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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Florin County Water District

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

 

41

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND160ND
2015ND180ND
2016N/A00N/A
2017N/A00N/A
2018ND60ND
2019ND10ND

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
2014-04-305810-002-1017ND
2014-04-305810-003-0927ND
2014-04-305810-004-1054ND
2014-04-305810-006-1241ND
2014-04-305810-007-0841ND
2014-04-305810-009-1200ND
2014-05-21106918PND
2014-05-21106915PND
2014-05-21106919PND
2014-05-21106920PND
2014-05-21106922PND
2014-08-075810-010-1305ND
2014-11-19109647PND
2014-11-19109649PND
2014-11-19109650PND
2014-11-19109651PND
2015-02-115810-007-0906ND
2015-02-115810-009-1216ND
2015-02-115810-006-1402ND
2015-02-115810-010-1305ND
2015-02-115810-004-1115ND
2015-02-115810-012-0948ND
2015-05-06110958RND
2015-05-275810-003-1012ND
2015-05-275810-012-0923ND
2015-05-275810-004-1053ND
2015-05-275810-009-1159ND
2015-05-275810-006-1258ND
2015-09-235810-007-0932ND
2015-09-235810-003-1044ND
2015-09-235810-004-1147ND
2015-09-235810-006-1336ND
2015-09-235810-009-1247ND
2015-09-235810-012-1009ND
2018-05-085810-009-0944ND
2018-06-145810-012-0950ND
2018-06-145810-006-1316ND
2018-06-145810-007-0916ND
2018-06-145810-003-1028ND
2018-06-145810-010-1209ND
2019-12-125810-008-1405ND