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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Kinneloa Irrigation 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

 

36

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND70ND
2015ND60ND
2016ND60ND
2017ND60ND
2018ND50ND
2019ND60ND

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
2014-04-079588-015-0920ND
2014-04-079588-009-0900ND
2014-04-079588-008-0930ND
2014-04-079588-007-1005ND
2014-04-079588-005-0950ND
2014-04-079588-003-0910ND
2014-04-079588-002-0940ND
2015-04-099588-002-0955ND
2015-04-099588-003-0935ND
2015-04-099588-005-1005ND
2015-04-099588-015-1020ND
2015-04-099588-007-0945ND
2015-04-099588-009-0925ND
2016-04-189588-002-0950ND
2016-04-189588-015-0940ND
2016-04-189588-009-0905ND
2016-04-189588-003-0915ND
2016-04-189588-007-0930ND
2016-04-189588-005-1005ND
2017-04-109588-015-0925ND
2017-04-109588-002-0930ND
2017-04-109588-003-0910ND
2017-04-109588-007-0915ND
2017-04-109588-005-0940ND
2017-04-109588-009-0900ND
2018-04-179588-005-0950ND
2018-04-179588-009-0910ND
2018-04-179588-015-0935ND
2018-04-179588-003-0915ND
2018-04-179588-007-0925ND
2019-02-049588-002-0900ND
2019-04-049588-009-1035ND
2019-04-049588-015-1100ND
2019-04-049588-003-1045ND
2019-04-049588-005-1145ND
2019-04-049588-007-1120ND