Know Your Environment. Protect Your Health.

o-Dichlorobenzene

City of Tacoma

o-Dichlorobenzene is used as a chemical intermediate for making agricultural herbicides. It is toxic to the liver, kidneys and the nervous system, and causes cancer in animal studies.

 

19

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND30ND
2020N/A00N/A
2021ND50ND
2022ND50ND
2023ND30ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 600 ppb

The EWG Health Guideline of 600 ppb for o-dichlorobenzene 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 harm to internal organs.

EPA Maximum Contaminant
Level (MCL): 600 ppb

The legal limit for o-dichlorobenzene, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1970s.

ppb = parts per billion

All test results

Date Lab ID Result
2018-02-07ND
2018-03-12ND
2018-03-19ND
2019-01-02ND
2019-07-24ND
2019-12-03ND
2021-06-214233773ND
2021-06-214137307ND
2021-06-214137308ND
2021-06-214137309ND
2021-06-304142811ND
2022-09-154368469ND
2022-09-234368470ND
2022-10-114363364ND
2022-11-154428454ND
2022-11-164388597ND
2023-06-204542958ND
2023-07-124542959ND
2023-07-124542960ND