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EWG's Tap Water Database — 2019 UPDATE

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Monochlorobenzene (chlorobenzene)

Hastings

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.

 

11

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND10ND
2013ND40ND
2014N/A00N/A
2015ND10ND
2016ND50ND
2017N/A00N/A

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
2012-07-2412G2046-02ND
2013-05-3013E2546-01ND
2013-05-3013E2548-01ND
2013-05-3013E2549-02ND
2013-05-3013E2549-03ND
2015-06-0915F0596-03ND
2016-03-223418445ND
2016-03-223418465ND
2016-03-223418503ND
2016-03-223418533ND
2016-03-223418541ND