Know Your Environment. Protect Your Health.

o-Dichlorobenzene

City of Leon Valley

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.

 

47

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

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

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
2018-01-23AE09914ND
2018-03-02AE16656ND
2018-04-26AE24190ND
2018-04-26AE24188ND
2018-08-17AE37649ND
2018-08-17AE37653ND
2018-10-26AE44764ND
2018-10-26AE44766ND
2019-03-01AE56915ND
2019-03-01AE56919ND
2019-04-25AE63758ND
2019-07-19AE75356ND
2019-07-19AE75358ND
2019-10-09AE86133ND
2019-10-09AE86135ND
2020-01-30AE96323ND
2020-03-25AF04528ND
2020-04-09AF06303ND
2020-04-09AF06305ND
2020-07-08AF18899ND
2020-07-08AF18901ND
2020-11-02AF32838ND
2020-11-02AF32840ND
2021-01-14AF39552ND
2021-01-14AF39558ND
2021-04-01AF48854ND
2021-05-13AF53869ND
2021-08-03AF64491ND
2021-08-03AF64493ND
2021-12-09AF78497ND
2021-12-09AF78505ND
2022-02-14AF84680ND
2022-02-14AF84682ND
2022-04-28AF94837ND
2022-04-28AF94841ND
2022-07-15AG04971ND
2022-07-15AG04973ND
2022-10-18AG17425ND
2022-10-18AG17427ND
2023-02-17AG29691ND
2023-02-17AG29695ND
2023-04-21AG37706ND
2023-04-21AG37738ND
2023-08-14AG52400ND
2023-08-14AG52408ND
2023-10-06AG58929ND
2023-10-06AG58931ND