Know Your Environment. Protect Your Health.

1,2,4-Trichlorobenzene

City of Nampa

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

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND100ND
2019N/A00N/A
2020ND10ND
2021ND70ND
2022ND20ND
2023ND40ND

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
2018-07-02V1830569ND
2018-10-08V1850013ND
2018-10-08V1850014ND
2018-10-08V1850015ND
2018-10-08V1850019ND
2018-10-08V1850023ND
2018-10-08V1850025ND
2018-10-08V1850027ND
2018-10-08V1850028ND
2018-10-08V1850109ND
2020-07-14V2033050ND
2021-02-08V2105829ND
2021-02-08V2105826ND
2021-02-08V2105828ND
2021-03-08V2110615ND
2021-03-08V2110611ND
2021-03-08V2110613ND
2021-11-09V2160872ND
2022-11-16V2256977ND
2022-11-18V2256985ND
2023-02-01V2302073-04ND
2023-05-10V2309050-02ND
2023-11-30V2325654-01ND
2023-12-21V2327316-01ND