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EWG's Tap Water Database — 2019 UPDATE

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MTBE

City of Santa Barbara Water Department

MTBE was used as gasoline oxygenation additive to boost the octane number. In 2005, MTBE was replaced by ethanol as a gasoline additive. MTBE causes cancers in rats.

 

82

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.306 ppb483ND - 6.00 ppb
20130.457 ppb212ND - 5.10 ppb
2014ND50ND
2015ND20ND
2016ND20ND
2017ND40ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 13 ppb

The EWG Health Guideline of 13 ppb for MTBE was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

ppb = parts per billion

All test results

Date Lab ID Result
2012-01-129590-004-1001ND
2012-01-259590-015-1026ND
2012-01-259590-015-10213.00 ppb
2012-02-099590-015-0945ND
2012-02-099590-015-1001ND
2012-02-099590-042-1103ND
2012-02-099590-042-1037ND
2012-02-099590-035-0859ND
2012-02-099590-035-0849ND
2012-03-149590-042-1403ND
2012-03-149590-015-1245ND
2012-03-149590-015-1300ND
2012-03-149590-042-1346ND
2012-04-119590-015-0822ND
2012-04-119590-015-0837ND
2012-04-119590-042-0958ND
2012-04-119590-042-0929ND
2012-04-119590-004-1039ND
2012-05-039590-015-1200ND
2012-05-039590-015-1220ND
2012-05-039590-042-1125ND
2012-05-039590-042-1110ND
2012-06-139590-015-1130ND
2012-06-139590-042-1214ND
2012-06-139590-042-1240ND
2012-06-139590-015-1145ND
2012-07-029590-015-1311ND
2012-07-029590-015-1255ND
2012-07-029590-042-1225ND
2012-07-029590-004-0905ND
2012-07-029590-042-1207ND
2012-07-189590-005-0923ND
2012-08-079590-042-1010ND
2012-08-079590-015-1122ND
2012-08-079590-015-1108ND
2012-08-079590-042-1030ND
2012-09-069590-042-1514ND
2012-09-069590-042-1504ND
2012-09-189590-015-09565.70 ppb
2012-09-189590-015-09496.00 ppb
2012-10-029590-042-0937ND
2012-10-039590-004-1000ND
2012-11-149590-042-0922ND
2012-11-149590-042-0912ND
2012-12-119590-035-1018ND
2012-12-119590-042-1346ND
2012-12-119590-042-1332ND
2012-12-119590-035-1108ND
2013-01-089590-004-0957ND
2013-01-099590-015-10295.10 ppb
2013-01-099590-035-1118ND
2013-01-099590-042-0950ND
2013-01-099590-035-1132ND
2013-01-099590-042-0920ND
2013-01-099590-015-10444.50 ppb
2013-04-029590-004-0850ND
2013-04-299590-053-0947ND
2013-07-099590-004-0927ND
2013-07-169590-042-0735ND
2013-07-169590-035-0843ND
2013-07-169590-035-0905ND
2013-07-169590-042-0758ND
2013-08-029590-005-0859ND
2013-08-189590-031-1605ND
2013-08-279590-015-1206ND
2013-08-279590-015-1216ND
2013-09-179590-015-1210ND
2013-09-179590-015-1205ND
2013-10-079590-022-1215ND
2014-02-199590-015-1322ND
2014-10-219590-042-0758ND
2014-10-219590-015-0843ND
2014-10-219590-035-0931ND
2014-10-229590-004-1014ND
2015-05-129590-055-0842ND
2015-11-109590-005-1050ND
2016-11-029590-053-1152ND
2016-11-029590-031-1120ND
2017-05-189590-058-1734ND
2017-11-079590-004-0955ND
2017-11-149590-042-0848ND
2017-11-149590-035-0930ND