Elmer City may test a force main that carries wastewater to Coulee Dam’s treatment plant to see how long the 40-year-old cast iron pipe is likely to last.

The town applied for a grant of $30,000 for the test, which would help nail down the cost of a possible switch from using Coulee Dam’s to building Elmer City’s own treatment facility.

Engineer Nancy Wetch, of Gray and Osborne, went over...