Know Your Environment. Protect Your Health.

Chloromethane

East Pasadena Water Company

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018ND20ND
2019ND20ND
2020ND20ND
2021ND20ND
2022ND20ND
2023ND20ND

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
2018-04-11CA1910020_012_012-201804111035ND
2018-07-12CA1910020_005_005-201807121035ND
2019-04-03CA1910020_012_012-201904031000ND
2019-07-29CA1910020_005_005-201907291225ND
2020-04-02CA1910020_012_012-202004021030ND
2020-07-09CA1910020_005_005-202007091040ND
2021-04-12CA1910020_012_012-202104121010ND
2021-07-13CA1910020_005_005-202107131115ND
2022-04-20CA1910020_012_012-202204201155ND
2022-08-09CA1910020_005_005-202208091125ND
2023-05-10CA1910020_012_012-202305101055ND
2023-08-16CA1910020_005_005-202308161040ND