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EWG's Tap Water Database — 2019 UPDATE

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o-Dichlorobenzene

Harris County MUD 165

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.

 

17

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013ND20ND
2014ND20ND
2015ND70ND
2016ND30ND
2017ND30ND

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
2013-06-13AC22099ND
2013-06-13AC22097ND
2014-07-16AC59847ND
2014-07-16AC59843ND
2015-05-27AC93425ND
2015-05-27AC93397ND
2015-05-27AC93395ND
2015-09-09AD06257ND
2015-09-09AD06255ND
2015-11-10AD13188ND
2015-11-10AD13186ND
2016-03-21AD29673ND
2016-03-21AD29633ND
2016-03-21AD29639ND
2017-05-04AD82785ND
2017-05-04AD82787ND
2017-05-04AD82793ND