Know Your Environment. Protect Your Health.

Chloromethane

Aquarion Water Company of Connecticut - Valley System

NOTE: Aquarion Water Company of Connecticut - Valley System purchases water from Regional Water Authority which is required to test for chloromethane. Sample information shown below was taken by Regional Water Authority.

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.

 

111

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND90ND
2014ND10ND
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018ND20ND
2019ND30ND
2020ND30ND
2021ND30ND
2022ND30ND
2023ND30ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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

NOTE: Aquarion Water Company of Connecticut - Valley System purchases water from Regional Water Authority which is required to test for chloromethane. Sample information shown below was taken by Regional Water Authority.

Date Lab ID Result
2014-01-21200389835 AND
2014-01-21200389833 AND
2014-01-21200389837 AND
2014-01-21200389845 AND
2014-01-21200389839 AND
2014-01-21200389841 AND
2014-01-21200389853 AND
2014-01-21200389843 AND
2014-01-21200389855 AND
2014-01-22200389861 AND
2014-04-29200394914ND
2014-04-29200394923ND
2014-04-29200394919ND
2014-04-29200394927ND
2014-07-15200399798ND
2014-07-15200399799ND
2014-07-15200399792ND
2014-07-15200399797ND
2014-07-15200399800ND
2014-07-15200399796ND
2014-07-15200399794ND
2014-07-15200399795ND
2014-07-15200399801ND
2014-07-15200399793ND
2014-10-21200406627ND
2014-10-21200406625ND
2014-10-21200406619ND
2014-10-21200406621ND
2018-03-05VOC1 200489156ND
2018-03-05VOC1 200489128ND
2018-03-05VOC1 200489129ND
2018-03-05VOC1 200489150ND
2018-03-06VOC1 200489295ND
2018-03-06VOC1 200489298ND
2018-03-06VOC1 200489296ND
2018-08-17VOC1 200502735ND
2018-11-29VOC1 200514106ND
2018-11-29VOC1 200514121ND
2019-03-04VOC1 200523150ND
2019-03-04VOC1 200523151ND
2019-03-04VOC1 200523175ND
2019-03-04VOC1 200523176ND
2019-03-05VOC1 200523251ND
2019-03-05VOC1 200523254ND
2019-03-05VOC1 200523252ND
2019-03-05VOC1 200523253ND
2019-03-05VOC1 200523284ND
2019-03-05VOC1 200523286ND
2019-05-08VOC1 200531298ND
2020-03-02VOC1 200567664ND
2020-03-02VOC1 200567665ND
2020-03-02VOC1 200567639AND
2020-03-02VOC1 200567640ND
2020-03-02VOC1 200567639ND
2020-03-03VOC1 200567761ND
2020-03-03VOC1 200567764ND
2020-03-03VOC1 200567762ND
2020-03-03VOC1 200567961ND
2020-03-05VOC1 200568299ND
2021-03-08VOC1 200608801ND
2021-03-08VOC1 200608885ND
2021-03-08VOC1 200608882ND
2021-03-09VOC1 200608962ND
2021-03-09VOC1 200608960ND
2021-03-09VOC1 200608959ND
2021-03-09VOC1 200608951ND
2021-03-09VOC1 200608924ND
2021-03-09VOC1 200608986ND
2021-03-10VOC1 200609193ND
2021-09-14V300058206 300058876ND
2022-03-07V300153323 300153329ND
2022-03-07V300153337 300153343ND
2022-03-07V300153401 300153407ND
2022-03-07V300153384 300153390ND
2022-03-08V300153972 300153978ND
2022-03-08V300153964 300153970ND
2022-03-08V300153956 300153962ND
2022-03-08V300154039 300154044ND
2022-03-08V300154049 300154054ND
2022-03-09V300154647 300154653ND
2022-03-09V300154596 300154602ND
2023-02-06V300305519 300305525ND
2023-02-21V300312034 300312489ND
2023-02-21V300312044 300312491ND
2023-02-21V300312000 300312269ND
2023-02-21V300312008 300312271ND
2023-03-06V300316290 300316296ND
2023-03-06V300316304 300316310ND
2023-03-06V300316337 300316343ND
2023-03-06V300316298 300316301ND
2023-03-06V300316312 300316315ND
2023-03-06V300316345 300316348ND
2023-03-07V300316907 300316913ND
2023-03-07V300316899 300316905ND
2023-03-07V300317611 300317617ND
2023-03-07V300317619 300317622ND
2023-03-08V300318416 300318422ND
2023-03-08V300317948 300317953ND
2023-03-08V300317958 300317963ND
2023-03-09V300319225 300319231ND
2023-06-05V300358561 300358568ND
2023-06-06V300359376 300359383ND
2023-06-06V300359368 300359375ND
2023-06-06V300359360 300359367ND
2023-06-06V300359352 300359359ND
2023-06-06V300359024 300359031ND
2023-06-06V300359033 300359040ND
2023-06-06V300359384 300359391ND
2023-06-06V300359393 300359400ND
2023-06-07V300360413 300360420ND
2023-06-07V300360421 300360428ND