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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

City of Elko

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.

 

51

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015ND360ND
2016ND10ND
2017ND20ND
2018N/A00N/A
2019ND80ND

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
2014-05-07A4E0883-01ND
2014-07-21A4G2269-01ND
2014-07-231416770-01ND
2014-07-231416779-01ND
2015-05-11A5E0070-13AND
2015-05-11A5E0070-25AND
2015-05-11A5E0070-22AND
2015-05-11A5E0070-19AND
2015-05-11A5E0070-07AND
2015-05-11A5E0070-10AND
2015-05-11A5E0070-01AND
2015-05-11A5E0070-04AND
2015-05-12A5E0070-34AND
2015-05-12A5E0070-31AND
2015-05-12A5E0070-43AND
2015-05-12A5E0070-40AND
2015-05-12A5E0070-16AND
2015-05-12A5E0070-49AND
2015-05-12A5E0070-46AND
2015-05-12A5E0070-28AND
2015-05-13A5E0070-37AND
2015-05-19A5E1802-01ND
2015-08-241521530-01ND
2015-11-16A5J2251-43AND
2015-11-16A5J2251-37AND
2015-11-16A5J2251-40AND
2015-11-16A5J2251-10AND
2015-11-16A5J2251-34AND
2015-11-17A5J2251-01AND
2015-11-17A5J2251-46AND
2015-11-17A5J2251-13AND
2015-11-17A5J2251-49AND
2015-11-17A5J2251-28AND
2015-11-17A5J2251-07AND
2015-11-18A5J2251-04AND
2015-11-18A5J2251-22AND
2015-11-18A5J2251-31AND
2015-11-18A5J2251-16AND
2015-11-18A5J2251-19AND
2015-11-18A5J2251-25AND
2016-03-23A6C2465-01-VOCND
2017-07-251720763-01ND
2017-07-261720765-01ND
2019-08-19B19081870-001ND
2019-08-19B19081921-001ND
2019-08-20B19082032-001ND
2019-08-20B19082034-001AND
2019-08-21B19082173-001AND
2019-08-21B19082177-001ND
2019-09-04B19090361-001AND
2019-10-28B19102498-001ND