MTBE
Tahoe Keys 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.
14
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 | ND | 5 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 5 | 0 | ND |
| 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 |
|---|---|---|
| 2019-06-20 | CA0910015_001_001-201906200800 | ND |
| 2019-06-20 | CA0910015_002_002-201906200830 | ND |
| 2019-06-20 | CA0910015_003_003-201906200900 | ND |
| 2019-07-16 | CA0910015_006_006-201907160940 | ND |
| 2019-07-16 | CA0910015_002_002-201907160910 | ND |
| 2021-01-12 | CA0910015_001_001-202101120830 | ND |
| 2021-01-19 | CA0910015_003_003-202101190830 | ND |
| 2022-02-16 | CA0910015_002_002-202202161200 | ND |
| 2022-02-16 | CA0910015_001_001-202202161100 | ND |
| 2022-02-16 | CA0910015_003_003-202202161000 | ND |
| 2022-06-07 | CA0910015_010_010-202206070925 | ND |
| 2022-06-07 | CA0910015_002_002-202206070925 | ND |
| 2023-11-14 | CA0910015_002_002-202311140915 | ND |
| 2023-11-14 | CA0910015_007_007-202311140915 | ND |