MTBE
Sunrise Hill 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.
11
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 | 1 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 3 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 1 | 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 |
|---|---|---|
| 2018-04-17 | 218040483.01 | ND |
| 2019-05-21 | 219050911.01C | ND |
| 2019-10-08 | 219100368.01 | ND |
| 2020-03-02 | 220030017.01 | ND |
| 2020-06-02 | 220060053.01 | ND |
| 2020-09-02 | 220090107.01 | ND |
| 2021-03-03 | 221030072.01 | ND |
| 2022-03-01 | 222030006.01 | ND |
| 2022-09-02 | 222090047-01 | ND |
| 2022-09-02 | 222090047.01 | ND |
| 2023-03-06 | 223030103-01 | ND |