Sharing ideas he collected during three town hall meetings over the past six weeks, former Akron councilman Ernie Tarle told Akron officials this week about his proposals for future city sewer rates.Fees will rise to pay for an overhaul of the city’s aging sewer system. Akron must eliminate sewer overflows that can pollute groundwater.Tarle said about 120 people attended the town halls, and they voted at the final meeting in favor of three main proposals:• Capping sewer/water/trash bills, which Akron bundles, at $150 per household and $100 for seniors and those receiving aid from the state’s Home Energy Assistance Program (HEAP).