Know Your Environment. Protect Your Health.

MTBE

Aquarion Water Company of Connecticut - Greenwich System

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
2019ND20ND
2020ND20ND
2021ND20ND
2022ND20ND
2023ND20ND

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
2018-04-02201803873-VOC1ND
2019-04-01201904114-VOC1ND
2019-04-01201904109-VOC1ND
2020-04-06202004726-VOC1ND
2020-04-07202004860-VOC1ND
2021-04-05202104315-VOC1ND
2021-05-10202106584-VOC1ND
2022-04-05202204953-VOC1ND
2022-05-16202207710-VOC1ND
2023-04-03202304838-VOC1ND
2023-06-06202309335-VOC1ND