Know Your Environment. Protect Your Health.

MTBE

Enclave At Boxborough

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
2018N/A00N/A
2019N/A00N/A
2020N/A00N/A
2021ND10ND
2022ND40ND
20230.170 ppb54ND - 0.250 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 Result
2021-11-30ND
2022-02-28ND
2022-06-09ND
2022-06-09ND
2022-06-09ND
2023-03-09ND
2023-04-060.220 ppb
2023-04-060.200 ppb
2023-04-060.180 ppb
2023-04-060.250 ppb