1,2,4-Trichlorobenzene
Rio Linda/Alverta Community Water District
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 | 11 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | ND | 10 | 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 |
|---|---|---|
| 2014-07-23 | 5810-031-0932 | ND |
| 2014-07-23 | 5810-025-1235 | ND |
| 2014-07-23 | 5810-022-1215 | ND |
| 2014-07-23 | 5810-019-1306 | ND |
| 2014-07-23 | 5810-018-0904 | ND |
| 2014-07-23 | 5810-017-0850 | ND |
| 2014-07-23 | 5810-016-1145 | ND |
| 2015-01-14 | 5810-023-0830 | ND |
| 2015-07-30 | 5810-022-1232 | ND |
| 2015-07-30 | 5810-031-0950 | ND |
| 2015-07-30 | 5810-023-1321 | ND |
| 2015-07-30 | 5810-016-1205 | ND |
| 2015-07-30 | 5810-021-1126 | ND |
| 2015-07-30 | 5810-020-1053 | ND |
| 2015-07-30 | 5810-017-0920 | ND |
| 2015-07-30 | 5810-019-1300 | ND |
| 2015-09-17 | 5810-025-0918 | ND |
| 2015-12-02 | 5810-018-1230 | ND |
| 2016-07-14 | 5810-016-1246 | ND |
| 2016-07-14 | 5810-022-1313 | ND |
| 2016-07-14 | 5810-019-1411 | ND |
| 2017-07-27 | 5810-016-1040 | ND |
| 2017-07-27 | 5810-019-1156 | ND |
| 2017-07-27 | 5810-022-1105 | ND |
| 2018-07-25 | 5810-023-0805 | ND |
| 2018-07-25 | 5810-016-1257 | ND |
| 2018-07-25 | 5810-017-0922 | ND |
| 2018-07-25 | 5810-031-1007 | ND |
| 2018-07-25 | 5810-018-0945 | ND |
| 2018-07-25 | 5810-025-0828 | ND |
| 2018-07-25 | 5810-022-1333 | ND |
| 2018-07-25 | 5810-021-1212 | ND |
| 2018-07-25 | 5810-019-1355 | ND |
| 2018-07-25 | 5810-020-1130 | ND |
| 2019-07-18 | 5810-019-1057 | ND |
| 2019-07-18 | 5810-022-1117 | ND |
| 2019-07-18 | 5810-016-1140 | ND |