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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Park Ridge Water Department

Chloromethane is an industrial solvent, aerosol propellant and a refrigerant. It also forms as a byproduct of water disinfection. The EPA classifies chloromethane as possibly carcinogenic to humans.

 

49

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND430ND
2015ND60ND
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 2.69 ppb

The EWG Health Guideline of 2.69 ppb for chloromethane was defined by the Environmental Protection Agency as a benchmark for testing under the Unregulated Contaminant Monitoring Rule program. This health guideline protects against cancer.

ppb = parts per billion

All test results

Date Lab ID Result
2014-02-194020380-12ND
2014-02-194020380-11ND
2014-02-194020380-04ND
2014-02-194020380-05ND
2014-02-194020380-08ND
2014-02-194020380-03ND
2014-02-194020380-10ND
2014-02-194020380-07ND
2014-02-194020380-02ND
2014-02-194020380-09ND
2014-02-194020380-01ND
2014-02-194020380-06ND
2014-02-194020380-13ND
2014-05-074050321-08ND
2014-05-074050321-07ND
2014-05-074050321-06ND
2014-05-074050322-01ND
2014-05-074050321-05ND
2014-05-074050321-04ND
2014-05-074050321-03ND
2014-05-074050321-02ND
2014-05-074050321-09ND
2014-05-074050321-01ND
2014-08-134080458-08ND
2014-08-134080458-01ND
2014-08-134080458-10ND
2014-08-134080458-07ND
2014-08-134080458-09ND
2014-08-134080458-06ND
2014-08-134080458-05ND
2014-08-134080458-02ND
2014-08-134080458-04ND
2014-08-134080458-03ND
2014-11-124110379-03ND
2014-11-124110379-01ND
2014-11-124110379-02ND
2014-11-124110379-07ND
2014-11-124110379-09ND
2014-11-124110379-04ND
2014-11-124110379-05ND
2014-11-124110379-08ND
2014-11-124110379-06ND
2014-12-052043632001ND
2015-05-202073024004ND
2015-05-202073025001ND
2015-05-202073024001ND
2015-05-202073022003ND
2015-05-202073023001ND
2015-05-262072992001ND