Know Your Environment. Protect Your Health.

Chloromethane

Prattsville Water District

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.

 

11

Samples

0

Samples exceeding legal limit (MCL)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019N/A00N/A
20200.970 ppb110.970 ppb
20212.90 ppb220.990 ppb - 4.80 ppb
20221.99 ppb43ND - 4.70 ppb
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
2020-07-09CG31073-POC0.970 ppb
2021-06-01CI418684.80 ppb
2021-12-02CJ891690.990 ppb
2022-03-24CK94265-POC4.70 ppb
2022-05-04CL230082.50 ppb
2022-08-11CM03438-POCND
2022-10-06CM514260.740 ppb
2023-03-02CN52181-POCND
2023-05-04CN98335-POCND
2023-08-03CO66019ND
2023-11-02CP40215-POCND