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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Elmira Water Board

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

 

119

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND10ND
2014ND240ND
2015ND190ND
2016ND180ND
2017ND190ND
2018ND190ND
2019ND190ND

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
2013-11-201060335003ND
2014-02-101071929003ND
2014-02-1814022444-003POCND
2014-02-1814022444-001POCND
2014-02-1814022444-002POCND
2014-02-1914022449-001POCND
2014-04-2814041825-005POCND
2014-04-2814041825-003POCND
2014-05-052005728001ND
2014-05-2014053775-002POCND
2014-05-2014053775-003POCND
2014-05-2014053775-001POCND
2014-05-2214053828-03POCSND
2014-07-08S4G0996-02POCND
2014-07-08S4G0996-01POCND
2014-07-08S4G0996-03POCND
2014-08-12S4H1713-01POCND
2014-08-12S4H1713-02POCND
2014-08-12S4H1713-03POCND
2014-08-15S4H1864-01POCSND
2014-08-252026067001ND
2014-11-17S4K1397-01POCSND
2014-11-17S4K1397-03POCSND
2014-11-17S4K1397-02POCSND
2014-11-18S4K1395-01POCSND
2015-02-17S5B1411-03POCND
2015-02-18S5B1411-02POCND
2015-02-18S5B1411-01POCND
2015-02-19S5B1410-01POCND
2015-05-21S5E0266-02POCSND
2015-05-21S5E0266-05POCSND
2015-05-21S5E0266-03POCSND
2015-05-21S5E0266-01POCSND
2015-05-21S5E0266-04POCSND
2015-08-25S5H1865-02POCND
2015-08-25S5H1867-01POCND
2015-08-25S5H1865-01POCND
2015-08-28S5I0279-03POCND
2015-10-21S5J1742-01POCSND
2015-10-21S5J1741-03POCSND
2015-11-16S5K1140-01POCSND
2015-11-16S5K1140-02POCSND
2015-11-16S5K1140-03POCSND
2015-11-19S5K1437-01POCSND
2016-02-16S6B0769-01POCND
2016-02-16S6B0769-02POCND
2016-02-16S6B0769-03POCND
2016-02-18S6B0767-01POCND
2016-05-16S6E0734-03POCND
2016-05-16S6E0734-05POCND
2016-05-16S6E0734-02POCND
2016-05-16S6E0734-04POCND
2016-05-17S6E0734-01POCND
2016-08-15S6H0653-01POCND
2016-08-15S6H0653-03POCND
2016-08-15S6H0653-02POCND
2016-08-16S6H0652-01POCND
2016-11-09J6K0741-01POCSND
2016-11-15J6K0897-02POCND
2016-11-15J6K0896-01POCND
2016-11-15J6K0897-03POCND
2016-11-15J6K0897-01POCND
2017-02-21J7B1250-02POCND
2017-02-21J7B1250-03POCND
2017-02-21J7B1250-01POCND
2017-02-22J7B1252-01POCND
2017-04-24J7D1457-03POCSND
2017-04-24J7D1457-06POCSND
2017-05-15J7E1288-03POCND
2017-05-15J7E1288-02POCND
2017-05-15J7E1290-02POCND
2017-05-15J7E1288-01POCND
2017-05-16J7E1290-01POCND
2017-08-14J7H1496-02POCSND
2017-08-14J7H1496-01POCSND
2017-08-14J7H1496-03POCSND
2017-08-15J7H1496-04POCSND
2017-11-21J7K1843-02POCND
2017-11-21J7K1843-03POCND
2017-11-21J7K1843-01POCND
2017-11-21J7K1844-01POCND
2018-02-20J8B0198-03POCND
2018-02-20J8B0198-04POCND
2018-02-20J8B0198-05POCND
2018-02-20J8B0198-01POCND
2018-02-20J8B0198-02POCND
2018-05-21J8E1326-01POCND
2018-06-15J8F1307-01POCSND
2018-06-15J8F1307-03POCSND
2018-06-15J8F1307-02POCSND
2018-08-20J8H2003-01POCND
2018-08-20J8H2006-02POCND
2018-08-20J8H2006-01POCND
2018-08-20J8H2006-03POCND
2018-10-15S8J0363-02POC-NOND
2018-10-15S8J0363-01POCND
2018-11-13J8K1047-04POCND
2018-11-13J8K1047-03POCND
2018-11-13J8K1047-01POCND
2018-11-13J8K1047-02POCND
2019-02-19S9B0267-04POCSND
2019-02-19S9B0267-05POCSND
2019-02-19S9B0267-02POCSND
2019-02-19S9B0267-03POCSND
2019-02-19S9B0267-01POCSND
2019-05-20S9E0301-01POCND
2019-05-20S9E0301-03POCND
2019-05-20S9E0301-04POCND
2019-05-20S9E0301-02POCND
2019-07-31S9G0260-02POCND
2019-07-31S9G0260-01POCND
2019-08-19S9H0344-04POCND
2019-08-19S9H0344-01POCND
2019-08-19S9H0344-03POCND
2019-08-19S9H0344-02ND
2019-11-04S9K0143-02POCND
2019-11-04S9K0143-01POCND
2019-11-04S9K0143-03POCND
2019-11-04S9K0143-04POCND