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EWG's Tap Water Database — 2021 UPDATE

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MTBE

Oxnard 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.

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417

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND50ND
2015ND490ND
2016ND680ND
2017ND890ND
2018ND890ND
2019ND1170ND

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
2014-11-199588-018-0831ND
2014-11-199588-035-1014ND
2014-11-199588-036-0958ND
2014-11-199588-037-1021ND
2014-11-199588-040-0800ND
2015-01-079588-018-0827ND
2015-01-079588-020-0855ND
2015-01-079588-035-0920ND
2015-01-079588-036-0930ND
2015-01-079588-037-0938ND
2015-01-079588-039-0819ND
2015-01-079588-040-0818ND
2015-04-019588-018-0928ND
2015-04-019588-020-0948ND
2015-04-019588-035-1030ND
2015-04-019588-036-1039ND
2015-04-019588-040-0938ND
2015-05-069588-018-0857ND
2015-05-069588-020-0924ND
2015-05-069588-035-0942ND
2015-05-069588-036-1005ND
2015-05-069588-037-0951ND
2015-05-069588-040-0911ND
2015-06-039588-018-0904ND
2015-06-039588-020-0932ND
2015-06-039588-035-1006ND
2015-06-039588-036-0959ND
2015-06-039588-037-1020ND
2015-07-089588-018-0838ND
2015-07-089588-020-0902ND
2015-07-089588-035-0937ND
2015-07-089588-036-1020ND
2015-07-089588-037-0952ND
2015-07-089588-040-0851ND
2015-08-059588-035-1004ND
2015-08-059588-036-1016ND
2015-08-059588-039-0917ND
2015-09-029588-018-0937ND
2015-09-029588-035-1004ND
2015-09-029588-036-1016ND
2015-09-029588-037-0938ND
2015-09-029588-040-0850ND
2015-11-049588-018-0752ND
2015-11-049588-020-0714ND
2015-11-049588-035-0814ND
2015-11-049588-036-0824ND
2015-11-049588-037-0839ND
2015-11-049588-039-0745ND
2015-12-099588-018-0832ND
2015-12-099588-020-0803ND
2015-12-099588-035-0855ND
2015-12-099588-036-0905ND
2015-12-099588-037-0930ND
2015-12-099588-039-0821ND
2016-01-079588-018-1325ND
2016-01-079588-035-0922ND
2016-01-079588-036-0857ND
2016-01-079588-037-0932ND
2016-01-079588-039-0833ND
2016-02-039588-018-0930ND
2016-02-039588-020-0843ND
2016-02-039588-035-0950ND
2016-02-039588-036-1048ND
2016-02-039588-037-1035ND
2016-02-039588-039-0900ND
2016-03-029588-018-0923ND
2016-03-029588-020-0844ND
2016-03-029588-035-0956ND
2016-03-029588-036-1025ND
2016-03-029588-039-0902ND
2016-03-039588-020-0000ND
2016-03-039588-039-0907ND
2016-03-179588-035-0917ND
2016-03-179588-038-1007ND
2016-03-229588-040-0855ND
2016-03-229588-041-0943ND
2016-05-049588-018-0942ND
2016-05-049588-020-0951ND
2016-05-049588-035-1058ND
2016-05-049588-036-1112ND
2016-05-049588-037-1105ND
2016-05-049588-041-1004ND
2016-06-019588-018-0822ND
2016-06-019588-020-0812ND
2016-06-019588-035-1010ND
2016-06-019588-036-0914ND
2016-06-019588-037-0930ND
2016-06-019588-041-0803ND
2016-07-069588-035-1036ND
2016-07-069588-037-1045ND
2016-07-069588-041-0939ND
