MTBE
Lockesburg Waterworks
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.
9
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 | 2 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2018-07-24 | 18207001201 | ND |
| 2019-02-04 | 19038002601 | ND |
| 2019-08-19 | 19233000908 | ND |
| 2020-02-03 | 20037001701 | ND |
| 2020-08-17 | 20233006101 | ND |
| 2021-01-27 | 21028010701 | ND |
| 2022-01-11 | 22013001901 | ND |
| 2022-04-06 | O196357-VOC-1 | ND |
| 2022-07-19 | O199847-VOC-1 | ND |