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EWG's Tap Water Database — 2019 UPDATE

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Chloromethane

Sunny Slope Water Company

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.

 

32

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND50ND
2013ND60ND
2014ND60ND
2015ND50ND
2016ND50ND
2017ND50ND

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
2012-03-149588-004-1000ND
2012-06-199588-012-0900ND
2012-09-129588-003-0930ND
2012-09-129588-017-0950ND
2012-11-299588-006-0945ND
2013-03-199588-004-0940ND
2013-06-269588-012-0855ND
2013-08-203H20067-01AND
2013-09-039588-017-1007ND
2013-09-039588-003-0955ND
2013-12-179588-006-0900ND
2014-02-244B24022-01AND
2014-03-039588-004-0930ND
2014-04-114D11016-01AND
2014-06-039588-012-0940ND
2014-09-169588-003-0925ND
2014-12-019588-006-0910ND
2015-03-199588-004-0910ND
2015-06-099588-012-1025ND
2015-06-099588-017-1010ND
2015-09-029588-003-0935ND
2015-12-099588-006-0910ND
2016-03-109588-004-0915ND
2016-06-089588-012-1005ND
2016-06-089588-017-1030ND
2016-09-129588-003-0930ND
2016-12-029588-006-1040ND
2017-03-069588-004-1040ND
2017-06-309588-017-1335ND
2017-06-309588-012-1310ND
2017-09-219588-003-0930ND
2017-12-289588-006-0835ND