2016-08-039588-018-0746ND
2016-08-039588-020-0754ND
2016-08-039588-035-0847ND
2016-08-039588-037-0854ND
2016-08-039588-040-0808ND
2016-09-079588-018-0949ND
2016-09-079588-020-0958ND
2016-09-079588-035-1041ND
2016-09-079588-037-1100ND
2016-09-079588-038-1050ND
2016-09-079588-040-1012ND
2016-10-059588-018-0917ND
2016-10-059588-020-0926ND
2016-10-059588-035-1138ND
2016-10-059588-037-1112ND
2016-10-059588-038-1103ND
2016-10-059588-039-0945ND
2016-10-059588-040-0938ND
2016-11-029588-018-1010ND
2016-11-029588-020-1022ND
2016-11-029588-035-1113ND
2016-11-029588-037-1132ND
2016-11-029588-038-1123ND
2016-11-029588-040-1042ND
2016-12-079588-018-1037ND
2016-12-079588-020-1200ND
2016-12-079588-035-0913ND
2016-12-079588-037-0922ND
2016-12-079588-038-0930ND
2016-12-079588-039-1028ND
2016-12-079588-040-1023ND
2017-01-119588-018-0939ND
2017-01-119588-020-0903ND
2017-01-119588-035-1015ND
2017-01-119588-037-1110ND
2017-01-119588-038-1025ND
2017-01-119588-039-0854ND
2017-01-119588-040-0935ND
2017-02-089588-018-0948ND
2017-02-089588-020-0845ND
2017-02-089588-035-1045ND
2017-02-089588-037-1036ND
2017-02-089588-038-1054ND
2017-02-089588-039-0914ND
2017-02-089588-040-0907ND
2017-03-019588-018-0917ND
2017-03-019588-020-0833ND
2017-03-019588-035-1008ND
2017-03-019588-037-1058ND
2017-03-019588-038-1050ND
2017-03-019588-039-0843ND
2017-03-019588-040-0926ND
2017-04-059588-018-0913ND
2017-04-059588-020-0907ND
2017-04-059588-035-1028ND
2017-04-059588-037-1036ND
2017-04-059588-038-1050ND
2017-04-059588-039-0921ND
2017-04-059588-040-0853ND
2017-05-039588-018-0918ND
2017-05-039588-020-0927ND
2017-05-039588-035-1035ND
2017-05-039588-037-1042ND
2017-05-039588-038-1049ND
2017-05-039588-039-0954ND
2017-05-039588-040-0948ND
2017-06-079588-018-0905ND
2017-06-079588-020-0930ND
2017-06-079588-035-1030ND
2017-06-079588-037-1114ND
2017-06-079588-038-1050ND
2017-06-079588-039-0914ND
2017-06-079588-040-0920ND
2017-06-299588-018-0830ND
2017-07-059588-018-0923ND
2017-07-059588-020-0931ND
2017-07-059588-035-1018ND
2017-07-059588-037-1027ND
2017-07-059588-038-1107ND
2017-07-059588-039-0915ND
2017-07-059588-040-0910ND
2017-07-199588-037-0847ND
2017-08-029588-018-0906ND
2017-08-029588-020-0915ND
2017-08-029588-035-1002ND
2017-08-029588-037-1101ND
2017-08-029588-038-1035ND
2017-08-029588-039-0933ND
2017-08-099588-057-1020ND
2017-08-099588-060-0850ND
2017-08-169588-059-1055ND
2017-08-169588-063-1005ND
2017-09-069588-018-0847ND
2017-09-069588-020-0901ND
2017-09-069588-035-0931ND
2017-09-069588-037-0941ND
2017-09-069588-038-0950ND
2017-09-069588-039-0835ND
2017-09-069588-040-0827ND
2017-10-049588-018-0842ND
2017-10-049588-020-0852ND
2017-10-049588-035-1028ND
2017-10-049588-037-1004ND
2017-10-049588-038-1012ND
2017-10-049588-039-0904ND
2017-10-049588-040-0910ND
2017-11-019588-018-0839ND
2017-11-019588-020-0850ND
2017-11-019588-035-0934ND
