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EWG's Tap Water Database — 2019 UPDATE

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Chloromethane

City of Auburn

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.

 

19

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND30ND
2013ND10ND
2014ND140ND
2015N/A00N/A
2016ND10ND
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
2012-07-0571555ND
2012-07-0571554ND
2012-07-0571553ND
2013-07-0272565ND
2014-03-11A4B1976-01AND
2014-03-11A4B1976-12AND
2014-03-13A4B1976-08AND
2014-03-18A4C0166-01AND
2014-03-18A4C0166-05AND
2014-04-01A4C1981-01AND
2014-06-11A4C2313-01AND
2014-09-09A4I0142-01AND
2014-09-16A4I0632-06AND
2014-09-16A4I0632-01AND
2014-09-23A4I1297-01AND
2014-09-23A4I1297-06AND
2014-09-30A4I2084-01AND
2014-12-09A4L0057-01AND
2016-07-07ND