MTBE
Sauk
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.
46
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 | 8 | 0 | ND |
| 2019 | ND | 8 | 0 | ND |
| 2020 | ND | 8 | 0 | ND |
| 2021 | ND | 6 | 0 | ND |
| 2022 | ND | 8 | 0 | ND |
| 2023 | ND | 8 | 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 |
|---|---|---|
| 2018-01-09 | 1801388-001A | ND |
| 2018-01-09 | 1801388-003A | ND |
| 2018-04-24 | 1804G60-001A | ND |
| 2018-04-24 | 1804G60-003A | ND |
| 2018-08-21 | 1808H61-001A | ND |
| 2018-08-21 | 1808H61-003A | ND |
| 2018-11-06 | 1811337-003A | ND |
| 2018-11-06 | 1811337-001A | ND |
| 2019-01-22 | 1901C94-003A | ND |
| 2019-01-22 | 1901C94-001A | ND |
| 2019-04-16 | 1904D38-001A | ND |
| 2019-04-16 | 1904D38-003A | ND |
| 2019-07-23 | 1907I42-001A | ND |
| 2019-07-23 | 1907I42-003A | ND |
| 2019-11-05 | 1911193-003A | ND |
| 2019-11-05 | 1911193-001A | ND |
| 2020-01-07 | 2001280-003A | ND |
| 2020-01-07 | 2001280-001A | ND |
| 2020-05-05 | 2005220-001A | ND |
| 2020-05-05 | 2005220-003A | ND |
| 2020-08-04 | 2008205-003A | ND |
| 2020-08-04 | 2008205-001A | ND |
| 2020-11-10 | 2011772-003A | ND |
| 2020-11-10 | 2011772-001A | ND |
| 2021-02-02 | 2102096-003A | ND |
| 2021-02-02 | 2102096-001A | ND |
| 2021-05-18 | 2105F99-001A | ND |
| 2021-05-18 | 2105F99-003A | ND |
| 2021-08-03 | 2108156-002A | ND |
| 2021-08-03 | 2108156-001A | ND |
| 2022-02-22 | 2202H65-002A | ND |
| 2022-02-22 | 2202H65-001A | ND |
| 2022-05-02 | 2205155-001A | ND |
| 2022-05-03 | 2205155-003A | ND |
| 2022-08-16 | 2208E44-001A | ND |
| 2022-08-16 | 2208E44-003A | ND |
| 2022-11-01 | 2211037-002A | ND |
| 2022-11-01 | 2211037-001A | ND |
| 2023-02-07 | 2302586-001A | ND |
| 2023-02-07 | 2302586-003A | ND |
| 2023-04-18 | 2304D20-001A | ND |
| 2023-04-18 | 2304D20-002A | ND |
| 2023-08-21 | 2308K02-001A | ND |
| 2023-08-21 | 2308K02-002A | ND |
| 2023-10-24 | 2310J12-001A | ND |
| 2023-10-24 | 2310J12-002A | ND |