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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Whippoorwill Bay Subdivision

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.

 

12

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
2015ND20ND
2016ND40ND
2017ND20ND
2018ND20ND
2019ND20ND

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
2015-09-23Q1537353001ND
2015-09-23Q1537353003ND
2016-06-27Q1625940001ND
2016-09-19Q1638291001ND
2016-11-17Q1650512005ND
2016-11-17Q1650512007ND
2017-09-20Q1745420001ND
2017-09-20Q1745420004ND
2018-10-02Q1839345009ND
2018-10-02Q1839345001ND
2019-08-06Q1951295001ND
2019-08-06Q1951295003ND