On June 30, 2017, Missouri American Water requested a general rate increase for water and sewer service.  The request would produce $369 million in gross annual water and sewer revenues for the company and represents a 25.4% increase over current revenues.   The rates as a result of the company’s last request for a general rate increase were effective July 20, 2016.  The company recently stated that a Joplin residential customer’s average usage is 4,75…