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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

City of New Summerfield

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.

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND10ND
20150.188 ppb41ND - 0.750 ppb
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
2014-07-16Q1428253009ND
2015-02-03Q1504127003ND
2015-02-03Q15041270010.750 ppb
2015-06-08Q1520778004ND
2015-08-13Q1532039004ND
2016-01-20Q1602596006ND
2016-01-20Q1602596009ND
2016-09-16Q1638287004ND
2016-10-21Q1645162003ND
2017-08-22Q1737570007ND
2017-08-22Q1737570002ND
2018-10-25Q1843100001ND
2018-10-25Q1843100004ND
2019-03-21Q1911964009ND
2019-03-21Q1911964003ND