Know Your Environment. Protect Your Health.

Chloromethane

Rose Creek

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.

 

14

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20182.28 ppb42ND - 7.10 ppb
2019ND10ND
2020ND10ND
2021ND30ND
2022ND40ND
2023ND10ND

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
2018-02-0618B0292-01ND
2018-06-2618F2035-017.10 ppb
2018-09-2718I1479-012.00 ppb
2018-10-3018J1557-01ND
2019-03-2719C1219-01ND
2020-11-1620K0808-01ND
2021-07-2821G2036-01ND
2021-07-2821G2048-01ND
2021-10-0621J0293-01ND
2022-01-3122B0065-01ND
2022-06-0122F0111-01ND
2022-08-0122H0095-01ND
2022-10-1822J0781-01ND
2023-09-1223I0712-01ND