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EWG's Tap Water Database — 2019 UPDATE

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Chloromethane

California Water Service (CWS) - Salinas

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.

 

89

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND230ND
2013ND120ND
2014ND410ND
2015ND20ND
2016ND30ND
2017ND80ND

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
2012-10-109590-118-1130ND
2012-10-109590-096-1052ND
2012-10-109590-084-1103ND
2012-10-109590-097-1059ND
2012-10-109590-081-1055ND
2012-10-109590-107-1116ND
2012-10-109590-110-1113ND
2012-10-109590-010-1045ND
2012-10-109590-111-1120ND
2012-10-109590-115-1128ND
2012-10-109590-114-1124ND
2012-12-199590-096-1415ND
2012-12-199590-115-1500ND
2012-12-199590-081-1440ND
2012-12-199590-097-1420ND
2012-12-199590-118-1435ND
2012-12-199590-111-1455ND
2012-12-199590-084-1445ND
2012-12-199590-107-1450ND
2012-12-199590-019-1130ND
2012-12-199590-114-1430ND
2012-12-199590-010-1410ND
2012-12-199590-110-1425ND
2013-04-179590-096-1050ND
2013-04-179590-081-1104ND
2013-04-179590-097-1052ND
2013-04-179590-115-1107ND
2013-04-179590-114-1054ND
2013-04-179590-107-1106ND
2013-04-179590-110-1109ND
2013-04-179590-111-1100ND
2013-04-179590-084-1057ND
2013-04-179590-118-1110ND
2013-04-179590-010-1046ND
2013-10-299590-039-1405ND
2014-04-02201404030346AMND
2014-04-02201404030381AMND
2014-04-03201404040298AMND
2014-04-08201404090686AMND
2014-04-09201404100793AMND
2014-04-09201404100824AMND
2014-04-09201404120176AMND
2014-04-10201404120074AMND
2014-04-10201404120136AMND
2014-04-10201404150245AMND
2014-04-10201404120141AMND
2014-04-10201404120154AMND
2014-04-16201404190042AMND
2014-04-16201404190071AMND
2014-04-17201404190053AMND
2014-04-17201404190062AMND
2014-04-22201404230388AMND
2014-04-24201404250182AMND
2014-04-29201404300782AMND
2014-05-29201405300256AMND
2014-08-145810-019-1450ND
2014-09-039590-030-1105ND
2014-09-09201409100991AMND
2014-09-09201409100978AMND
2014-09-10201409110896AMND
2014-09-10201409110694AMND
2014-09-11201409120747AMND
2014-09-11201409120734AMND
2014-09-15201409160393AMND
2014-09-16201409170785AMND
2014-09-16201409170675AMND
2014-09-16201409170649AMND
2014-09-16201409180650AMND
2014-09-179590-028-1441ND
2014-09-189590-028-1435ND
2014-09-19201409230181AMND
2014-09-25201409260404AMND
2014-09-25201409260415AMND
2014-09-25201409260433AMND
2014-09-25201409260424AMND
2014-10-149590-019-1032ND
2015-05-059590-019-1205ND
2015-10-219590-043-1432ND
2016-10-269590-041-0917ND
2016-10-279590-022-0917ND
2016-10-279590-029-0959ND
2017-03-029590-132-1100ND
2017-03-285810-131-1026ND
2017-07-209590-041-1200ND
2017-07-209590-022-1115ND
2017-11-299590-008-1409ND
2017-11-299590-131-1104ND
2017-11-299590-030-1454ND
2017-11-299590-005-1431ND