Know Your Environment. Protect Your Health.

Chloromethane

Felsenthal Water and Sewer

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.

 

19

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.828 ppb42ND - 2.68 ppb
2019ND30ND
20200.988 ppb42ND - 3.14 ppb
2021ND40ND
20220.158 ppb41ND - 0.633 ppb
2023N/A00N/A

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
2018-02-2718060003101ND
2018-05-0118123006001ND
2018-07-10181930068010.630 ppb
2018-10-24182980002012.68 ppb
2019-02-1819052004601ND
2019-07-1519198002101ND
2019-10-2819303001701ND
2020-01-28200300052070.810 ppb
2020-06-1620170004001ND
2020-07-20202040012013.14 ppb
2020-11-1720324002901ND
2021-01-2721028015101ND
2021-04-2121111000301ND
2021-08-3021245000201ND
2021-10-2621301005501ND
2022-03-02O195908-VOC-1ND
2022-05-24O198513-VOC-1ND
2022-07-26O200115-VOC-1ND
2022-10-24O203229-VOC-10.633 ppb