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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Manchester 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

 

114

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND320ND
2015ND160ND
2016ND160ND
2017ND170ND
2018ND170ND
2019ND160ND

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
2014-01-27AA64016-VOC1ND
2014-01-27AA64021-VOC1ND
2014-01-27AA64022-VOC1ND
2014-01-28AA64040-VOC1ND
2014-01-28AA64041-VOC1ND
2014-01-28AA64042-VOC1ND
2014-01-29AA64053-VOC1ND
2014-03-0335128814003AMND
2014-03-0335128814001AMND
2014-03-0335128814005AMND
2014-03-0435128919003AMND
2014-03-0435128919001AMND
2014-03-3135132407001AMND
2014-03-3135132407003AMND
2014-04-15AA64895-VOC1ND
2014-04-16AA64910-VOC1ND
2014-04-16AA64911-VOC1ND
2014-06-1735142680001AMND
2014-07-15AA65989-VOC1ND
2014-07-15AA65990-VOC1ND
2014-07-16AA66008-VOC1ND
2014-09-0835154373003AMND
2014-09-0835154373001AMND
2014-09-0935154734003AMND
2014-09-0935154734001AMND
2014-09-1035154778001AMND
2014-09-1035154778003AMND
2014-09-1635155693001AMND
2014-10-15AA67166-VOC1ND
2014-10-15AA67167-VOC1ND
2014-10-15AA67170-VOC1ND
2014-12-1535168214001AMND
2015-01-12AA68224-VOC1ND
2015-01-12AA68230-VOC1ND
2015-01-12AA68231-VOC1ND
2015-01-12AA68232-VOC1ND
2015-01-13AA68248-VOC1ND
2015-01-14AA68262-VOC1ND
2015-01-14AA68263-VOC1ND
2015-04-14AA69265-VOC1ND
2015-04-14AA69266-VOC1ND
2015-04-15AA69287-VOC1ND
2015-07-13AA70363-VOC1ND
2015-07-13AA70364-VOC1ND
2015-07-15AA70400-VOC1ND
2015-10-06AA71493-VOC1ND
2015-10-06AA71496-VOC1ND
2015-10-06AA71497-VOC1ND
2016-01-04AA72706-VOC1ND
2016-01-04AA72711-VOC1ND
2016-01-04AA72712-VOC1ND
2016-01-05AA72733-VOC1ND
2016-01-05AA72734-VOC1ND
2016-01-06AA72757-VOC1ND
2016-01-06AA72758-VOC1ND
2016-04-11AA73930-VOC1ND
2016-04-13AA73967-VOC1ND
2016-04-28AA74150-VOC1ND
2016-07-05AA75012-VOC1ND
2016-07-05AA75015-VOC1ND
2016-07-06AA75033-VOC1ND
2016-10-18AA76514-VOC1ND
2016-10-18AA76517-VOC1ND
2016-11-07AA76794-VOC1ND
2017-01-09AA77655-VOC1ND
2017-01-09AA77660-VOC1ND
2017-01-09AA77661-VOC1ND
2017-01-10AA77684-VOC1ND
2017-01-10AA77685-VOC1ND
2017-01-11AA77706-VOC1ND
2017-01-11AA77707-VOC1ND
2017-04-05AA78802-VOC1ND
2017-04-21AA79012-VOC1ND
2017-04-28AA79094-VOC1ND
2017-04-28AA79095-VOC1ND
2017-07-11AA80100-VOC1ND
2017-07-11AA80102-VOC1ND
2017-07-12AA80122-VOC1ND
2017-10-24AA81429-VOC1ND
2017-10-25AA81444-VOC1ND
2017-10-25AA81445-VOC1ND
2018-01-08AA82323-VOC1ND
2018-01-08AA82328-VOC1ND
2018-01-08AA82329-VOC1ND
2018-01-09AA82347-VOC1ND
2018-01-09AA82348-VOC1ND
2018-01-09AA82350-VOC1ND
2018-01-10AA82372-VOC1ND
2018-01-10AA82373-VOC1ND
2018-04-10AA83453-VOC1ND
2018-04-10AA83456-VOC1ND
2018-04-11AA83470-VOC1ND
2018-07-17AA84728-VOC1ND
2018-07-18AA84742-VOC1ND
2018-07-18AA84743-VOC1ND
2018-10-16AA85887-VOC1ND
2018-10-17AA85906-VOC1ND
2018-10-17AA85907-VOC1ND
2019-01-15AA86956-VOC1ND
2019-01-15AA86957-VOC1ND
2019-01-16AA86968-VOC1ND
2019-01-16AA86974-VOC1ND
2019-01-16AA86975-VOC1ND
2019-01-17AA86989-VOC1ND
2019-01-17AA86990-VOC1ND
2019-04-23AA88123-VOC1ND
2019-04-24AA88139-VOC1ND
2019-04-24AA88140-VOC1ND
2019-07-08AA89073-VOC1ND
2019-07-08AA89074-VOC1ND
2019-07-10AA89110-VOC1ND
2019-10-08AA90268-VOC1ND
2019-10-09AA90285-VOC1ND
2019-10-09AA90287-VOC1ND