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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Enterprise Water Works

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

 

90

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND220ND
2015ND220ND
2016ND170ND
2017ND100ND
2018ND50ND
2019ND140ND

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
2014-03-121403-00284-7ND
2014-03-121403-00284-8ND
2014-03-121403-00284-9ND
2014-09-2535157120024AMND
2014-09-2535157120028AMND
2014-09-2535157120014AMND
2014-09-2535157120032AMND
2014-09-2535157120001AMND
2014-09-2535157120020AMND
2014-09-2535157120016AMND
2014-09-2535157120006AMND
2014-09-2535157120010AMND
2014-09-2535157120018AMND
2014-09-2635157120026AMND
2014-09-2635157120034AMND
2014-09-2635157120003AMND
2014-09-2635157120022AMND
2014-09-2635157120008AMND
2014-09-2635157120030AMND
2014-09-2635157120012AMND
2014-11-181411-00235-1VND
2014-11-181411-00235-5VND
2015-02-171502-00240-3VND
2015-02-171502-00240-7ND
2015-02-171502-00240-5ND
2015-03-0935178873005AMND
2015-03-0935178873029AMND
2015-03-0935178873031AMND
2015-03-0935178873003AMND
2015-03-0935178873001AMND
2015-03-0935178873015AMND
2015-03-0935178873021AMND
2015-03-0935178873023AMND
2015-03-0935178873011AMND
2015-03-0935178873027AMND
2015-03-0935178873009AMND
2015-03-0935178873007AMND
2015-03-0935178873017AMND
2015-03-0935178873019AMND
2015-03-0935178873033AMND
2015-03-0935178873013AMND
2015-03-0935178873025AMND
2015-11-041511-00076-010ND
2015-11-041511-00076-11ND
2016-03-161603-00261-2VND
2016-03-161603-00261-3VND
2016-03-161603-00261-1VND
2016-09-131609-00214-8ND
2016-09-131609-00214-17ND
2016-09-131609-00214-5ND
2016-09-131609-00214-2ND
2016-09-131609-00214-1ND
2016-09-131609-00214-14ND
2016-09-131609-00214-11ND
2016-09-131609-00214-15ND
2016-09-131609-00214-16ND
2016-09-131609-00214-3ND
2016-09-131609-00214-4ND
2016-10-181610-00215-1VND
2016-12-061612-00141-21ND
2016-12-061612-00141-28ND
2017-02-281703-00015-3ND
2017-02-281703-00015-4ND
2017-02-281703-00015-007ND
2017-03-211703-00293-1ND
2017-03-211703-00293ND
2017-03-211703-00293-4ND
2017-06-261706-00408-2ND
2017-09-191709-00306-10ND
2017-10-311711-00018-4ND
2017-10-311711-00018-5ND
2018-03-141803-00266-15ND
2018-03-141803-00266-16ND
2018-03-141803-00266-14ND
2018-03-141803-00266-13ND
2018-11-271811-00495-003ND
2019-12-181912-00394-001ND
2019-12-181912-00394-002ND
2019-12-181912-00394-012ND
2019-12-181912-00394-009ND
2019-12-181912-00394-013ND
2019-12-181912-00394-003ND
2019-12-181912-00394-006ND
2019-12-181912-00394-010ND
2019-12-181912-00394-011ND
2019-12-181912-00394-007ND
2019-12-181912-00394-005ND
2019-12-181912-00394-014ND
2019-12-181912-00394-015ND
2019-12-181912-00394-004ND