Know Your Environment. Protect Your Health.

Chloromethane

Holland Water District

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.

 

11

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
20180.890 ppb220.680 ppb - 1.10 ppb
20190.146 ppb51ND - 0.730 ppb
2020ND10ND
2021ND10ND
2022ND20ND
2023N/A00N/A

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
2018-05-16R1804528-0011.10 ppb
2018-08-07R1807559-0030.680 ppb
2019-03-13R1902205ND
2019-06-12R19054590.730 ppb
2019-08-12EHS1900040398-SR-2ND
2019-09-033056992001ND
2019-12-033074584001ND
2020-04-073096891001ND
2021-05-11EHS2100054419-01-2ND
2022-03-30EHS2200015539-01BND
2022-04-19EHS2200018402-01ND