-05-01 | 9590-022-0906 | ND |
| 2018-08-21 | 9590-029-1044 | ND |
| 2018-11-06 | 9590-022-0905 | ND |
| 2019-01-08 | 9590-029-1047 | ND |
| 2019-01-08 | 9590-019-1430 | ND |
| 2019-01-08 | 9590-008-0943 | ND |