Know Your Environment. Protect Your Health.

MTBE

CTWC - Naugatuck Region-Central 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.

 

9

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND10ND
2020ND10ND
2021ND10ND
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

Date Lab ID Result
2018-01-15BZ72858VOC1ND
2018-02-13BZ88506VOC1ND
2018-05-21CA50441VOC1ND
2018-06-11CA67845VOC1ND
2019-02-12VOC1 200521378ND
2020-01-14VOC1 200563046ND
2021-04-06VOC1 200611963ND
2022-02-14CK66671ND
2023-01-16CN24827ND