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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Cedar Falls Acres Mobile Home Park

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
2014ND20ND
2015ND40ND
2016ND30ND
20170.0725 ppb41ND - 0.290 ppb
2018ND20ND
2019ND10ND

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
2014-09-04155134001ND
2014-12-11172425001ND
2015-03-24184915001ND
2015-06-24202048001ND
2015-09-14217339001ND
2015-12-17233338001ND
2016-03-28705337ND
2016-09-28281101001ND
2016-11-07287856001ND
2017-03-28306584001ND
2017-06-28325298001ND
2017-09-283458430010.290 ppb
2017-11-27356248001ND
2018-08-211075273ND
2018-12-26425684001ND
2019-09-26473087001ND