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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Bristol Water Department

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
2014ND140ND
2015ND40ND
2016ND40ND
2017ND40ND
2018ND40ND
2019ND40ND

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
2014-01-06201401070092AMND
2014-01-06201401070098AMND
2014-01-06201401070094AMND
2014-01-06201401070100AMND
2014-01-10E401597-2VOCND
2014-01-10E401597-3VOCND
2014-01-10E401597-4VOCND
2014-01-10E401597-1VOCND
2014-04-02201404030420AMND
2014-07-07201407090847AMND
2014-07-07201407080383AMND
2014-07-07201407080354AMND
2014-07-07201407080356AMND
2014-10-06201410070315AMND
2015-03-09E503529-1VOCND
2015-03-09E503529-4VOCND
2015-03-09E503529-3VOCND
2015-03-09E503529-2VOCND
2016-03-11E603B92-1VOCND
2016-03-11E603B92-4VOCND
2016-03-11E603B92-3VOCND
2016-03-11E603B92-2VOCND
2017-05-04D7E0514-03VOCND
2017-05-04D7E0514-01VOCND
2017-05-04D7E0514-02VOCND
2017-05-04D7E0514-04VOCND
2018-01-10D8A0568-02VOCND
2018-01-10D8A0568-03VOCND
2018-01-10D8A0568-04VOCND
2018-01-10D8A0568-01VOCND
2019-10-28D9J2584-02VOCND
2019-10-28D9J2584-03VOCND
2019-10-28D9J2584-04VOCND
2019-10-28D9J2584-01VOCND