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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Parsippany-Troy Hills Water Department

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

 

108

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND310ND
2015ND290ND
2016ND170ND
2017ND180ND
2018ND70ND
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
2014-03-06340307105ND
2014-03-06340307106ND
2014-06-03340606102ND
2014-06-254060811-01ND
2014-07-104070305-01ND
2014-07-234070731-01ND
2014-08-064080175-01ND
2014-08-184080685-01ND
2014-08-19201408210498AMND
2014-08-19201408210225AMND
2014-08-19201408210474AMND
2014-08-19201408210311AMND
2014-09-03380907179ND
2014-09-034090040-01ND
2014-09-17340919074.2ND
2014-09-17340919075.2ND
2014-09-17340919076.2ND
2014-09-17340919077.2ND
2014-09-17340919078.2ND
2014-09-17340919069.2ND
2014-09-17340919070.2ND
2014-09-17340919071.2ND
2014-09-17340919072.2ND
2014-09-17340919073.2ND
2014-09-17340919080.2ND
2014-09-17340919079.2ND
2014-10-084100262-01ND
2014-10-284100821-01ND
2014-11-12201411150203AMND
2014-11-134110375-01ND
2014-12-02341205123ND
2015-02-18201502200289AMND
2015-02-18201502200373AMND
2015-02-23201502270168AMND
2015-02-23201502270159AMND
2015-02-23201502270197AMND
2015-02-23201502270176AMND
2015-02-23201502270146AMND
2015-02-24201502270247AMND
2015-02-24201502270165AMND
2015-02-24201502270154AMND
2015-02-24201502270135AMND
2015-02-25201502270195AMND
2015-02-25201502270162AMND
2015-03-03350306069ND
2015-03-03350306070ND
2015-05-06201505080282AMND
2015-06-03350605148ND
2015-09-16350918112.1ND
2015-09-16350918114.1ND
2015-09-16350918115ND
2015-09-16350918123.1ND
2015-09-16350918117.1ND
2015-09-16350918118.1ND
2015-09-16350918119.1ND
2015-09-16350918120.1ND
2015-09-16350918122.1ND
2015-09-16350918121.1ND
2015-12-04351207124ND
2015-12-04351207123ND
2016-03-04360307083ND
2016-03-04360307085ND
2016-03-04360307084ND
2016-06-06360608136ND
2016-06-06360608138ND
2016-06-06360608137ND
2016-09-06360908063.1ND
2016-09-06360908065.1ND
2016-09-06360908066ND
2016-09-06360908056.1ND
2016-09-06360908059.1ND
2016-09-06360908061.1ND
2016-09-06360908060.1ND
2016-09-07360908058.1ND
2016-09-16360908057.1ND
2016-11-29361207095ND
2016-11-29361207094ND
2017-03-06370308159ND
2017-03-06370308161ND
2017-03-06370308160ND
2017-05-03370505115ND
2017-06-06370608221ND
2017-06-06370608222ND
2017-09-13370915020.4ND
2017-09-13370915022.4ND
2017-09-13370915023.3ND
2017-09-13370915024.4ND
2017-09-13370915025.4ND
2017-09-13370915026.4ND
2017-09-13370915027.4ND
2017-09-13370915028.4ND
2017-09-13370915029.4ND
2017-09-13370915030.4ND
2017-09-13370915031ND
2017-12-06371207189ND
2018-03-06380308136ND
2018-03-06380308137ND
2018-06-05380607198ND
2018-09-04380907181AND
2018-09-05380907180AND
2018-10-16381019051ND
2018-10-16381019052ND
2019-03-06390307139ND
2019-06-12390613033ND
2019-09-05390906123.1ND
2019-09-05390906125.1ND
2019-09-05390906124.1ND
2019-12-04391205133ND