Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Chloromethane

Cortland

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

 

46

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND50ND
2015ND10ND
2016ND150ND
2017ND90ND
2018ND90ND
2019ND70ND

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
2014-04-24POC 14 CORTLANDND
2014-06-12201406130304AMND
2014-06-12201406130290AMND
2014-11-25201411260332AMND
2014-11-25201411260261AMND
2015-05-28POC 15 CORTLANDND
2016-02-09POC 16W3M2 CORTLND
2016-02-17POC 16W4M2 CORTLND
2016-02-17POC 16W5M2 CORTLND
2016-03-22POC 16W4M3 CORTLND
2016-03-22POC 16W3M3 CORTLND
2016-03-22POC 16W5M3 CORTLND
2016-06-16POC 16W5M6 CORTLND
2016-06-16POC 16W3M6 CORTLND
2016-06-16POC 16W4M6 CORTLND
2016-08-08POC 16Q3W4 CORTLND
2016-10-04POC 16W3Q4 CORTLND
2016-10-17POC 16W5M10 CORTND
2016-12-27POC 16M12W4 CORTND
2016-12-27POC 16M12W3 CORTND
2016-12-27POC 16M12W5 CORTND
2017-03-07POC 17M3W4 CORTLND
2017-03-30POC 17M3W5 CORTLND
2017-05-11POC 17M5W3 CORTLND
2017-07-27POC 17M7W5 CORTLND
2017-07-27POC 17M7W4 CORTLND
2017-10-12POC 17M10W5 CORTND
2017-10-12POC 17M10W4 CORTND
2017-12-20POC 17M12W5 CORTND
2017-12-20POC 17M12W4 CORTND
2018-03-29POC 18M3W4 CORTLND
2018-03-29POC 18M3W5 CORTLND
2018-05-31POC 18W3 CORTLANND
2018-06-28POC 18M6W5 CORTLND
2018-06-28POC 18M6W4 CORTLND
2018-09-27POC 18M9W5 CORTLND
2018-09-27POC 18M9W4 CORTLND
2018-12-11POC 18M12W5 CORTND
2018-12-11POC 18M12W4 CORTND
2019-03-07POC 19M3W4 CORTLND
2019-05-30POC 19W3 CORTLANND
2019-06-26POC 19M6W5 CORTLND
2019-06-26POC 19M6W4 CORTLND
2019-10-09POC 19M10W4 CORTND
2019-10-31POC 19 CORTLANDND
2019-12-18POC 19M12W5 CORTND