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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Ruidoso Water System

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
2014N/A00N/A
2015ND160ND
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A

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
2015-01-29201501310036AMND
2015-01-29201501310030AMND
2015-01-29201501310038AMND
2015-01-29201501310040AMND
2015-04-28201504060030AMND
2015-04-29201504060028AMND
2015-04-29201504060029AMND
2015-04-29201504060027AMND
2015-07-21201506230634AMND
2015-07-21201506230633AMND
2015-07-21201506230636AMND
2015-07-21201506230635AMND
2015-10-14201509050105AMND
2015-10-14201509050106AMND
2015-10-14201509050107AMND
2015-12-02201511170064AMND