2017-11-019588-037-0944ND
2017-11-019588-038-0955ND
2017-11-019588-039-0900ND
2017-11-019588-040-0907ND
2017-12-139588-018-0815ND
2017-12-139588-020-0830ND
2017-12-139588-035-1026ND
2017-12-139588-037-1033ND
2017-12-139588-038-1015ND
2017-12-139588-039-0902ND
2017-12-139588-040-0854ND
2018-01-039588-018-0902ND
2018-01-039588-020-0850ND
2018-01-039588-035-0926ND
2018-01-039588-037-1008ND
2018-01-039588-038-0940ND
2018-01-039588-039-0842ND
2018-01-039588-040-0831ND
2018-02-149588-018-0852ND
2018-02-149588-020-0901ND
2018-02-149588-035-1045ND
2018-02-149588-037-1005ND
2018-02-149588-038-0953ND
2018-02-149588-039-0832ND
2018-02-149588-040-0842ND
2018-03-079588-018-0838ND
2018-03-079588-020-0911ND
2018-03-079588-021-0826ND
2018-03-079588-035-0956ND
2018-03-079588-037-1028ND
2018-03-079588-038-1011ND
2018-03-079588-039-0849ND
2018-03-079588-040-0857ND
2018-04-049588-018-0935ND
2018-04-049588-035-1027ND
2018-05-029588-018-0846ND
2018-05-029588-020-0855ND
2018-05-029588-021-0833ND
2018-05-029588-035-1017ND
2018-05-029588-037-1053ND
2018-05-029588-038-1028ND
2018-05-029588-039-0912ND
2018-05-029588-040-0908ND
2018-06-069588-018-0852ND
2018-06-069588-020-0922ND
2018-06-069588-021-0838ND
2018-06-069588-035-1002ND
2018-06-069588-037-1010ND
2018-06-069588-038-1100ND
2018-06-069588-039-0913ND
2018-06-069588-040-0906ND
2018-07-059588-018-0825ND
2018-07-059588-020-0834ND
2018-07-059588-021-0852ND
2018-07-059588-035-1025ND
2018-07-059588-037-1057ND
2018-07-059588-038-1115ND
2018-07-059588-039-0843ND
2018-08-019588-018-0809ND
2018-08-019588-020-0820ND
2018-08-019588-021-0903ND
2018-08-019588-035-0955ND
2018-08-019588-037-0947ND
2018-08-019588-038-1021ND
2018-08-019588-039-0844ND
2018-09-059588-018-0925ND
2018-09-059588-020-0936ND
2018-09-059588-021-0834ND
2018-09-059588-035-1013ND
2018-09-059588-037-1025ND
2018-09-059588-038-1037ND
2018-09-059588-039-0912ND
2018-09-059588-040-0903ND
2018-10-039588-018-0827ND
2018-10-039588-020-0836ND
2018-10-039588-021-0907ND
2018-10-039588-035-1022ND
2018-10-039588-038-1032ND
2018-10-039588-039-0845ND
2018-10-039588-040-0856ND
2018-11-079588-018-0832ND
2018-11-079588-020-0841ND
2018-11-079588-021-0903ND
2018-11-079588-035-1027ND
2018-11-079588-037-1035ND
2018-11-079588-038-1045ND
2018-11-079588-039-0000ND
2018-11-079588-040-0919ND
2018-11-149588-057-1020ND
2018-11-149588-060-0934ND
2018-11-219588-063-0944ND
2018-11-289588-059-1056ND
2018-12-129588-018-0847ND
2018-12-129588-020-0932ND
2018-12-129588-021-0859ND
2018-12-129588-035-1013ND
2018-12-129588-037-0952ND
2018-12-129588-038-1002ND
2018-12-129588-039-0915ND
2018-12-129588-040-0922ND
2019-01-029588-018-0200ND
2019-01-029588-020-0934ND
2019-01-029588-021-0913ND
2019-01-029588-035-1012ND
2019-01-029588-037-1033ND
2019-01-029588-038-1043ND
2019-01-029588-039-0849ND
2019-01-029588-040-0854ND
