MTBE
Mount Houston Road Municipal Utility 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.
12
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 | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 2 | 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 |
|---|---|---|
| 2018-06-18 | AE30242 | ND |
| 2018-06-18 | AE30246 | ND |
| 2019-07-15 | AE74415 | ND |
| 2019-07-15 | AE74417 | ND |
| 2020-07-09 | AF18907 | ND |
| 2020-07-09 | AF18911 | ND |
| 2021-06-14 | AF57828 | ND |
| 2021-06-14 | AF57830 | ND |
| 2022-05-05 | AF95728 | ND |
| 2022-05-05 | AF95730 | ND |
| 2023-06-01 | AG42806 | ND |
| 2023-11-09 | AG63063 | ND |