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EWG's Tap Water Database — 2019 UPDATE

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Monochlorobenzene (chlorobenzene)

Pennsylvania American Royersford

Monochlorobenzene is used as a solvent for pesticides, a degreasing agent and an intermediate for manufacturing other chemicals. It causes liver and kidney damage in studies of laboratory animals.

 

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 70 ppb

The EWG Health Guideline of 70 ppb for monochlorobenzene 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) 100 ppb

The legal limit for monochlorobenzene, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1960s.

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
2015-01-0812283041ND
2015-01-0812283020ND
2015-04-0912628861ND
2015-04-0912628882ND
2015-04-0912628926ND
2015-04-0912628903ND
2015-07-1313008742ND
2015-09-1613260268ND
2015-10-0613385329ND
2015-10-0613385308ND
2016-04-0514097865ND
2016-04-0514097823ND
2016-04-0514097888ND
2016-04-0514097844ND
2017-04-1115931633ND
2017-04-1115931570ND
2017-04-1115931656ND
2017-04-1115931591ND
2017-04-1115931612ND