Know Your Environment. Protect Your Health.

Chloromethane

New Lisbon Waterworks

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.

 

35

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
20180.0975 ppb81ND - 0.780 ppb
20190.106 ppb52ND - 0.290 ppb
20200.0420 ppb51ND - 0.210 ppb
2021ND60ND
2022ND50ND
2023ND60ND

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
2018-03-139893510.780 ppb
2018-03-21992144ND
2018-04-11104517ND
2018-04-11104518ND
2018-07-18151823ND
2018-07-18151825ND
2018-10-10192848ND
2018-10-10192851ND
2019-03-272575390.240 ppb
2019-03-272575040.290 ppb
2019-06-19295466ND
2019-08-07313611ND
2019-12-03366572ND
2020-05-20421987ND
2020-05-20421988ND
2020-05-204219890.210 ppb
2020-08-26466614ND
2020-12-02510528ND
2021-03-17542733ND
2021-03-17542733ND
2021-05-121005453ND
2021-07-281031722ND
2021-07-281031721ND
2021-10-271066877ND
2022-02-161101483ND
2022-06-221156562ND
2022-08-161214110ND
2022-08-161214111ND
2022-11-161264899ND
2023-02-081288229ND
2023-02-081288228ND
2023-02-081288227ND
2023-05-311330079ND
2023-07-191350423ND
2023-11-281401738ND