MTBE
Rio Cosumnes Correctional Center [sws]
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 | 1 | 0 | ND |
| 2019 | ND | 4 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 4 | 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 |
|---|---|---|
| 2018-11-14 | CA3400229_003_003-201811140905 | ND |
| 2019-02-14 | CA3400229_001_001-201902140809 | ND |
| 2019-08-06 | CA3400229_002_002-201908061100 | ND |
| 2019-08-06 | CA3400229_003_003-201908061038 | ND |
| 2019-11-07 | CA3400229_008_008-201911070815 | ND |
| 2020-02-11 | CA3400229_002_002-202002111303 | ND |
| 2021-11-10 | CA3400229_003_003-202111101151 | ND |
| 2022-02-14 | CA3400229_001_001-202202141000 | ND |
| 2022-08-15 | CA3400229_002_002-202208151235 | ND |
| 2022-08-16 | CA3400229_003_003-202208161355 | ND |
| 2022-11-07 | CA3400229_008_008-202211071210 | ND |
| 2023-02-14 | CA3400229_002_002-202302141103 | ND |