Ethanol replaced MBTE. MBTE is awful (any persistent groundwater contaminant is awful) and it's a good thing it's gone. Higher percentages of ethanol are argua

Ethanol replaced MBTE. MBTE is awful (any persistent groundwater contaminant is awful) and it's a good thing it's gone. Higher percentages of ethanol are arguably not worthwhile, but getting rid of MBTE is almost certainly the right choice.