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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Collins/gowanda Correctional Facilities

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)

3

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.0710 ppb110.0710 ppb
20150.185 ppb41ND - 0.740 ppb
2016ND10ND
20171.10 ppb111.10 ppb
20182.55 ppb330.340 ppb - 3.90 ppb
20191.81 ppb220.610 ppb - 3.00 ppb

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
2014-07-1748063999 POCS 200.0710 ppb
2015-04-13480-78300-1ND
2015-04-13480-78299-10.740 ppb
2015-07-15480-83980-1ND
2015-10-06480-88507 4TH QND
2016-01-28480-944701 POCSND
2017-08-08480-122485-1-POC1.10 ppb
2018-03-05480-132291-13.90 ppb
2018-05-08480-135652-13.40 ppb
2018-08-20480-140641-10.340 ppb
2019-02-26480-149528-10.610 ppb
2019-08-13EHS1900040899-SR3.00 ppb