Know Your Environment. Protect Your Health.

MTBE

Hanson Water Department

NOTE: Hanson Water Department purchases water from Brockton Water Commission which is required to test for mtbe. Sample information shown below was taken by Brockton Water Commission.

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND60ND
2019ND60ND
2020ND50ND
2021ND70ND
2022ND10ND
2023ND10ND

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

NOTE: Hanson Water Department purchases water from Brockton Water Commission which is required to test for mtbe. Sample information shown below was taken by Brockton Water Commission.

Date Result
2018-03-06ND
2018-03-06ND
2019-03-11ND
2019-03-12ND
2020-03-10ND
2020-03-24ND
2021-03-03ND
2021-04-16ND
2022-03-02ND
2023-03-01ND