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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Epcor Water - Agua Fria

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.

 

28

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND280ND
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A

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
2013-03-112791424ND
2013-03-122792086ND
2013-03-122792068ND
2013-03-122792046ND
2013-03-122791976ND
2013-03-132792956ND
2013-03-132793864ND
2013-03-132793125ND
2013-03-192795772ND
2013-06-1322922601ND
2013-06-1322599901ND
2013-06-1322599701ND
2013-06-1422600101ND
2013-06-1422600001ND
2013-09-1023380401ND
2013-09-1023380201ND
2013-09-1023380301ND
2013-09-1123380601ND
2013-09-1123380901ND
2013-09-1123380801ND
2013-09-1223380701ND
2013-09-1223380501ND
2013-09-1223381001ND
2013-12-0524236801ND
2013-12-0524236601ND
2013-12-1024236501ND
2013-12-1024236701ND
2013-12-1024236901ND