Quabbin Reservoir

For years, one of the largest, unfiltered water supplies in the country has been keeping much of the Boston area wet – a 412 billion gallon reservoir found in western Massachusetts.But, while one side of the state has reaped plenty of benefits, calls for regional equity have been getting louder on the side of the hosts. On Friday, state water resource officials sat in to hear local concerns.

An excise would be charged to water users in eastern Massachusetts.

Massachusetts officials are urging water conservation after the massive reservoir in the central part of the state that supplies much of greater Boston…