Know Your Environment. Protect Your Health.

MTBE

Nokomis

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.

 

22

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND40ND
2020ND20ND
2021ND40ND
2022ND40ND
2023ND40ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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
2018-02-278024299-01ND
2018-05-298054925-01ND
2018-09-128092353-01ND
2018-11-078111674-01ND
2019-02-199023188-01ND
2019-06-049060831-01ND
2019-07-259075349-01ND
2019-10-159103590-01ND
2020-02-120022488-01ND
2020-04-070041452-01ND
2021-03-18EC03922-01ND
2021-05-28EE05532-01ND
2021-08-19EH04492-01ND
2021-10-20EJ04333-01ND
2022-03-10FC02417-01ND
2022-06-28FF05319-01ND
2022-09-15FI03132-01ND
2022-12-15FL03384-01ND
2023-03-16GC03092-01ND
2023-06-22GF04250-01ND
2023-09-21GI03909-01ND
2023-12-28GL04623-01ND