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EWG's Tap Water Database — 2019 UPDATE

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Chloromethane

Mission Springs WD

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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013ND100ND
2014ND100ND
2015N/A00N/A
2016N/A00N/A
2017N/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
2013-07-23201307240881AMND
2013-07-23201307240890AMND
2013-07-23201307240884AMND
2013-07-23201307240887AMND
2013-07-23201307240876AMND
2013-07-24201307260138AMND
2013-07-24201307260144AMND
2013-07-24201307260132AMND
2013-07-24201307260128AMND
2013-07-24201307260147AMND
2014-01-07201401080962AMND
2014-01-07201401080974AMND
2014-01-07201401080972AMND
2014-01-07201401080996AMND
2014-01-07201401080976AMND
2014-01-14201401150804AMND
2014-01-14201401150802AMND
2014-01-14201401150821AMND
2014-01-14201401150811AMND
2014-01-14201401150816AMND