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EWG's Tap Water Database — 2021 UPDATE

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o-Dichlorobenzene

Oblates of St. Francis

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015ND40ND
2016ND10ND
2017ND10ND
2018N/A00N/A
2019N/A00N/A

ppb = parts per billion

State and national drinking water standards and health guidelines

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
2014-02-251071359_01_03819ND
2014-04-041071359_01_04372ND
2014-07-111071359_01_00013ND
2014-11-031071359_01_00166ND
2015-01-151071359_01_00220ND
2015-05-14E15003550001ND
2015-07-01E16000018001ND
2015-10-01E16001420001ND
2016-03-23E16003505001ND
2017-06-09E17004877001ND