Engineer: City sewer revamp will cost millions

The wastewater treatment plant that takes care of all the sewage from Grand Coulee and Electric City has been in operation continually since 1985, treating 127 gallons a minute on average.

The two cities have not grown out of it capacity-wise, but it’s “aging out” and needs an update, according to consulting engineering firm Gray and Osborne, which is working on a plan to update for the next 20 ye...