Know Your Environment. Protect Your Health.

MTBE

Brunswick / Topsham Water District

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.

 

11

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND10ND
2020ND30ND
2021ND10ND
2022ND20ND
2023ND30ND

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
2018-04-181804-01967-001ND
2019-05-151905-01974-001ND
2020-05-042005-00167-002ND
2020-05-042005-00164-002ND
2020-05-042005-00161-002ND
2021-08-312108-05047-001ND
2022-07-182207-03089-001ND
2022-07-21402201615-TSNND
2023-05-022305-00382-001ND
2023-05-022305-00379-001ND
2023-06-202306-04105-001ND