Know Your Environment. Protect Your Health.

MTBE

West Point, 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.

 

25

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.933 ppb330.650 ppb - 1.33 ppb
20190.503 ppb31ND - 1.51 ppb
20201.02 ppb32ND - 1.78 ppb
20210.887 ppb330.860 ppb - 0.910 ppb
20220.614 ppb54ND - 0.940 ppb
20230.585 ppb87ND - 0.990 ppb

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
2018-01-165308421.33 ppb
2018-09-245719410.650 ppb
2018-09-245719400.820 ppb
2019-01-145925311.51 ppb
2019-09-03630428ND
2019-09-03630429ND
2020-02-106506141.78 ppb
2020-09-146899751.29 ppb
2020-09-14689974ND
2021-01-197130050.910 ppb
2021-09-217644090.860 ppb
2021-09-217644080.890 ppb
2022-01-18778908ND
2022-09-128228770.850 ppb
2022-09-128228780.940 ppb
2022-12-058357900.650 ppb
2022-12-058357890.630 ppb
2023-03-068513860.530 ppb
2023-03-06851387ND
2023-06-198641050.990 ppb
2023-06-198641040.550 ppb
2023-09-068799060.640 ppb
2023-09-068799070.640 ppb
2023-12-058914920.670 ppb
2023-12-058914910.660 ppb