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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Collingswood Water Depar

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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND100ND
2015N/A00N/A
2016N/A00N/A
2017ND10ND
2018ND20ND
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
2014-03-0714031563-001ND
2014-03-0714031563-002ND
2014-03-281078865006ND
2014-03-281078865003ND
2014-06-1714061881-002ND
2014-06-1714061881-001ND
2014-09-2414092459-001ND
2014-09-2414092459-002ND
2014-09-262031570003ND
2014-09-262031570006ND
2017-06-30L6876932-1ND
2018-12-28381228702AND
2018-12-28381228703AND
2019-01-16390116768.1ND
2019-01-16390116767.1ND
2019-04-03390403745ND
2019-04-03390403746ND
2019-07-10390711700ND
2019-10-16391016760.1ND
2019-11-20391120796ND