Know Your Environment. Protect Your Health.

1,2,4-Trichlorobenzene

Altoona Water Authority

1,2,4-Trichlorobenzene is an industrial solvent that can harm the adrenal glands and may increase the risk of cancer.

 

37

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND60ND
2019ND50ND
2020ND70ND
2021ND80ND
2022ND60ND
2023ND50ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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
2018-08-288H28046-01ND
2018-08-288H28044-01ND
2018-08-288H28051-01ND
2018-08-288H28032-01ND
2018-08-288H28031-01ND
2018-08-288H28047-01ND
2019-11-069K07058-01ND
2019-11-069K07058-03ND
2019-11-079K07074-01ND
2019-11-079K07072-01ND
2019-12-059L05126-01ND
2020-02-0621729168.00ND
2020-08-0522869683.00ND
2020-08-0522869682.00ND
2020-08-0522869681.00ND
2020-08-1022869894.00ND
2020-08-1022869895.00ND
2020-08-1022869893.00ND
2021-07-0124897497.00ND
2021-07-0824897518.00ND
2021-08-1025092067.00ND
2021-08-1025092003.00ND
2021-08-1025092066.00ND
2021-08-1025092004.00ND
2021-08-1025092005.00ND
2021-12-1325828694.00ND
2022-02-2426177231.00ND
2022-08-1627309593.00ND
2022-08-1627309669.00ND
2022-08-1627308834.00ND
2022-08-1627309635.00ND
2022-11-1027885516.00ND
2023-07-2629371562.00ND
2023-07-2629371519.00ND
2023-07-2629371475.00ND
2023-07-2629371541.00ND
2023-07-2629371497.00ND