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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

City of Red Bluff

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.

MORE ABOUT THIS CONTAMINANT

 

36

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND130ND
2015ND120ND
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019ND110ND

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
2014-12-154L17080-01AND
2014-12-154L17080-05AND
2014-12-154L17080-23AND
2014-12-154L17080-19AND
2014-12-154L17080-21AND
2014-12-154L17080-25AND
2014-12-154L17080-07AND
2014-12-154L17080-11AND
2014-12-154L17080-03AND
2014-12-154L17080-15AND
2014-12-154L17080-17AND
2014-12-154L17080-09AND
2014-12-154L17080-13AND
2015-06-225F23100-01AND
2015-06-225F23100-13AND
2015-06-225F23100-03AND
2015-06-225F23100-17AND
2015-06-225F23100-07AND
2015-06-225F23100-09AND
2015-06-225F23100-05AND
2015-06-225F23100-15AND
2015-06-225F23100-21AND
2015-06-225F23100-19AND
2015-06-225F23100-23AND
2015-06-225F23100-11AND
2019-04-165867-015-0900ND
2019-04-165867-014-1000ND
2019-04-165867-009-1000ND
2019-04-165867-008-0900ND
2019-04-165867-007-0800ND
2019-04-165867-004-0830ND
2019-04-175867-012-0720ND
2019-04-175867-011-0830ND
2019-04-175867-010-0815ND
2019-04-175867-005-0800ND
2019-04-175867-003-0740ND