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EWG's Tap Water Database — 2021 UPDATE

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Monochlorobenzene (chlorobenzene)

Seminole County Northwest

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.

MORE ABOUT THIS CONTAMINANT

 

87

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND140ND
2015ND40ND
2016ND110ND
2017ND130ND
2018ND250ND
2019ND200ND

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
2014-01-07ND
2014-02-04ND
2014-02-04ND
2014-02-05ND
2014-03-03ND
2014-04-01ND
2014-05-05ND
2014-06-03ND
2014-07-10ND
2014-08-07ND
2014-09-10ND
2014-10-15ND
2014-11-04ND
2014-12-09ND
2015-01-08ND
2015-02-12ND
2015-11-17ND
2015-12-09ND
2016-01-12ND
2016-02-10ND
2016-03-09ND
2016-04-04ND
2016-05-09ND
2016-06-13ND
2016-07-11ND
2016-08-11ND
2016-10-18ND
2016-11-10ND
2016-12-13ND
2017-01-12ND
2017-02-06ND
2017-02-16ND
2017-03-09ND
2017-04-13ND
2017-05-04ND
2017-06-05ND
2017-07-17ND
2017-08-08ND
2017-09-18ND
2017-10-18ND
2017-11-06ND
2017-12-07ND
2018-01-10ND
2018-02-08ND
2018-03-08ND
2018-04-09ND
2018-05-08ND
2018-06-06ND
2018-07-11ND
2018-08-07ND
2018-08-07ND
2018-08-07ND
2018-09-13ND
2018-09-13ND
2018-09-13ND
2018-09-13ND
2018-10-08ND
2018-10-08ND
2018-10-08ND
2018-10-08ND
2018-11-06ND
2018-11-06ND
2018-11-06ND
2018-11-06ND
2018-11-06ND
2018-12-04ND
2018-12-04ND
2019-01-09ND
2019-02-07ND
2019-03-14ND
2019-03-14ND
2019-04-04ND
2019-04-04ND
2019-04-04ND
2019-04-04ND
2019-05-08ND
2019-06-12ND
2019-06-12ND
2019-06-12ND
2019-07-02ND
2019-08-08ND
2019-08-08ND
2019-09-11ND
2019-10-16ND
2019-11-07ND
2019-12-12ND
2019-12-12ND