MTBE
Shorelands Road & Water Company
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 | 3 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 3 | 0 | ND |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | ND | 2 | 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 |
|---|---|---|
| 2018-08-20 | CA2300545_001_001-201808200830 | ND |
| 2018-08-20 | CA2300545_007_007-201808200830 | ND |
| 2018-08-20 | CA2300545_010_010-201808200830 | ND |
| 2020-09-21 | CA2300545_006_006-202009210830 | ND |
| 2020-09-21 | CA2300545_004_004-202009210830 | ND |
| 2021-09-08 | CA2300545_001_001-202109080910 | ND |
| 2021-09-08 | CA2300545_007_007-202109080920 | ND |
| 2021-09-08 | CA2300545_010_010-202109080925 | ND |
| 2023-09-12 | CA2300545_004_004-202309121021 | ND |
| 2023-09-12 | CA2300545_006_006-202309121059 | ND |