Know Your Environment. Protect Your Health.

MTBE

Coraopolis Water & Sewer Authority

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.

 

8

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.40 ppb111.40 ppb
20190.900 ppb110.900 ppb
20200.867 ppb32ND - 1.40 ppb
20211.000 ppb111.000 ppb
20220.850 ppb110.850 ppb
20230.900 ppb110.900 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
2018-05-148054022-011.40 ppb
2019-05-309055519-010.900 ppb
2020-04-0722115695.001.40 ppb
2020-05-1922308728.00ND
2020-10-1923269381.001.20 ppb
2021-06-2824921587.001.000 ppb
2022-05-2426742062.000.850 ppb
2023-06-0529679879.000.900 ppb