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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Gettysburg Municipal Authority

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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015ND160ND
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/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
2015-03-102058890003ND
2015-03-102058890006ND
2015-03-102058890018ND
2015-03-112058890013ND
2015-03-122059263003ND
2015-03-122059263008ND
2015-03-182060100003ND
2015-06-162077453003ND
2015-09-142096141003ND
2015-09-142096144003ND
2015-09-152096138003ND
2015-09-152096135003ND
2015-09-212097507003ND
2015-09-212097509003ND
2015-09-222097508003ND
2015-12-082112591003ND