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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Lynwood 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

 

34

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND110ND
2015ND50ND
2016ND50ND
2017ND60ND
2018ND40ND
2019ND30ND

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
2014-01-229588-008-1115ND
2014-01-229588-009-1103ND
2014-01-294A29059-09AND
2014-01-294A29059-07AND
2014-01-294A29059-11AND
2014-01-294A29059-01AND
2014-01-294A29059-05AND
2014-01-294A29059-03AND
2014-06-254F25073-01AND
2014-07-169588-011-0953ND
2014-10-159588-016-0818ND
2015-01-149588-008-1040ND
2015-01-149588-009-1053ND
2015-04-089588-016-0936ND
2015-07-159588-011-1055ND
2015-10-199588-016-1000ND
2016-01-139588-008-1300ND
2016-01-139588-009-1245ND
2016-04-139588-008-1018ND
2016-04-139588-009-1002ND
2016-07-139588-011-0940ND
2017-01-119588-008-0945ND
2017-01-119588-009-1020ND
2017-06-209588-016-0930ND
2017-07-129588-011-1000ND
2017-10-119588-009-1015ND
2017-10-119588-008-1040ND
2018-01-109588-009-1030ND
2018-01-109588-008-1115ND
2018-04-189588-016-0950ND
2018-07-099588-011-0944ND
2019-01-099588-009-1030ND
2019-03-149588-008-0905ND
2019-04-109588-016-1000ND