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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Northeast Alabama Water System

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

 

46

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.00870 ppb231ND - 0.200 ppb
2015ND90ND
2016ND20ND
2017ND30ND
2018ND30ND
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
2014-05-06AC69048ND
2014-06-1230460450.200 ppb
2014-06-123045977ND
2014-06-123046024ND
2014-06-123045963ND
2014-06-133045996ND
2014-06-133045950ND
2014-06-133046011ND
2014-09-153106716ND
2014-09-153106422ND
2014-09-153106640ND
2014-09-163106362ND
2014-09-163106389ND
2014-09-163106649ND
2014-11-19AC90357ND
2014-11-20AC90350ND
2014-12-163158439ND
2014-12-163158344ND
2014-12-163158403ND
2014-12-163158394ND
2014-12-163158335ND
2014-12-163158427ND
2014-12-163158418ND
2015-03-123207162ND
2015-03-123207093ND
2015-03-123207115ND
2015-03-123207183ND
2015-03-123207276ND
2015-03-123207135ND
2015-06-08AD11194ND
2015-11-18AD28925ND
2015-11-18AD28921ND
2016-05-161606274-1ND
2016-11-081614271-2ND
2017-05-221707192-2ND
2017-05-22170192-02ND
2017-12-111717278-2ND
2018-06-061807603-02ND
2018-06-061807603-2ND
2018-12-12L1053121-02ND
2019-06-19L1111029-01ND
2019-07-30L1124324-01AND
2019-07-30L1124324-01ND
2019-09-10L1138015-01ND
2019-11-05L1157833-01ND
2019-11-13L1160742-01ND