MTBE
Fairfield Estates
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.
13
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 2 | 0 | ND |
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 |
|---|---|---|
| 2018-08-14 | AE36947 | ND |
| 2018-08-14 | AE36949 | ND |
| 2019-03-05 | AE57160 | ND |
| 2019-03-05 | AE57170 | ND |
| 2020-08-04 | AF21862 | ND |
| 2020-08-04 | AF21866 | ND |
| 2021-10-13 | AF73342 | ND |
| 2021-10-13 | AF73352 | ND |
| 2022-02-14 | AF84650 | ND |
| 2022-02-14 | AF84668 | ND |
| 2022-06-08 | AG00097 | ND |
| 2023-05-03 | AG39155 | ND |
| 2023-05-03 | AG39161 | ND |