Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Chloromethane

South Huntington Water Department

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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013ND40ND
2014ND70ND
2015ND70ND
2016N/A00N/A
2017N/A00N/A

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
2013-11-1990027ND
2013-11-1978156ND
2013-11-2078142ND
2013-11-2078137ND
2014-04-1578121 042014ND
2014-05-12UCMR3 EP013ND
2014-05-12UCMR3 EP016ND
2014-05-12UCMR3 EP012ND
2014-05-14UCMR3 EP007ND
2014-05-1478137 05/14/2014ND
2014-05-16UCMR3 EP015ND
2015-01-2378132 012015ND
2015-01-2378148 012015ND
2015-01-2678152 012015ND
2015-04-2378130 42015ND
2015-07-2778148 72015ND
2015-07-2778132 72015ND
2015-10-2178130 1015ND