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EWG's Tap Water Database — 2019 UPDATE

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Monochlorobenzene (chlorobenzene)

Holliston Water Department

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.

 

27

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
2013N/A00N/A
2014ND90ND
2015ND60ND
2016ND60ND
2017ND60ND

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 Result
2014-03-12ND
2014-06-12ND
2014-06-12ND
2014-06-16ND
2014-06-16ND
2014-06-16ND
2014-06-16ND
2014-09-09ND
2014-11-04ND
2015-05-05ND
2015-05-05ND
2015-05-12ND
2015-05-19ND
2015-05-19ND
2015-05-19ND
2016-05-03ND
2016-05-03ND
2016-05-03ND
2016-05-03ND
2016-05-24ND
2016-05-24ND
2017-05-16ND
2017-05-16ND
2017-05-16ND
2017-05-16ND
2017-05-16ND
2017-05-16ND