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EWG's Tap Water Database — 2019 UPDATE

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Chloromethane

Parker Little River Water System

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.

 

17

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND30ND
2013ND40ND
2014ND40ND
2015ND40ND
2016ND10ND
2017ND10ND

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
2012-04-04AH56029ND
2012-07-17AH70104ND
2012-10-16AH81880ND
2013-03-12AH90579ND
2013-05-02AI00341ND
2013-08-06AI09276ND
2013-10-07AI19999ND
2014-01-09AI26220ND
2014-04-08AI37323ND
2014-07-09AI45160ND
2014-10-07AI56845ND
2015-01-23AI63333ND
2015-04-10AI74597ND
2015-07-10AI82489ND
2015-10-12AI92660ND
2016-02-10AJ06225ND
2017-05-11AJ55238ND