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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

North Kingstown

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.

MORE ABOUT THIS CONTAMINANT

 

66

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND90ND
2014ND200ND
2015ND50ND
2016ND50ND
2017ND170ND
2018ND50ND
2019ND50ND

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
2013-07-113G15066-01AND
2013-07-113G15066-03AND
2013-07-173G18054-01AND
2013-07-173G18054-03AND
2013-07-173G18054-05AND
2013-07-173G18054-07AND
2013-07-243G25023-01AND
2013-07-243G25023-03AND
2013-08-213H22036-01AND
2014-01-274A28050-07AND
2014-01-274A28050-01AND
2014-01-274A28050-05AND
2014-01-274A28050-03AND
2014-01-294A30015-01AND
2014-01-294A30015-03AND
2014-01-294A30015-05AND
2014-01-304A31013-05AND
2014-01-304A31013-01AND
2014-03-241401936-08_TO12ND
2014-03-241401936-09_TO12ND
2014-03-241401936-05_TO12ND
2014-03-241401936-07_TO12ND
2014-03-241401936-06_TO12ND
2014-04-221402398-01_TO12ND
2014-06-061403038-01_TO12ND
2014-08-251404689-06_TO12ND
2014-08-251404689-07_TO12ND
2014-08-251404689-08_TO12ND
2014-11-101405628-03_TO12ND
2015-03-231501619-10_TO12ND
2015-04-281502000-01_TO12ND
2015-09-211504185-02_TO12ND
2015-09-211504185-01_TO12ND
2015-12-211505046-01_TO12ND
2016-03-141601471-08_TO12ND
2016-04-271601980-01_TO12ND
2016-09-291604816-01_TO12ND
2016-09-291604816-03_TO12ND
2016-12-121605537-01_TO12ND
2017-03-271701637-05_TO12ND
2017-03-271701637-06_TO12ND
2017-03-271701637-04_TO12ND
2017-03-271701637-03_TO12ND
2017-03-271701637-02_TO12ND
2017-04-251701959-02_TO12ND
2017-04-251701959-03_TO12ND
2017-06-201702744-01_TO12ND
2017-08-211703965-05_TO12ND
2017-08-211703965-04_TO12ND
2017-08-211703965-08_TO12ND
2017-11-071704908-03_TO12ND
2017-12-071712180-01_TO12ND
2017-12-081712236-01_TO12ND
2017-12-201712459-01_TO12ND
2017-12-211712495-02_TO12ND
2017-12-211712495-01_TO12ND
2018-03-271801525-10_TO12ND
2018-04-231801812-01_TO12ND
2018-09-241804186-03_TO12ND
2018-09-241804186-02_TO12ND
2018-12-121804955-01_TO12ND
2019-03-141901345-07_TO12ND
2019-04-251901817-02_TO12ND
2019-09-111904187-04_TO12ND
2019-09-111904187-03_TO12ND
2019-12-191905187-01_TO12ND