2019-02-069588-018-0915ND
2019-02-069588-020-0836ND
2019-02-069588-021-0850ND
2019-02-069588-035-1119ND
2019-02-069588-037-1058ND
2019-02-069588-038-1044ND
2019-02-069588-039-0822ND
2019-02-069588-040-0902ND
2019-03-139588-018-0915ND
2019-03-139588-020-0836ND
2019-03-139588-021-0850ND
2019-03-139588-035-1119ND
2019-03-139588-037-1058ND
2019-03-139588-038-1044ND
2019-03-139588-039-0822ND
2019-04-039588-018-0730ND
2019-04-039588-020-0741ND
2019-04-039588-021-0810ND
2019-04-039588-035-1222ND
2019-04-039588-037-1231ND
2019-04-039588-038-1213ND
2019-04-039588-039-0750ND
2019-04-039588-040-0823ND
2019-04-179588-018-0810ND
2019-04-179588-020-0929ND
2019-04-179588-041-1040ND
2019-04-249588-039-1134ND
2019-05-019588-018-0825ND
2019-05-019588-020-0834ND
2019-05-019588-021-0847ND
2019-05-019588-035-1013ND
2019-05-019588-036-1044ND
2019-05-019588-037-1002ND
2019-05-019588-039-0905ND
2019-05-019588-040-0900ND
2019-05-019588-041-0900ND
2019-05-159588-040-1130ND
2019-06-059588-018-0803ND
2019-06-059588-020-0822ND
2019-06-059588-021-0842ND
2019-06-059588-035-1023ND
2019-06-059588-036-1037ND
2019-06-059588-037-1009ND
2019-06-059588-039-0926ND
2019-06-059588-040-0914ND
2019-06-059588-041-0900ND
2019-06-199588-035-1028ND
2019-06-269588-038-1002ND
2019-07-029588-018-0826ND
2019-07-029588-020-1033ND
2019-07-029588-021-0848ND
2019-07-029588-035-1155ND
2019-07-029588-036-1135ND
2019-07-029588-037-1115ND
2019-07-029588-039-1003ND
2019-07-029588-040-0939ND
2019-07-029588-041-0916ND
2019-07-179588-021-1247ND
2019-08-079588-018-0846ND
2019-08-079588-020-0858ND
2019-08-079588-021-0825ND
2019-08-079588-035-1012ND
2019-08-079588-036-1035ND
2019-08-079588-037-1046ND
2019-08-079588-038-1022ND
2019-08-079588-039-0913ND
2019-08-079588-040-0925ND
2019-08-079588-041-0933ND
2019-09-049588-018-1042ND
2019-09-049588-020-1105ND
2019-09-049588-021-1007ND
2019-09-049588-035-1239ND
2019-09-049588-036-1224ND
2019-09-049588-037-1144ND
2019-09-049588-038-1208ND
2019-09-049588-039-0949ND
2019-09-049588-040-0910ND
2019-09-049588-041-0929ND
2019-09-189588-059-1107ND
2019-10-029588-063-1222ND
2019-10-099588-018-0856ND
2019-10-099588-020-0832ND
2019-10-099588-021-0842ND
2019-10-099588-035-1012ND
2019-10-099588-036-1022ND
2019-10-099588-037-1044ND
2019-10-099588-038-1032ND
2019-10-099588-039-0913ND
2019-10-099588-040-0922ND
2019-10-169588-057-1112ND
2019-11-069588-018-0844ND
2019-11-069588-020-0857ND
2019-11-069588-021-0832ND
2019-11-069588-035-1008ND
2019-11-069588-036-1022ND
2019-11-069588-037-1045ND
2019-11-069588-038-1033ND
2019-11-069588-039-0910ND
2019-11-069588-040-0921ND
2019-11-209588-057-1124ND
2019-12-119588-018-0838ND
2019-12-119588-020-0901ND
2019-12-119588-021-0922ND
2019-12-119588-035-1046ND
2019-12-119588-036-1105ND
2019-12-119588-037-1138ND
2019-12-119588-038-1121ND
2019-12-119588-039-1010ND
2019-12-119588-040-0947ND