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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

South Gate 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

 

64

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND120ND
2014ND180ND
2015ND80ND
2016ND60ND
2017ND70ND
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
2013-03-14440-40916-3ND
2013-03-14440-40916-1ND
2013-03-14440-40916-5ND
2013-03-14440-40916-9ND
2013-03-14440-40916-7ND
2013-06-13440-49196-1ND
2013-09-262905864ND
2013-09-262905875ND
2013-09-262905853ND
2013-09-262905909ND
2013-09-262905972ND
2013-12-122946501ND
2014-01-169588-009-1215ND
2014-01-169588-014-1330ND
2014-01-169588-008-1120ND
2014-01-169588-016-1040ND
2014-01-169588-007-1110ND
2014-04-179588-014-1325ND
2014-04-179588-007-1133ND
2014-04-179588-008-1145ND
2014-04-179588-009-1120ND
2014-07-249588-024-1253ND
2014-07-249588-007-1150ND
2014-07-249588-014-1008ND
2014-07-249588-009-1130ND
2014-07-249588-008-1212ND
2014-10-099588-007-1201ND
2014-10-099588-014-1317ND
2014-10-099588-008-1152ND
2014-10-099588-009-1136ND
2015-01-089588-016-0948ND
2015-01-089588-014-1206ND
2015-01-089588-009-1030ND
2015-01-089588-008-1055ND
2015-01-089588-007-1048ND
2015-04-099588-007-1124ND
2015-04-099588-008-1143ND
2015-07-099588-024-1015ND
2016-01-149588-016-1008ND
2016-01-149588-014-1217ND
2016-01-149588-009-1100ND
2016-04-149588-007-1121ND
2016-06-099588-008-0945ND
2016-07-149588-024-1058ND
2017-01-129588-016-1020ND
2017-01-129588-014-1122ND
2017-01-129588-009-1050ND
2017-05-109588-007-1024ND
2017-05-109588-008-1029ND
2017-07-129588-024-0936ND
2017-07-129588-009-1040ND
2018-01-109588-014-1109ND
2018-01-109588-016-1039ND
2018-03-299588-009-0857ND
2018-04-259588-009-0940ND
2018-04-259588-008-1020ND
2018-04-259588-007-1004ND
2018-07-239588-024-0912ND
2019-01-169588-014-0846ND
2019-01-169588-016-1024ND
2019-04-109588-009-1145ND
2019-04-109588-007-1005ND
2019-08-149588-008-1110ND
2019-11-209588-008-1045ND