Know Your Environment. Protect Your Health.

MTBE

Halifax Water Department

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.

 

39

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20182.24 ppb75ND - 5.30 ppb
20191.12 ppb63ND - 2.80 ppb
20201.18 ppb64ND - 3.00 ppb
20210.250 ppb61ND - 1.50 ppb
20220.757 ppb73ND - 2.10 ppb
20231.37 ppb75ND - 2.10 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
2018-03-232.80 ppb
2018-06-285.30 ppb
2018-09-133.00 ppb
2018-12-183.40 ppb
2018-12-18ND
2018-12-18ND
2018-12-181.20 ppb
2019-03-212.80 ppb
2019-09-242.50 ppb
2019-12-061.40 ppb
2019-12-06ND
2019-12-06ND
2019-12-06ND
2020-03-183.00 ppb
2020-06-301.60 ppb
2020-09-301.30 ppb
2020-12-291.20 ppb
2020-12-29ND
2020-12-29ND
2021-03-30ND
2021-06-30ND
2021-12-291.50 ppb
2021-12-29ND
2021-12-29ND
2021-12-29ND
2022-03-30ND
2022-06-291.30 ppb
2022-09-132.10 ppb
2022-12-16ND
2022-12-16ND
2022-12-161.90 ppb
2022-12-16ND
2023-03-291.80 ppb
2023-06-292.00 ppb
2023-09-201.80 ppb
2023-12-27ND
2023-12-272.10 ppb
2023-12-27ND
2023-12-271.90 ppb