Know Your Environment. Protect Your Health.

Chloromethane

Bristol 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.

 

38

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND100ND
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018ND40ND
2019ND40ND
2020ND40ND
2021ND40ND
2022ND80ND
2023ND40ND

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
2014-01-06201401070092AMND
2014-01-06201401070098AMND
2014-01-06201401070094AMND
2014-01-06201401070100AMND
2014-04-02201404030420AMND
2014-07-07201407090847AMND
2014-07-07201407080383AMND
2014-07-07201407080354AMND
2014-07-07201407080356AMND
2014-10-06201410070315AMND
2018-01-10D8A0568-04VOCND
2018-01-10D8A0568-01VOCND
2018-01-10D8A0568-03VOCND
2018-01-10D8A0568-02VOCND
2019-10-28D9J2584-01VOCND
2019-10-28D9J2584-04VOCND
2019-10-28D9J2584-03VOCND
2019-10-28D9J2584-02VOCND
2020-11-19D0K1813-04VOCND
2020-11-19D0K1813-01VOCND
2020-11-19D0K1813-02VOCND
2020-11-19D0K1813-03VOCND
2021-08-12D1H1346-01VOCND
2021-08-12D1H1346-04VOCND
2021-08-12D1H1346-03VOCND
2021-08-12D1H1346-02VOCND
2022-11-21D2K1965-03VOCND
2022-11-21D2K1965-06VOCND
2022-11-21D2K1965-05VOCND
2022-11-21D2K1965-02VOCND
2022-11-21D2K1965-01VOCND
2022-11-21D2K1965-04VOCND
2022-11-28D2K2374-02VOCND
2022-11-28D2K2374-01VOCND
2023-03-06D3C0654-01VOCND
2023-03-06D3C0654-02VOCND
2023-03-06D3C0654-03VOCND
2023-03-15D3C1373-01VOCND