Members of the Newmarket Town Council and the New Hampshire EPA are demanding more evidence from Hydra Renewable Resources on their plan to build a new water treatment facility that they claim won’t cost tax payers a dime. That plan calls for a $116 million dollar facility to be built, that would serve as a wastewater treatment plant and would also process garbage and wastewater and turn it into energy. The idea is that the fuel created would eventually turn a profit, which would pay for that facility. However, components in that plan have never been tested and town officials are weary of its chances of success. The state department of Environmental Services is requiring that Hydra undertake a test pilot program before they would be willing to sign off on that design.  Hydra wants the Newmarket Town council to sign an agreement authorizing a feasibility study that would cost $500,000 that Hydra would finance. Members of the Great Bay Coalition are meeting today at the McConnell Center in Dover to discuss environmental conditions of the Great Bay Estuary and an update on the Coalitions activities.