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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

City of Crowley

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.

MORE ABOUT THIS CONTAMINANT

 

34

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.0217 ppb181ND - 0.391 ppb
2015ND80ND
2016ND50ND
2017ND30ND
2018ND50ND
2019ND70ND

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
2014-01-16Q1401457007ND
2014-01-16Q1401457004ND
2014-04-09Q1411248017ND
2014-04-09Q1411248009ND
2014-04-09Q1411248013ND
2014-04-09Q1411248001ND
2014-04-09Q14112480210.391 ppb
2014-04-09Q1411248025ND
2014-04-09Q1411248005ND
2014-05-14Q1416354007ND
2014-07-09Q1426470001ND
2014-10-22Q1453398013ND
2014-10-22Q1453398017ND
2014-10-22Q1453398009ND
2014-10-22Q1453398005ND
2014-10-22Q1453398025ND
2014-10-22Q1453398021ND
2014-10-22Q1453398001ND
2015-01-21Q1501708001ND
2015-02-10Q1505176001ND
2015-02-10Q1505176004ND
2015-02-10Q1505176006ND
2015-02-10Q1505176010ND
2015-03-25Q1511110007ND
2015-03-25Q1511110001ND
2015-10-15Q1540589006ND
2016-01-19Q1601990002ND
2016-01-19Q1601990007ND
2016-04-25Q1615996004ND
2016-04-25Q1615996006ND
2016-04-25Q1615996002ND
2017-05-23Q1721071004ND
2017-05-23Q1721071001ND
2017-08-08Q1733369001ND