Know Your Environment. Protect Your Health.

MTBE

Elsberry PWS

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.

 

11

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
20192.52 ppb112.52 ppb
2020N/A00N/A
20212.51 ppb32ND - 3.85 ppb
20220.703 ppb31ND - 2.11 ppb
20232.40 ppb32ND - 3.63 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
2018-05-14AD18724ND
2019-04-24AD468272.52 ppb
2021-04-2721041943.69 ppb
2021-04-272104195ND
2021-04-2721041963.85 ppb
2022-04-212204849ND
2022-04-212204848ND
2022-04-2122048502.11 ppb
2023-04-1923038973.63 ppb
2023-04-1923038953.57 ppb
2023-04-192303896ND