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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Northampton Bucks County Municipal Authority

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

 

105

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND230ND
2015ND490ND
2016ND110ND
2017ND210ND
2018ND10ND
2019N/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
2014-02-25L4951918-1ND
2014-02-25L4951922-1ND
2014-05-20L4799412-1ND
2014-05-20L4690565-1ND
2014-07-17L5163463-1ND
2014-07-17L5163463-2ND
2014-07-17L5163463-3ND
2014-07-17L5163463-4ND
2014-07-17L5163463-7ND
2014-07-17L5163463-8ND
2014-07-17L5163463-9ND
2014-07-17L5163463-11ND
2014-07-17L5163463-10ND
2014-07-17L5163463-12ND
2014-07-17L5163463-5ND
2014-07-17L5163463-6ND
2014-07-17L5163463-14ND
2014-07-17L5163463-15ND
2014-07-17L5163463-13ND
2014-08-15L4460454-1ND
2014-08-15L4359849-1ND
2014-12-04L5352437-1ND
2014-12-04L5352436-1ND
2015-02-1012390397ND
2015-02-1012390451ND
2015-02-1200111 022015ND
2015-02-1200112 022015ND
2015-02-1200110 022015ND
2015-02-1200109 022015ND
2015-02-1200114 022015ND
2015-02-1200113 022015ND
2015-02-1200115 022015ND
2015-02-1200108 022015ND
2015-02-1200106 022015ND
2015-02-1200107 022015ND
2015-02-1800104 022015ND
2015-02-1800105 022015ND
2015-02-1800102 022015ND
2015-02-1800103 022015ND
2015-02-1800101 022015ND
2015-02-1800010 022015ND
2015-05-1112738453ND
2015-05-1112738399ND
2015-05-1200010 072015ND
2015-07-0913859288ND
2015-07-0913859396ND
2015-07-0913859342ND
2015-08-1800112 0815ND
2015-08-1800113 0815ND
2015-08-1800115 0815ND
2015-08-1800114 0815ND
2015-08-1800104 0815ND
2015-08-1800102 0815ND
2015-08-1800103 0815ND
2015-08-180010 0815ND
2015-08-1800010 0815ND
2015-08-1913123795ND
2015-08-1913123849ND
2015-08-2500111 0815ND
2015-08-2500110 0815ND
2015-08-2500105 0815ND
2015-08-2500108 0815ND
2015-08-2500107 0815ND
2015-08-2500109 0815ND
2015-08-2500106 0815ND
2015-08-2813124370ND
2015-11-1700010 1115ND
2015-11-2013503335ND
2015-11-2013503389ND
2015-11-2013503443ND
2015-11-2013503497ND
2015-11-2013503551ND
2016-02-2313974912ND
2016-02-2313974965ND
2016-02-2313975018ND
2016-02-2313975071ND
2016-02-2313975124ND
2016-05-2414237873ND
2016-07-2114555580ND
2016-07-2114555632ND
2016-07-2114555736ND
2016-07-2114555684ND
2016-08-3014892476ND
2017-02-2715644140ND
2017-06-0716243929ND
2017-08-0116552048ND
2017-08-0116551736ND
2017-08-0116551788ND
2017-08-0116551840ND
2017-08-0116551892ND
2017-08-0116552100ND
2017-08-0116551996ND
2017-08-0116551944ND
2017-08-1716552970ND
2017-08-1716553022ND
2017-08-1716553074ND
2017-08-1716553126ND
2017-08-1716553178ND
2017-08-1716553230ND
2017-08-2416552838ND
2017-08-2416552682ND
2017-08-2416552734ND
2017-08-2416552786ND
2017-08-2416552890ND
2018-01-29L6996345-1ND