Know Your Environment. Protect Your Health.

Chloromethane

Blaine

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.

 

36

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND30ND
2014ND50ND
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018ND60ND
2019ND20ND
2020ND10ND
2021ND40ND
2022ND40ND
2023ND110ND

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

Date Lab ID Result
2013-10-301056183009ND
2013-10-301056183006ND
2013-10-301056183003ND
2014-04-072000246003ND
2014-04-072000246009ND
2014-04-072000246006ND
2014-05-272009140001ND
2014-05-272009140004ND
2018-02-2818B1345-02ND
2018-02-2818B1345-01ND
2018-06-2218F1667-01ND
2018-07-1618G0768-01ND
2018-07-1618G0770-01ND
2018-10-2918J1451-01ND
2019-08-0119H0056-01ND
2019-10-3019J1701-01ND
2020-08-3120H2386-01ND
2021-02-0321B0180-02ND
2021-02-0321B0180-01ND
2021-10-2621J1368-01ND
2021-12-1721L0753-01ND
2022-02-1722B1198-01ND
2022-06-2122F1270-01ND
2022-09-2122I1864-01ND
2022-09-2122I1868-01ND
2023-03-1723C0874-01ND
2023-05-2323E2466-01ND
2023-08-1823H2091-01ND
2023-08-1823H2092-06ND
2023-08-1823H2092-05ND
2023-08-1823H2092-04ND
2023-08-1823H2092-03ND
2023-08-1823H2092-02ND
2023-09-1523I0865-01ND
2023-10-1323J0648-02ND
2023-10-1323J0648-01ND