- Officials from the city of Marietta have proposed that Washington County pay for 11.7 percent of the $19 million Marietta Wastewater Treatment Plant upgrade and usage of the plant under a regional sewer agreement. Incorrect information appeared in Friday’s edition of The Marietta Times. The Times regrets this error. Clarifications - Assuming a 3.5 to 4 percent yearly inflation rate, the total probable cost to renovate the former Ohio Bureau of Employment Services building into a new Marietta Municipal Court would have been $3 million in 2000; $3.5 million in 2005; $4.1 million in 2010; and $5 million in 2015, according to the M+A Architects presentation to Marietta City Council’s lands, buildings and parks committee March 3. - Marietta water customers who wish to pay their bills with credit or debit cards, or by e-check, may use a computer station in the water department office on the first floor of 304 Putnam St. There is no public computer station available at city hal.