Know Your Environment. Protect Your Health.

MTBE

Woodville

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.

 

8

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20183.13 ppb332.90 ppb - 3.50 ppb
20193.30 ppb113.30 ppb
20203.30 ppb113.30 ppb
20215.60 ppb115.60 ppb
20225.60 ppb115.60 ppb
20234.10 ppb114.10 ppb

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
2018-01-09AJ763432.90 ppb
2018-04-09AJ870243.00 ppb
2018-07-16AJ943693.50 ppb
2019-05-15AK175993.30 ppb
2020-05-11AK457863.30 ppb
2021-06-21AK778175.60 ppb
2022-03-14AK970645.60 ppb
2023-03-28AL280054.10 ppb