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EWG's Tap Water Database — 2019 UPDATE

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Chloromethane

City of Lake Charles 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.

 

46

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND340ND
2013N/A00N/A
2014N/A00N/A
2015ND120ND
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
2012-04-30AD65283ND
2012-04-30AD65285ND
2012-04-30AD65284ND
2012-04-30AD65282ND
2012-04-30AD65282ND
2012-04-30AD65283ND
2012-04-30AD65284ND
2012-04-30AD65285ND
2012-04-30AD65286ND
2012-04-30AD65286ND
2012-05-29AD65743ND
2012-05-29AD65746ND
2012-05-29AD65742ND
2012-05-29AD65745ND
2012-05-29AD65746ND
2012-05-29AD65744ND
2012-05-29AD65744ND
2012-05-29AD65743ND
2012-05-29AD65742ND
2012-05-29AD65745ND
2012-07-23AD67960ND
2012-07-23AD67959ND
2012-07-23AD67958ND
2012-07-23AD67956ND
2012-07-23AD67957ND
2012-07-23AD67958ND
2012-07-23AD67959ND
2012-07-23AD67960ND
2012-07-23AD67957ND
2012-07-23AD67956ND
2012-10-08AD71685ND
2012-10-08AD71685ND
2012-10-08AD71683ND
2012-10-08AD71683ND
2015-03-2535181144005AMND
2015-03-2535181144009AMND
2015-03-2535181144007AMND
2015-03-2535181144001AMND
2015-03-3035181602001AMND
2015-05-0135186425001AMND
2015-09-2335208696003AMND
2015-09-2335208696007AMND
2015-09-2335208696001AMND
2015-09-2335208696009AMND
2015-09-2335208696005AMND
2015-10-0835211214002AMND