MTBE
Spanish Flat Water District
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.
10
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 | N/A | 0 | 0 | N/A |
| 2020 | ND | 6 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2018-07-17 | CA2810014_001_001-201807171000 | ND |
| 2020-09-11 | CA2810014_DST_003-202009111135 | ND |
| 2020-10-15 | CA2810014_DST_003-202010151200 | ND |
| 2020-10-15 | CA2810014_DST_003-202010151230 | ND |
| 2020-10-15 | CA2810014_DST_003-202010151245 | ND |
| 2020-12-07 | CA2810014_DST_003-202012071100 | ND |
| 2020-12-07 | CA2810014_DST_003-202012071115 | ND |
| 2021-04-30 | CA2810014_DST_003-202104300930 | ND |
| 2021-05-20 | CA2810014_DST_003-202105200930 | ND |
| 2022-12-12 | CA2810014_001_001-202212120930 | ND |