1,2,4-Trichlorobenzene
Altoona Waterworks
1,2,4-Trichlorobenzene is an industrial solvent that can harm the adrenal glands and may increase the risk of cancer.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | ND | 6 | 0 | ND |
2015 | ND | 3 | 0 | ND |
2016 | ND | 3 | 0 | ND |
2017 | ND | 9 | 0 | ND |
2018 | ND | 5 | 0 | ND |
2019 | ND | 5 | 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 |
---|---|---|
2014-06-16 | 797064 | ND |
2014-06-16 | 797067 | ND |
2014-06-16 | 797069 | ND |
2014-06-16 | 797062 | ND |
2014-06-23 | 798472 | ND |
2014-11-17 | 831786 | ND |
2015-06-22 | 866991 | ND |
2015-06-22 | 866986 | ND |
2015-06-22 | 866993 | ND |
2016-09-13 | 945421 | ND |
2016-09-13 | 945417 | ND |
2016-12-07 | 964760 | ND |
2017-03-08 | 976828 | ND |
2017-04-17 | 983476 | ND |
2017-04-17 | 983480 | ND |
2017-06-06 | 995884 | ND |
2017-07-19 | 1005209 | ND |
2017-07-19 | 1005206 | ND |
2017-07-19 | 1005188 | ND |
2017-09-05 | 1015787 | ND |
2017-12-04 | 1031739 | ND |
2018-03-12 | 1044559 | ND |
2018-06-19 | 1062457 | ND |
2018-06-19 | 1062452 | ND |
2018-09-18 | 1081371 | ND |
2018-12-17 | 1097851 | ND |
2019-03-11 | 1108740 | ND |
2019-06-18 | 1128839 | ND |
2019-06-18 | 1128844 | ND |
2019-09-16 | 1148215 | ND |
2019-12-09 | 1164494 | ND |