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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Beaumont Cherry Valley WD

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.

 

63

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND130ND
2014ND230ND
2015ND20ND
2016ND120ND
2017ND10ND
2018ND30ND
2019ND90ND

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
2013-11-04B3K0231-13ND
2013-11-04B3K0231-19ND
2013-11-04B3K0231-01ND
2013-11-04B3K0231-17ND
2013-11-04B3K0231-15ND
2013-11-04B3K0231-11ND
2013-11-04B3K0231-03ND
2013-11-04B3K0231-07ND
2013-11-04B3K0231-23ND
2013-11-04B3K0231-09ND
2013-11-04B3K0231-05ND
2013-11-04B3K0231-21ND
2013-11-12B3K1053-01ND
2014-05-21B4E2100-09ND
2014-05-21B4E2100-03ND
2014-05-21B4E2100-01ND
2014-05-21B4E2100-11ND
2014-05-21B4E2100-07ND
2014-05-21B4E2100-15ND
2014-05-21B4E2100-13ND
2014-05-21B4E2100-05ND
2014-05-22B4E2255-07ND
2014-05-22B4E2255-01ND
2014-05-22B4E2255-11ND
2014-05-22B4E2255-13ND
2014-05-22B4E2255-03ND
2014-05-22B4E2255-09ND
2014-05-22B4E2255-05ND
2014-06-17B4F1685-01ND
2014-06-17B4F1685-03ND
2014-11-13B4K1304-03ND
2014-11-13B4K1304-07ND
2014-11-13B4K1304-09ND
2014-11-13B4K1304-11ND
2014-11-13B4K1304-05ND
2014-11-13B4K1304-01ND
2015-12-024790-025-0850ND
2015-12-034790-025-0952ND
2016-12-014790-020-0845ND
2016-12-014790-005-1230ND
2016-12-014790-007-1323ND
2016-12-014790-011-0818ND
2016-12-014790-012-0926ND
2016-12-014790-013-0905ND
2016-12-014790-015-1343ND
2016-12-014790-022-1017ND
2016-12-014790-023-1035ND
2016-12-014790-026-0721ND
2016-12-084790-031-0750ND
2016-12-084790-017-0841ND
2017-10-024790-006-0915ND
2018-12-134790-021-1115ND
2018-12-184790-031-1338ND
2018-12-184790-025-1038ND
2019-12-034790-013-0908ND
2019-12-034790-012-1108ND
2019-12-034790-015-0933ND
2019-12-034790-007-1422ND
2019-12-034790-020-1018ND
2019-12-044790-023-1158ND
2019-12-044790-026-0838ND
2019-12-044790-017-1010ND
2019-12-044790-022-1408ND