MTBE
Woodlake, City 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.
29
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 | 7 | 0 | ND |
| 2019 | ND | 8 | 0 | ND |
| 2020 | ND | 7 | 0 | ND |
| 2021 | ND | 5 | 0 | ND |
| 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 |
|---|---|---|
| 2018-02-27 | CA5410020_009_009-201802271430 | ND |
| 2018-02-27 | CA5410020_010_010-201802271418 | ND |
| 2018-06-28 | CA5410020_010_010-201806281355 | ND |
| 2018-06-28 | CA5410020_009_009-201806281344 | ND |
| 2018-09-20 | CA5410020_010_010-201809201140 | ND |
| 2018-09-20 | CA5410020_009_009-201809201154 | ND |
| 2018-12-28 | CA5410020_009_009-201812281305 | ND |
| 2019-03-11 | CA5410020_010_010-201903111250 | ND |
| 2019-03-11 | CA5410020_009_009-201903111238 | ND |
| 2019-05-07 | CA5410020_010_010-201905071315 | ND |
| 2019-05-07 | CA5410020_009_009-201905071340 | ND |
| 2019-08-22 | CA5410020_010_010-201908221315 | ND |
| 2019-08-22 | CA5410020_009_009-201908221331 | ND |
| 2019-11-26 | CA5410020_009_009-201911261340 | ND |
| 2019-11-26 | CA5410020_010_010-201911261325 | ND |
| 2020-09-15 | CA5410020_010_010-202009151144 | ND |
| 2020-09-15 | CA5410020_005_005-202009151220 | ND |
| 2020-09-15 | CA5410020_006_006-202009151202 | ND |
| 2020-09-15 | CA5410020_008_008-202009151125 | ND |
| 2020-09-15 | CA5410020_009_009-202009151138 | ND |
| 2020-12-08 | CA5410020_004_004-202012081250 | ND |
| 2020-12-08 | CA5410020_007_007-202012081305 | ND |
| 2021-02-22 | CA5410020_007_007-202102221118 | ND |
| 2021-02-22 | CA5410020_004_004-202102221134 | ND |
| 2021-08-31 | CA5410020_005_005-202108311010 | ND |
| 2021-08-31 | CA5410020_009_009-202108311119 | ND |
| 2021-08-31 | CA5410020_010_010-202108311128 | ND |
| 2022-09-27 | CA5410020_008_008-202209271225 | ND |
| 2023-08-15 | CA5410020_006_006-202308151200 | ND |