Water News August - September, 1998 Project Photos Project Information

Projects underscore a commitment to quality Construction under way at Marston Treatment Plant on West Quincy Avenue in southwest Denver is part of a continuing commitment by Denver Water to keep drinking water clean and safe. New Solids Handling Plant Since the Marston plant was completed in 1925, solids removed from the water in the treatment process have been recirculated into Marston Reservoir. That practice held costs down but led to seasonal problems with taste and order. A new $5 million Solids Handling Facility will remove free water from the mixture and allow Denver Water to truck the sludge to drying beds at the Foothills Treatment Plant. The facility will begin operations in September. Re-engineered Disinfection Process Recent studies indicate increased concerns about by-products formed when chlorine disinfectants react with organics found in river water. Denver Water is revamping its three treatment plants, starting with at Marston, to move the disinfection process to the end of the treatment chain, where most organics have been removed from the water. That step will reduce the formation of such by-products. The $8.5 million program was approved by the Water Board to address clean water standards as well as to streamline piping systems at the Marston, Foothills and Moffat plants. Why Take These Steps Now? Denver Water strives to anticipate conclusions based on health and treatment research. Efforts are made to keep costs and water rates low, but not at the cost of compromising the safety of our treated water and the health of our customers. Improving solids handling at Marston and changing the disinfection point at all of our treatment plants are steps that will put our plants in a position to meet regulations that we foresee being tightened in the future. DENVER WATER COMMISSIONERS Denise Maes, President    Joe Shoemaker, 1st Vice President Richard Kirk, Ronald Lehr, Bill Roberts

BOSCO CONSTRUCTORS, INC. 10 Inverness Drive East, Suite 100 Englewood, Colorado 80112 Phone: 303-799-1221 Fax: 303-799-4544 E-Mail: bosco@relay.hcp.net