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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Clinton 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.

MORE ABOUT THIS CONTAMINANT

 

72

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND80ND
2014ND210ND
2015ND50ND
2016ND50ND
2017ND160ND
2018ND90ND
2019ND80ND

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
2013-09-11744363-9719ND
2013-09-11744349-9726ND
2013-09-11744341-9719ND
2013-09-11744353-9726ND
2013-09-11744351-9726ND
2013-09-11744361-9719ND
2013-09-11744359-9719ND
2013-09-11744357-9719ND
2014-03-06L4860892-2ND
2014-03-11774314-10910ND
2014-03-11774312-10910ND
2014-03-11774316-10910ND
2014-03-11774324-10920ND
2014-03-11774320-10920ND
2014-03-11774294-10910ND
2014-03-11774318-10910ND
2014-03-11774322-10920ND
2014-04-10L4974293-2ND
2014-04-24L4974287-7ND
2014-04-24L4974287-2ND
2014-04-24L4974286-1ND
2014-04-24L4974287-3ND
2014-06-26L3999573-1ND
2014-06-26L3999573-5ND
2014-07-17L5104770-2ND
2014-08-08L3595937-1ND
2014-08-08L3595937-5ND
2014-10-15L5241379-2ND
2014-12-18L5365933-1ND
2015-01-30L5357605-2ND
2015-04-09L5490680-2ND
2015-06-25L5490684-1ND
2015-07-08L5640110-2ND
2015-10-08L5809030-2ND
2016-01-05L5969345-2ND
2016-04-07L6131558-2ND
2016-05-27L6131554-1ND
2016-07-28L6317571-2ND
2016-10-06L6468952-2ND
2017-01-05L6599908-2ND
2017-03-01L6674387-1ND
2017-04-06L6722844-2ND
2017-06-14L6799987-1ND
2017-06-20L6722847-6ND
2017-06-28L6722851-3ND
2017-07-20L6857745-2ND
2017-08-29L6943960-1ND
2017-08-29L6943961-1ND
2017-08-29L6939418-1ND
2017-10-05L6951684-2ND
2017-11-14L6970556-3ND
2017-11-15L6972578-3ND
2017-11-15L6972577-3ND
2017-11-16L6950362-1ND
2017-12-12L6972413-1ND
2018-01-11L6983399-2ND
2018-02-268024443-01ND
2018-04-05L7009645-2ND
2018-05-21L7009649-1ND
2018-06-04L7027496-1ND
2018-07-05L7041219-2ND
2018-09-25L7063659-1ND
2018-10-05L7071836-2ND
2018-12-05L7085584-1ND
2019-01-10L7090652-2ND
2019-03-05L7104994-1ND
2019-06-06L7111576-2ND
2019-06-11L7125440-1ND
2019-06-19L7111574-1ND
2019-09-26L7134453-2ND
2019-12-06L7160155-2ND
2019-12-12L7173219-1ND