Know Your Environment. Protect Your Health.

o-Dichlorobenzene

Guilford Water Authority

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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND10ND
2020ND30ND
2021ND50ND
2022ND10ND
2023ND70ND

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
2018-05-29(104)ND
2018-09-04(104)ND
2018-12-11(104)ND
2019-03-05(104)ND
2020-11-0223491223.00ND
2020-11-0223491202.00ND
2020-11-0223491181.00ND
2021-03-0924197194.00ND
2021-03-0924197215.00ND
2021-03-2924197237.00ND
2021-03-2924197258.00ND
2021-11-0425719751.00ND
2022-04-2526601192.00ND
2023-05-1729053142.00ND
2023-05-1729053163.00ND
2023-05-2429053213.00ND
2023-05-2429053192.00ND
2023-08-0129447929.00ND
2023-08-0129447949.00ND
2023-08-0129447909.00ND