MTBE
Montgomery County Municipal Utility District 8
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 |
|---|---|---|
| 2018-01-10 | AE08615 | ND |
| 2018-01-10 | AE08627 | ND |
| 2019-08-06 | AE77267 | ND |
| 2019-08-06 | AE77285 | ND |
| 2020-10-19 | AF31112 | ND |
| 2020-10-19 | AF31128 | ND |
| 2021-02-08 | AF43032 | ND |
| 2021-02-08 | AF43034 | ND |
| 2022-08-23 | AG10564 | ND |
| 2022-12-13 | AG21661 | ND |
| 2023-07-05 | AG47059 | ND |
| 2023-07-05 | AG47061 | ND |