MTBE
Chambers, Village of
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.
8
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 | 0.260 ppb | 2 | 1 | ND - 0.519 ppb |
| 2019 | ND | 1 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | 3.87 ppb | 2 | 1 | ND - 7.74 ppb |
| 2022 | ND | 1 | 0 | ND |
| 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 |
|---|---|---|
| 2018-01-16 | 530812 | 0.519 ppb |
| 2018-05-21 | 542551 | ND |
| 2019-01-23 | 592449 | ND |
| 2020-01-21 | 650582 | ND |
| 2021-01-19 | 712988 | 7.74 ppb |
| 2021-05-24 | 729310 | ND |
| 2022-01-03 | 778892 | ND |
| 2023-01-17 | 841989 | ND |