Know Your Environment. Protect Your Health.

MTBE

Kalona Water Department

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.

 

17

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.25 ppb221.20 ppb - 1.30 ppb
20191.37 ppb331.000 ppb - 1.60 ppb
20201.45 ppb440.600 ppb - 1.80 ppb
20211.68 ppb441.40 ppb - 2.20 ppb
20221.40 ppb331.40 ppb
20231.90 ppb111.90 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
2018-08-15OE6993291.30 ppb
2018-08-15OE6993281.20 ppb
2019-01-25OE7643241.000 ppb
2019-08-12OE8487251.50 ppb
2019-08-12OE8487261.60 ppb
2020-01-27OE9210120.600 ppb
2020-08-06OE11622071.80 ppb
2020-08-06OE11622081.70 ppb
2020-10-22OE13583881.70 ppb
2021-01-14OE15460192.20 ppb
2021-08-10OE17901251.40 ppb
2021-08-10OE17901261.40 ppb
2021-10-05OE18763951.70 ppb
2022-08-15OE21546981.40 ppb
2022-08-15OE21546991.40 ppb
2022-10-20OE21933451.40 ppb
2023-10-12OE23499241.90 ppb