A proposal that would more than double the cost of sewer service in the region over the next five years and has drawn the rage of the area’s hospitality and business interests heads to a board for final approval on June 7. The board of directors for Monterey One Water, the regional wastewater management service, will vote on the proposed schedule of rate increases. If approved, ratepayers will see a 47-percent jump in their sewage bills after July 1. By 2025, rates would be 122-percent higher than they are today. … [T]he increase is needed to maintain and update the utility’s $750 million infrastructure assets, some of which are more than 30 years old.