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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Bellflower - Somerset MWC

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

 

49

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND80ND
2015ND140ND
2016ND60ND
2017ND70ND
2018ND70ND
2019ND70ND

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
2014-04-149588-022-1046ND
2014-04-149588-026-1100ND
2014-07-239588-008-1240ND
2014-07-239588-021-1334ND
2014-07-239588-011-1400ND
2014-07-239588-027-1314ND
2014-07-239588-029-1100ND
2014-10-229588-009-1113ND
2015-01-305A30045-03AND
2015-01-305A30045-11AND
2015-01-305A30045-13AND
2015-01-305A30045-05AND
2015-01-305A30045-09AND
2015-01-305A30045-07AND
2015-02-115B11083-01AND
2015-04-159588-026-1026ND
2015-04-159588-022-0936ND
2015-07-089588-027-1046ND
2015-07-089588-021-1100ND
2015-07-089588-008-1030ND
2015-07-109588-029-1014ND
2015-10-279588-009-0936ND
2016-06-179588-022-0935ND
2016-06-179588-026-1122ND
2016-07-149588-029-0940ND
2016-07-149588-008-1025ND
2016-07-149588-021-1100ND
2016-10-109588-009-1044ND
2017-05-099588-022-1015ND
2017-05-099588-026-1120ND
2017-07-119588-029-0930ND
2017-07-119588-021-1050ND
2017-10-199588-008-1020ND
2017-10-199588-027-1005ND
2017-10-199588-009-0940ND
2018-04-169588-022-1012ND
2018-04-169588-026-1044ND
2018-07-269588-021-1035ND
2018-07-269588-029-0913ND
2018-10-299588-009-1045ND
2018-10-299588-008-1000ND
2018-11-139588-027-0950ND
2019-05-089588-022-0935ND
2019-05-089588-026-1025ND
2019-07-319588-029-1025ND
2019-07-319588-021-1015ND
2019-10-179588-009-1008ND
2019-10-179588-027-1045ND
2019-10-179588-008-1120ND