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EWG's Tap Water Database — 2019 UPDATE

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o-Dichlorobenzene

Pennsylvania American Royersford

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.

 

32

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013ND20ND
2014ND90ND
2015ND100ND
2016ND40ND
2017ND50ND

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
2012-02-0816353301ND
2012-02-0816353901ND
2013-04-2321984601ND
2013-04-2321984701ND
2014-04-0225340001ND
2014-04-0225341501ND
2014-04-0325340301ND
2014-04-0325340801ND
2014-06-2525340501ND
2014-08-0626818001ND
2014-08-0626818101ND
2014-10-0627104001ND
2014-10-0627103901ND
2015-01-0812283056ND
2015-01-0812283035ND
2015-04-0912628876ND
2015-04-0912628897ND
2015-04-0912628941ND
2015-04-0912628918ND
2015-07-1313008757ND
2015-09-1613260283ND
2015-10-0613385344ND
2015-10-0613385323ND
2016-04-0514097880ND
2016-04-0514097838ND
2016-04-0514097903ND
2016-04-0514097859ND
2017-04-1115931648ND
2017-04-1115931585ND
2017-04-1115931671ND
2017-04-1115931606ND
2017-04-1115931627ND