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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Commerce-city, 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

 

78

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND80ND
2015ND60ND
2016ND30ND
2017ND150ND
2018ND260ND
2019ND200ND

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
2014-02-209590-014-1250ND
2014-02-209590-013-1240ND
2014-02-209590-005-1230ND
2014-08-125810-014-0848ND
2014-08-125810-013-0844ND
2014-08-125810-005-0840ND
2014-11-149590-014-1410ND
2014-11-149590-005-1415ND
2015-05-119590-005-0905ND
2015-05-119590-014-0915ND
2015-05-119590-013-0910ND
2015-12-149590-005-1515ND
2015-12-149590-014-1530ND
2015-12-149590-013-1522ND
2016-10-279590-013-1040ND
2016-12-135810-013-1026ND
2016-12-205810-013-0924ND
2017-01-245810-013-1031ND
2017-02-089590-005-1328ND
2017-02-089590-014-1337ND
2017-02-089590-013-1343ND
2017-03-285810-013-1412ND
2017-04-269590-005-1350ND
2017-04-269590-013-1356ND
2017-04-269590-014-1405ND
2017-09-019590-005-1115ND
2017-09-019590-014-1125ND
2017-09-019590-013-1120ND
2017-11-145810-013-0847ND
2017-11-219590-013-0920ND
2017-12-195810-013-1102ND
2017-12-265810-013-1015ND
2018-01-225810-013-1218ND
2018-03-275810-013-0903ND
2018-04-035810-013-0915ND
2018-04-035810-005-0907ND
2018-04-035810-014-0911ND
2018-04-109590-013-0907ND
2018-04-169590-013-0903ND
2018-06-055810-013-0844ND
2018-06-055810-005-0835ND
2018-06-125810-013-0853ND
2018-07-025810-013-0954ND
2018-07-025810-014-0957ND
2018-07-025810-005-0948ND
2018-07-105810-013-0916ND
2018-08-285810-013-1039ND
2018-09-055810-005-1534ND
2018-09-055810-014-1547ND
2018-09-055810-013-1543ND
2018-10-169590-013-0918ND
2018-12-045810-005-0911ND
2018-12-045810-014-0924ND
2018-12-045810-013-0920ND
2018-12-105810-013-0930ND
2018-12-185810-008-1030ND
2018-12-185810-013-0918ND
2018-12-275810-013-0855ND
2019-01-025810-013-1018ND
2019-01-085810-005-0946ND
2019-01-085810-014-1003ND
2019-01-085810-013-0956ND
2019-01-155810-013-0915ND
2019-01-229590-013-0952ND
2019-02-255810-013-0938ND
2019-03-055810-013-1156ND
2019-03-055810-014-1200ND
2019-03-055810-005-1205ND
2019-04-099590-014-1420ND
2019-04-099590-005-1411ND
2019-04-099590-013-1415ND
2019-04-159590-014-1509ND
2019-04-159590-013-1504ND
2019-04-159590-005-1500ND
2019-04-305810-013-0935ND
2019-05-075810-014-0914ND
2019-05-075810-013-0910ND
2019-05-075810-005-0904ND