MTBE

City of Jacksonville

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.

MORE ABOUT THIS CONTAMINANT

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Range of results
2014	ND	1	ND
2015	ND	8	ND
2016	ND	8	ND
2017	ND	6	ND
2018	ND	5	ND
2019	ND	6	ND

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
2014-07-17	Q1428830001	ND
2015-02-04	Q1504457005	ND
2015-02-04	Q1504457004	ND
2015-02-04	Q1504457001	ND
2015-04-30	Q1516039005	ND
2015-04-30	Q1516039004	ND
2015-07-28	Q1529280005	ND
2015-09-14	Q1535516002	ND
2015-10-16	Q1540896006	ND
2016-01-12	Q1600962019	ND
2016-01-12	Q1600962017	ND
2016-01-12	Q1600962014	ND
2016-01-12	Q1600962012	ND
2016-01-12	Q1600962020	ND
2016-09-09	Q1636787004	ND
2016-09-09	Q1636787001	ND
2016-10-31	Q1646469005	ND
2017-03-07	Q1709412009	ND
2017-03-07	Q1709412008	ND
2017-03-07	Q1709412005	ND
2017-03-07	Q1709412003	ND
2017-03-07	Q1709412002	ND
2017-09-21	Q1745893001	ND
2018-09-13	Q1836630003	ND
2018-11-12	Q1845099015	ND
2018-11-12	Q1845099003	ND
2018-11-12	Q1845099007	ND
2018-11-12	Q1845099011	ND
2019-01-30	Q1904613019	ND
2019-01-30	Q1904613017	ND
2019-01-30	Q1904613016	ND
2019-01-30	Q1904613014	ND
2019-07-02	Q1941674001	ND
2019-07-02	Q1941674003	ND