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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Aquarion Water Company of Connecticut - Simsbury 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

 

91

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND120ND
2014ND140ND
2015ND130ND
2016ND130ND
2017ND130ND
2018ND120ND
2019ND140ND

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
2013-06-06201306070271AMND
2013-06-06201306070171AMND
2013-06-06201306070252AMND
2013-06-06201306070094AMND
2013-06-06201306070150AMND
2013-06-06201306070152AMND
2013-12-04201312050159AMND
2013-12-04201312050285AMND
2013-12-04201312050155AMND
2013-12-04201312050185AMND
2013-12-04201312050291AMND
2013-12-04201312050176AMND
2014-02-04201401677-VOC1ND
2014-02-07201401908-VOC1ND
2014-05-07201406324-VOC1ND
2014-05-07201406328-VOC1ND
2014-05-07201406331-VOC1ND
2014-05-07201406333-VOC1ND
2014-05-07201406335-VOC1ND
2014-05-07201406338-VOC1ND
2014-05-072014427241-VOC1ND
2014-08-08201411392-VOC1ND
2014-08-14201411867-VOC1ND
2014-11-11201417230-VOC1ND
2014-11-20201417781-VOC1ND
2014-12-04201418312-VOC1ND
2015-02-06201501765-VOC1ND
2015-02-19201502317-VOC1ND
2015-05-07201505805-VOC1ND
2015-05-07201505815-VOC1ND
2015-05-07201505809-VOC1ND
2015-05-07201505811-VOC1ND
2015-05-07201505813-VOC1ND
2015-05-12201506049-VOC1ND
2015-05-21201506522-VOC1ND
2015-08-05201510663-VOC1ND
2015-08-19201511753-VOC1ND
2015-11-04201515891-VOC1ND
2015-11-10201516225-VOC1ND
2016-02-03201601684-VOC1ND
2016-02-10201602061-VOC1ND
2016-05-04201605678-VOC1ND
2016-05-04201605688-VOC1ND
2016-05-04201605682-VOC1ND
2016-05-04201605684-VOC1ND
2016-05-04201605686-VOC1ND
2016-05-04201605691-VOC1ND
2016-05-12201606183-VOC1ND
2016-08-03201610124-VOC1ND
2016-08-17201610953-VOC1ND
2016-11-04201615626-VOC1ND
2016-11-11201616251-VOC1ND
2017-02-08201702275-VOC1ND
2017-02-08201702268-VOC1ND
2017-02-08201702277-VOC1ND
2017-02-08201702273-VOC1ND
2017-02-08201702280-VOC1ND
2017-02-16201702710-VOC1ND
2017-03-08201703617-VOC1ND
2017-05-03201706394-VOC1ND
2017-05-11201706951-VOC1ND
2017-08-03201711907-VOC1ND
2017-08-17201712932-VOC1ND
2017-11-02201717254-VOC1ND
2017-11-09201717694-VOC1ND
2018-02-08201801800-VOC1ND
2018-02-08201801804-VOC1ND
2018-04-04201804071-VOC1ND
2018-04-04201804077-VOC1ND
2018-04-04201804073-VOC1ND
2018-04-04201804075-VOC1ND
2018-04-04201804080-VOC1ND
2018-05-03201806044-VOC1ND
2018-05-08201806393-VOC1ND
2018-08-09201812047-VOC1ND
2018-11-07201817345-VOC1ND
2018-11-07201817335-VOC1ND
2019-02-05201901699-VOC1ND
2019-02-05201901703-VOC1ND
2019-03-06201902893-VOC1ND
2019-03-06201902902-VOC1ND
2019-03-06201902905-VOC1ND
2019-03-06201902900-VOC1ND
2019-03-06201902898-VOC1ND
2019-03-06201902896-VOC1ND
2019-05-09201906438-VOC1ND
2019-05-09201906456-VOC1ND
2019-08-07201912408-VOC1ND
2019-08-14201912905-VOC1ND
2019-11-06201918268-VOC1ND
2019-11-14201918766-VOC1ND