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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

City of Waxahachie

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.

 

21

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND50ND
2015ND80ND
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
2014-03-19Q1408832010ND
2014-06-04Q1419411005ND
2014-07-31Q1432876007ND
2014-10-20Q1452991001ND
2014-10-20Q1452991003ND
2015-01-22Q1502230003ND
2015-01-22Q1502230001ND
2015-04-23Q1515119003ND
2015-04-23Q1515119001ND
2015-04-27Q1515456001ND
2015-07-23Q1528705001ND
2015-07-27Q1528849003ND
2015-07-27Q1528849001ND
2016-01-21Q1602735001ND
2016-09-01Q1635064002ND
2017-04-12Q1715005008ND
2017-07-10Q1727841006ND
2018-01-25Q1802982010ND
2018-08-13Q1832216003ND
2019-04-29Q1916965011ND
2019-07-25Q1947719001ND