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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Burlington 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

 

128

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND290ND
2015ND200ND
20160.0211 ppb271ND - 0.570 ppb
2017ND250ND
2018ND170ND
2019ND100ND

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 Result
2014-03-04ND
2014-03-04ND
2014-06-05ND
2014-06-05ND
2014-06-17ND
2014-07-01ND
2014-07-02ND
2014-07-03ND
2014-07-11ND
2014-07-17ND
2014-07-23ND
2014-07-29ND
2014-08-07ND
2014-08-12ND
2014-08-12ND
2014-08-22ND
2014-08-30ND
2014-09-05ND
2014-09-05ND
2014-09-05ND
2014-09-10ND
2014-09-10ND
2014-09-24ND
2014-09-24ND
2014-10-16ND
2014-11-20ND
2014-11-20ND
2014-12-08ND
2014-12-11ND
2015-01-20ND
2015-02-13ND
2015-02-24ND
2015-02-24ND
2015-03-06ND
2015-03-19ND
2015-03-19ND
2015-04-16ND
2015-05-06ND
2015-06-01ND
2015-06-02ND
2015-06-18ND
2015-07-10ND
2015-07-10ND
2015-08-04ND
2015-09-08ND
2015-10-16ND
2015-10-16ND
2015-11-05ND
2015-12-09ND
2016-01-04ND
2016-01-11ND
2016-01-11ND
2016-01-11ND
2016-01-11ND
2016-01-11ND
2016-01-11ND
2016-01-11ND
2016-01-11ND
2016-01-14ND
2016-02-08ND
2016-02-18ND
2016-02-18ND
2016-03-10ND
2016-04-01ND
2016-05-24ND
2016-05-24ND
2016-05-240.570 ppb
2016-06-03ND
2016-07-11ND
2016-07-15ND
2016-08-01ND
2016-09-26ND
2016-10-06ND
2016-10-13ND
2016-11-21ND
2016-12-23ND
2017-01-23ND
2017-02-08ND
2017-02-22ND
2017-02-22ND
2017-02-22ND
2017-02-22ND
2017-02-22ND
2017-02-22ND
2017-02-22ND
2017-02-22ND
2017-03-10ND
2017-03-17ND
2017-03-17ND
2017-04-03ND
2017-04-03ND
2017-05-25ND
2017-06-27ND
2017-07-19ND
2017-08-28ND
2017-08-28ND
2017-09-22ND
2017-10-30ND
2017-11-27ND
2017-12-04ND
2017-12-29ND
2018-01-26ND
2018-02-26ND
2018-03-14ND
2018-03-23ND
2018-04-26ND
2018-05-25ND
2018-06-26ND
2018-06-29ND
2018-07-23ND
2018-07-23ND
2018-08-23ND
2018-08-29ND
2018-09-21ND
2018-10-19ND
2018-11-16ND
2018-11-27ND
2018-12-07ND
2019-01-10ND
2019-02-05ND
2019-02-07ND
2019-02-08ND
2019-03-25ND
2019-04-11ND
2019-07-02ND
2019-09-20ND
2019-10-29ND
2019-12-23ND