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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Goleta Water District

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

 

80

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND240ND
2015ND150ND
2016ND140ND
2017ND90ND
2018ND50ND
2019ND130ND

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
2014-01-284A29021-05AND
2014-01-284A29021-07AND
2014-01-284A29021-01AND
2014-01-284A29021-03AND
2014-02-124B13092-01AND
2014-02-189588-001-1220ND
2014-03-134C14053-01AND
2014-03-189590-001-1127ND
2014-04-229590-001-1125ND
2014-04-284D29011-01AND
2014-06-184F19088-01AND
2014-07-174G18046-13AND
2014-07-174G18046-01AND
2014-07-174G18046-09AND
2014-07-174G18046-05AND
2014-07-174G18046-11AND
2014-08-279590-001-1057ND
2014-09-154I17055-01AND
2014-09-309590-001-1140ND
2014-10-204J21040-01AND
2014-10-219590-001-1100ND
2014-10-304J31032-01AND
2014-12-039590-001-1100ND
2014-12-044L05054-01AND
2015-01-055A06071-01AND
2015-01-159590-001-1157ND
2015-01-275A28011-01AND
2015-01-275A28011-05AND
2015-02-049590-033-1158ND
2015-02-129590-001-1242ND
2015-03-119590-001-1238ND
2015-04-169590-001-1129ND
2015-06-299590-001-1016ND
2015-07-239590-001-1107ND
2015-08-119590-001-1025ND
2015-09-169590-001-1209ND
2015-10-139590-001-1230ND
2015-11-109590-001-1020ND
2015-12-089590-001-1110ND
2016-02-089590-001-1049ND
2016-03-309590-018-0915ND
2016-05-189590-013-1058ND
2016-06-149590-026-1040ND
2016-06-149590-018-1040ND
2016-07-199590-038-1100ND
2016-08-029590-026-1050ND
2016-08-029590-042-1030ND
2016-08-109590-041-1100ND
2016-08-169590-040-1030ND
2016-08-249590-001-1028ND
2016-10-059590-033-1045ND
2016-10-109590-045-1110ND
2016-11-169590-033-1045ND
2017-03-079590-001-1406ND
2017-03-289590-001-1000ND
2017-04-129590-013-1200ND
2017-05-049590-033-1100ND
2017-08-039590-042-1100ND
2017-11-079590-035-1030ND
2017-11-209590-041-1000ND
2017-11-279590-058-1100ND
2017-11-289590-059-1030ND
2018-03-069590-032-1045ND
2018-03-079590-034-1030ND
2018-03-202920-035-1030ND
2018-03-209590-035-1030ND
2018-04-119590-018-1030ND
2019-04-259588-041-1030ND
2019-05-029588-038-1030ND
2019-05-099588-040-1030ND
2019-05-149588-058-1030ND
2019-05-219588-058-1030ND
2019-07-109588-031-1205ND
2019-07-129588-035-0825ND
2019-08-279588-018-1020ND
2019-09-179588-033-1015ND
2019-10-109588-013-1125ND
2019-10-149590-001-1205ND
2019-11-139588-026-1123ND
2019-11-149588-059-1015ND