Know Your Environment. Protect Your Health.

Chloromethane

City of Frost

NOTE: City of Frost purchases water from City of Corsicana which is required to test for chloromethane. Sample information shown below was taken by City of Corsicana.

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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND30ND
2020ND10ND
2021ND10ND
2022ND10ND
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

NOTE: City of Frost purchases water from City of Corsicana which is required to test for chloromethane. Sample information shown below was taken by City of Corsicana.

Date Lab ID Result
2014-03-044C05004-04ND
2014-03-044C05004-01ND
2014-06-034F04044-01ND
2014-06-034F04044-04ND
2014-09-034I04031-01ND
2014-09-034I04031-04ND
2014-12-024L03007-01ND
2014-12-024L03007-04ND
2018-07-17Q1828588004ND
2018-07-17Q1828588001ND
2019-07-29Q1948665001ND
2019-09-24Q1968203001ND
2020-09-16Q2037149001ND
2020-09-24Q2037862001ND
2021-07-14Q2118452001ND
2021-09-16Q2125446001ND
2022-08-23Q2224990003ND
2022-08-23Q2224990001ND
2023-07-31Q2330841001ND
2023-07-31Q2330841003ND