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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Texas A&M University Main Campus

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.

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND20ND
2014ND20ND
2015ND20ND
2016ND20ND
2017ND20ND
2018ND20ND
2019ND20ND

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
2013-07-093G10002-06ND
2013-07-093G10002-01ND
2014-01-134A14017-01AND
2014-01-134A14017-06AND
2015-02-10AC79953ND
2015-02-10AC79941ND
2016-03-22AD29881ND
2016-03-22AD29887ND
2017-03-22AD76373ND
2017-03-22AD76371ND
2018-03-02AE16475ND
2018-03-02AE16477ND
2019-01-18AE50575ND
2019-04-09AE61619ND