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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Vaughn WC Inc

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.

 

40

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND260ND
2015N/A00N/A
2016ND60ND
2017ND20ND
2018N/A00N/A
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
2014-05-13A4D1995-31AND
2014-05-13A4D1995-16AND
2014-05-13A4D1995-28AND
2014-05-13A4D1995-22AND
2014-05-13A4D1995-19AND
2014-05-13A4D1995-25AND
2014-05-13A4D1995-04AND
2014-05-13A4D1995-01AND
2014-05-13A4D1995-10AND
2014-05-13A4D1995-13AND
2014-05-13A4D1995-07AND
2014-05-13A4D1995-34AND
2014-07-315867-050-1400ND
2014-08-275867-046-1040ND
2014-11-18A4J2581-01AND
2014-11-18A4J2581-07AND
2014-11-18A4J2581-04AND
2014-11-18A4J2581-25AND
2014-11-18A4J2581-10AND
2014-11-18A4J2581-31AND
2014-11-18A4J2581-34AND
2014-11-18A4J2581-16AND
2014-11-18A4J2581-22AND
2014-11-18A4J2581-19AND
2014-11-18A4J2581-28AND
2014-12-18A4K1782-09AND
2016-06-295867-035-1200ND
2016-06-295867-026-1120ND
2016-07-275867-027-1230ND
2016-07-275867-020-1130ND
2016-08-315867-018-1100ND
2016-09-295867-048-1325ND
2017-06-225867-046-1035ND
2017-06-225867-050-1000ND
2019-03-195867-048-1010ND
2019-03-195867-020-1150ND
2019-04-255867-026-1350ND
2019-04-255867-018-1255ND
2019-05-285867-035-1140ND
2019-06-185867-027-1450ND