MTBE
Bryants Creek Subdivision
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.
28
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 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | ND | 4 | 0 | ND |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | ND | 24 | 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 |
|---|---|---|
| 2020-02-02 | AD60441 | ND |
| 2020-02-02 | AD60439 | ND |
| 2020-02-02 | AD60438 | ND |
| 2020-02-02 | AD60440 | ND |
| 2023-01-31 | 2223851 | ND |
| 2023-01-31 | 2223850 | ND |
| 2023-01-31 | 2223849 | ND |
| 2023-01-31 | 2223848 | ND |
| 2023-02-22 | 2301504 | ND |
| 2023-02-22 | 2301501 | ND |
| 2023-02-22 | 2301502 | ND |
| 2023-02-22 | 2301503 | ND |
| 2023-06-05 | 2303971 | ND |
| 2023-06-05 | 2303974 | ND |
| 2023-06-05 | 2303972 | ND |
| 2023-06-14 | 2310835 | ND |
| 2023-06-20 | 2310891 | ND |
| 2023-06-20 | 2310890 | ND |
| 2023-06-20 | 2310888 | ND |
| 2023-06-20 | 2310889 | ND |
| 2023-09-19 | 2312323 | ND |
| 2023-09-19 | 2312324 | ND |
| 2023-09-20 | 2312326 | ND |
| 2023-09-20 | 2312325 | ND |
| 2023-11-08 | 2317365 | ND |
| 2023-11-08 | 2317367 | ND |
| 2023-11-08 | 2317368 | ND |
| 2023-11-08 | 2317366 | ND |