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EWG's Tap Water Database — 2021 UPDATE

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Monochlorobenzene (chlorobenzene)

United Water Pa Mechanicsburg

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.

 

38

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND60ND
2015ND90ND
2016ND70ND
2017ND50ND
2018ND50ND
2019ND60ND

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
2014-02-121071699003ND
2014-02-121071699001ND
2014-04-152001635001ND
2014-04-152001635002ND
2014-07-072016172003ND
2014-10-092033532001ND
2015-02-0312479183ND
2015-02-0312479138ND
2015-05-1112841435ND
2015-05-1112841458ND
2015-07-0712974652ND
2015-07-0712974673ND
2015-10-0713475177ND
2015-10-0713475156ND
2015-10-0713475200ND
2016-01-1313834600ND
2016-01-1313834577ND
2016-01-1313834621ND
2016-04-1914206398ND
2016-08-1014857571ND
2016-08-1014857592ND
2016-11-1015326803ND
2017-02-0715752200ND
2017-02-1415752244ND
2017-05-0216208300ND
2017-08-0116520093ND
2017-10-1016981630ND
2018-02-232297488001ND
2018-02-232297488002ND
2018-05-011810634-01ND
2018-08-071821380-01ND
2018-11-123000062001ND
2019-01-15H9A0708-01ND
2019-01-15H9A0708-02ND
2019-04-10H9D0711-01ND
2019-08-06H9H0636-01ND
2019-08-07H9H0668-01ND
2019-11-05H9K0519-01ND