Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

MTBE

Los Angeles County WW District 4 & 34-Lancaster

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.

 

152

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND330ND
2013ND410ND
2014ND260ND
2015ND240ND
2016ND250ND
2017ND30ND

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
2012-01-245442-002-0842ND
2012-01-245442-053-0903ND
2012-01-245442-054-0937ND
2012-04-105442-093-0751ND
2012-04-105442-094-1110ND
2012-04-105442-095-1130ND
2012-04-125442-011-1040ND
2012-04-125442-054-1015ND
2012-06-135442-069-1030ND
2012-07-105442-036-0817ND
2012-07-115442-028-1041ND
2012-07-115442-048-1017ND
2012-07-115442-062-1021ND
2012-07-115442-063-1024ND
2012-07-315442-028-0853ND
2012-07-315442-048-0948ND
2012-07-315442-053-1043ND
2012-07-315442-062-0935ND
2012-07-315442-063-1003ND
2012-08-075442-028-1035ND
2012-08-085442-037-1051ND
2012-08-085442-053-0857ND
2012-08-085442-055-1151ND
2012-08-085442-067-0950ND
2012-08-145442-071-1136ND
2012-09-055442-035-0941ND
2012-09-055442-040-0928ND
2012-09-105442-016-0900ND
2012-09-105442-023-0918ND
2012-09-115442-037-0827ND
2012-09-125442-026-0855ND
2012-09-125442-041-0910ND
2012-09-125442-045-0950ND
2013-02-195442-070-0901ND
2013-03-115442-011-0931ND
2013-03-115442-016-1140ND
2013-03-115442-023-1045ND
2013-03-115442-028-1205ND
2013-03-115442-062-1130ND
2013-03-125442-036-1106ND
2013-03-135442-035-0852ND
2013-03-135442-035-1159ND
2013-03-195442-002-1135ND
2013-03-195442-026-0925ND
2013-04-035442-063-0835ND
2013-04-095442-070-0945ND
2013-05-215442-040-0908ND
2013-06-045442-041-0910ND
2013-06-045442-048-0934ND
2013-06-045442-070-1130ND
2013-06-125442-095-0859ND
2013-07-095442-036-0816ND
2013-07-165442-028-0943ND
2013-07-165442-041-0900ND
2013-07-165442-045-1050ND
2013-07-165442-048-1037ND
2013-07-165442-062-1041ND
2013-07-165442-063-1033ND
2013-07-165442-094-0859ND
2013-07-165442-095-0832ND
2013-07-235442-040-0924ND
2013-07-235442-071-1047ND
2013-07-245442-055-0853ND
2013-07-245442-069-1002ND
2013-07-295442-002-1043ND
2013-07-295442-054-0830ND
2013-08-065442-067-1035ND
2013-08-135442-035-1134ND
2013-08-145442-037-1048ND
2013-09-035442-026-0935ND
2013-09-045442-016-1006ND
2013-09-045442-023-0950ND
2013-11-125442-093-1033ND
2013-11-185442-053-1123ND
2014-03-185442-011-0830ND
2014-03-265442-055-1034ND
2014-04-095442-093-1000ND
2014-06-175442-069-0900ND
2014-06-175442-070-0912ND
2014-07-085442-048-0902ND
2014-07-085442-062-0856ND
2014-07-095442-041-0907ND
2014-07-095442-045-1024ND
2014-07-105442-071-1100ND
2014-07-105442-094-1000ND
2014-07-105442-095-1007ND
2014-07-175442-067-1026ND
2014-07-225442-002-1150ND
2014-07-225442-036-0904ND
2014-07-225442-040-0855ND
2014-07-225442-053-1120ND
2014-07-225442-054-1135ND
2014-07-225442-055-0947ND
2014-07-245442-063-1110ND
2014-08-195442-035-1015ND
2014-08-265442-037-0845ND
2014-09-095442-016-1100ND
2014-09-095442-023-1100ND
2014-09-305442-026-0855ND
2014-09-305442-028-0940ND
2015-03-045442-011-1020ND
2015-04-075442-093-0918ND
2015-04-145442-068-1110ND
2015-06-025442-069-1100ND
2015-06-025442-070-1010ND
2015-07-065442-028-1150ND
2015-07-065442-048-1115ND
2015-07-065442-062-1120ND
2015-07-075442-026-0850ND
2015-07-075442-041-0828ND
2015-07-075442-045-0938ND
2015-07-085442-067-0922ND
2015-07-085442-071-1100ND
2015-07-085442-095-1145ND
2015-07-135442-040-0850ND
2015-07-145442-053-0945ND
2015-07-145442-054-0930ND
2015-07-275442-055-1155ND
2015-08-125442-035-0925ND
2015-08-125442-036-0910ND
2015-08-185442-037-0930ND
2015-09-215442-016-0856ND
2015-09-215442-023-0905ND
2015-12-165442-094-1015ND
2016-01-195442-035-0950ND
2016-01-195442-040-0945ND
2016-01-255442-028-0840ND
2016-01-255442-048-0940ND
2016-01-255442-062-0930ND
2016-01-265442-093-1100ND
2016-02-095442-016-1028ND
2016-02-095442-068-1025ND
2016-02-095442-069-1010ND
2016-02-095442-070-1110ND
2016-02-105442-071-1125ND
2016-03-095442-023-1041ND
2016-03-285442-011-1138ND
2016-03-285442-055-1126ND
2016-03-285442-067-0856ND
2016-04-205442-026-1016ND
2016-04-205442-041-0934ND
2016-06-085442-036-0945ND
2016-06-275442-094-1125ND
2016-06-275442-095-1050ND
2016-06-285442-037-1132ND
2016-06-285442-053-1155ND
2016-06-285442-054-1152ND
2016-08-315442-016-1105ND
2016-12-155442-045-0911ND
2017-07-189588-063-0950ND
2017-11-219590-045-0935ND
2017-12-272920-068-0935ND