Know Your Environment. Protect Your Health.

Chloromethane

Oakdale

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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2015ND120ND
2016N/A00N/A
2017N/A00N/A
2018ND20ND
2019ND20ND
2020N/A00N/A
2021ND20ND
2022ND50ND
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
2015-01-052047834009ND
2015-01-052047834003ND
2015-01-052047834015ND
2015-01-052047834018ND
2015-01-052047834012ND
2015-01-282051870001ND
2015-07-142083051014ND
2015-07-142083051008ND
2015-07-142083051011ND
2015-07-142083051002ND
2015-07-142083051005ND
2015-07-142083051017ND
2018-08-2918H2504-04ND
2018-11-2818K1049-01ND
2019-09-2419I1346-05ND
2019-09-2419I1346-03ND
2021-11-3021K1445-02ND
2021-11-3021K1445-01ND
2022-03-3022C1204-02ND
2022-05-1722E1283-01ND
2022-09-1422I0893-02ND
2022-09-1422I0893-01ND
2022-12-2922L1157-01ND
2023-01-3123A1112-01ND