1,2,4-Trichlorobenzene
Stafford County Utilities
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 | 4 | 0 | ND |
| 2015 | ND | 6 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 2 | 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 |
|---|---|---|
| 2014-02-20 | E131201566 | ND |
| 2014-06-09 | E140303860 | ND |
| 2014-08-14 | E140700185 | ND |
| 2014-08-14 | E140700183 | ND |
| 2015-02-12 | VA010-DCLS | ND |
| 2015-03-23 | VA010-DCLS | ND |
| 2015-05-19 | VA010-DCLS | ND |
| 2015-07-25 | VA010-DCLS | ND |
| 2015-07-27 | VA010-DCLS | ND |
| 2015-10-12 | VA010-DCLS | ND |
| 2016-01-13 | E151206878 | ND |
| 2016-04-20 | E160203649 | ND |
| 2016-08-29 | E160605325 | ND |
| 2017-04-11 | E170204629 | ND |
| 2017-09-06 | E170607134 | ND |
| 2018-04-19 | E180303725 | ND |
| 2018-07-26 | E180703364 | ND |
| 2019-05-06 | E190400755 | ND |
| 2019-07-16 | E190700771 | ND |