MTBE
Town of Woodsboro
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.
7
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 | ND | 3 | 0 | ND |
| 2020 | 1.36 ppb | 1 | 1 | 1.36 ppb |
| 2021 | 0.760 ppb | 1 | 1 | 0.760 ppb |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | ND | 1 | 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 |
|---|---|---|
| 2018-03-14 | E18003358010 | ND |
| 2019-05-30 | E19004087001 | ND |
| 2019-05-30 | E19004087004 | ND |
| 2019-05-30 | E19004087006 | ND |
| 2020-09-28 | E21000861004 | 1.36 ppb |
| 2021-06-30 | E22000009001 | 0.760 ppb |
| 2023-08-29 | E2400077101 | ND |