Chloromethane

City of Beatrice

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.

MORE ABOUT THIS CONTAMINANT

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Range of results
2014	ND	8	ND
2015	ND	17	ND
2016	ND	3	ND
2017	ND	2	ND
2018	ND	3	ND
2019	ND	3	ND

ppb = parts per billion

State and national drinking water standards and health guidelines

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
2014-09-08	324203	ND
2014-09-08	324204	ND
2014-09-08	324205	ND
2014-09-08	324206	ND
2014-10-27	332960	ND
2014-10-27	332957	ND
2014-10-27	332959	ND
2014-10-27	332958	ND
2015-01-20	346204	ND
2015-01-20	346205	ND
2015-01-20	346206	ND
2015-01-20	346207	ND
2015-02-03	841777-13345	ND
2015-02-03	841783-13345	ND
2015-02-23	345996	ND
2015-04-20	357697	ND
2015-04-20	357695	ND
2015-04-20	357696	ND
2015-04-20	357698	ND
2015-07-20	374573	ND
2015-07-20	374575	ND
2015-07-20	374574	ND
2015-07-20	374572	ND
2015-08-04	874997-14652	ND
2015-08-18	877857-14713	ND
2016-02-16		ND
2016-08-01		ND
2016-08-01		ND
2017-08-01		ND
2017-08-01		ND
2018-07-30	567287	ND
2018-07-30	567288	ND
2018-08-20	560299	ND
2019-01-28	592534	ND
2019-08-12	628496	ND
2019-08-12	628497	ND