Know Your Environment. Protect Your Health.

Chloromethane

Norwich Public Utilities

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.

 

27

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND80ND
2015ND20ND
2016N/A00N/A
2017N/A00N/A
2018ND30ND
2019ND30ND
2020ND30ND
2021ND20ND
2022ND30ND
2023ND30ND

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
2014-06-17200398126ND
2014-06-17200398127ND
2014-06-17200398125ND
2014-09-11200404222ND
2014-09-11200404220ND
2014-12-11200409481ND
2014-12-11200409479ND
2014-12-11200409477ND
2015-03-10200413492ND
2015-03-10200413493ND
2018-09-18PH-0453-6304497VOC1ND
2018-09-18PH-0453-6304496VOC1ND
2018-10-03PH-0453-6304498VOC1ND
2019-08-29PH-0453-6305611VOC1ND
2019-08-29PH-0453-6305609VOC1ND
2019-09-16PH-0453-6305610VOC1ND
2020-07-09PH-0453-6306438VOC1ND
2020-07-09PH-0453-6306437VOC1ND
2020-07-09PH-0453-6306436VOC1ND
2021-06-07PH-0453-6307352VOC1ND
2021-06-23PH-0453-6307354VOC1ND
2022-01-18PH-0453-6307960VOC1ND
2022-02-03PH-0453-6307962VOC1ND
2022-11-29PH-0453-6307961VOC1ND
2023-11-14D3K1545-01VOCND
2023-11-14D3K1545-02VOCND
2023-11-14D3K1545-03VOCND