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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

City of Columbus

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

 

104

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND160ND
2015ND240ND
2016ND200ND
2017ND210ND
2018ND170ND
2019ND60ND

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
2014-01-27278476ND
2014-04-07293475ND
2014-07-07309738ND
2014-08-11310474ND
2014-09-23324187ND
2014-09-23324188ND
2014-09-23324189ND
2014-09-23324190ND
2014-10-06328594ND
2014-10-20826637-12665ND
2014-10-20826635-12665ND
2014-10-27332909ND
2014-10-27332910ND
2014-10-27332911ND
2014-10-27332912ND
2014-11-18832204-12883ND
2015-01-05343322ND
2015-02-09343323ND
2015-03-02348718ND
2015-03-02348719ND
2015-03-02348720ND
2015-03-02348721ND
2015-04-01353635ND
2015-04-14854279-13862ND
2015-04-14854287-13862ND
2015-04-14854289-13862ND
2015-06-01364957ND
2015-06-01364958ND
2015-06-01364959ND
2015-06-01364960ND
2015-07-06371054ND
2015-09-08378740ND
2015-09-08378741ND
2015-09-08378742ND
2015-09-08378743ND
2015-10-05391882ND
2015-12-01402126ND
2015-12-01402127ND
2015-12-01402128ND
2015-12-01402129ND
2016-01-20ND
2016-02-29ND
2016-02-29ND
2016-02-29ND
2016-02-29ND
2016-04-11ND
2016-06-08ND
2016-06-08ND
2016-06-08ND
2016-06-08ND
2016-07-05ND
2016-09-06ND
2016-09-06ND
2016-09-06ND
2016-09-06ND
2016-11-07ND
2016-12-05ND
2016-12-05ND
2016-12-05ND
2016-12-05ND
2017-03-01ND
2017-03-06ND
2017-03-06ND
2017-03-06ND
2017-03-06ND
2017-04-10ND
2017-06-05ND
2017-06-05ND
2017-06-05ND
2017-06-05ND
2017-06-12ND
2017-09-06ND
2017-09-06ND
2017-09-06ND
2017-09-06ND
2017-09-11ND
2017-10-10ND
2017-12-04ND
2017-12-04ND
2017-12-04ND
2017-12-04ND
2018-01-03530737ND
2018-02-26530738ND
2018-03-05534065ND
2018-03-05534066ND
2018-03-05534067ND
2018-03-05534068ND
2018-04-02541803ND
2018-06-04549786ND
2018-06-04549787ND
2018-06-04549788ND
2018-06-04549789ND
2018-07-09560150ND
2018-09-04568495ND
2018-09-04568496ND
2018-09-04568497ND
2018-09-04568498ND
2018-10-15577007ND
2019-01-14590554ND
2019-04-01602852ND
2019-07-08621112ND
2019-07-15623645ND
2019-07-15623646ND
2019-10-07638483ND