MTBE
Sand Flat Water Supply Corporation
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.
18
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 | 3 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
| 2020 | ND | 3 | 0 | ND |
| 2021 | ND | 3 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 3 | 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 |
|---|---|---|
| 2018-03-05 | Q1808890006 | ND |
| 2018-03-05 | Q1808890008 | ND |
| 2018-03-05 | Q1808890004 | ND |
| 2019-08-22 | Q1958681002 | ND |
| 2019-08-22 | Q1958681004 | ND |
| 2019-08-22 | Q1958681006 | ND |
| 2020-06-11 | Q2023583005 | ND |
| 2020-06-11 | Q2023583007 | ND |
| 2020-10-08 | Q2039611001 | ND |
| 2021-08-05 | Q2120790006 | ND |
| 2021-08-05 | Q2120790010 | ND |
| 2021-08-05 | Q2120790008 | ND |
| 2022-05-19 | Q2214818003 | ND |
| 2022-05-19 | Q2214818005 | ND |
| 2022-05-19 | Q2214818007 | ND |
| 2023-06-01 | Q2320545005 | ND |
| 2023-06-01 | Q2320545007 | ND |
| 2023-06-01 | Q2320545009 | ND |