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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

City of Seagraves

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.

 

9

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND10ND
2015ND20ND
2016ND20ND
2017ND20ND
2018ND10ND
2019ND10ND

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
2014-06-10Q1420198001ND
2015-04-16Q1514480002ND
2015-04-16Q1514480004ND
2016-01-25Q1603205002ND
2016-01-25Q1603205003ND
2017-01-12Q1701744003ND
2017-01-12Q1701744014ND
2018-02-08Q1805336002ND
2019-01-09Q1901016003ND