1,2,4-Trichlorobenzene
City of Waco
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 | 4 | 0 | ND |
2015 | ND | 3 | 0 | ND |
2016 | ND | 3 | 0 | ND |
2017 | ND | 4 | 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 |
---|---|---|
2014-02-12 | AC42617 | ND |
2014-08-04 | AC61951 | ND |
2014-08-04 | AC61957 | ND |
2014-08-04 | AC61953 | ND |
2015-07-07 | AC98595 | ND |
2015-07-07 | AC98597 | ND |
2015-10-08 | AD10010 | ND |
2016-07-11 | AD43615 | ND |
2016-07-11 | AD43619 | ND |
2016-07-11 | AD43617 | ND |
2017-04-13 | AD79636 | ND |
2017-07-27 | AD91148 | ND |
2017-07-27 | AD91150 | ND |
2017-10-02 | AD98801 | ND |
2018-07-19 | AE33981 | ND |
2018-07-19 | AE33959 | ND |
2019-07-23 | AE75567 | ND |
2019-07-23 | AE75565 | ND |