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[Photograph 2012.201.OVZ001.8209]

Description: Photograph used for a story in the Oklahoma City Times newspaper. Caption: "A water filtration plant, almost identical to this one at Lake Hefner, is included in a $55 million proposal to pump waters of southeastern Oklahoma into the city system."
Date: May 3, 1960
Creator: Lucas, Jim
Partner: Oklahoma Historical Society

[Photograph 2012.201.OVZ001.8212]

Description: Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Both exterior and interior of the Lake Hefner filter plant are practically completed, but it will be the latter part of May before test runs can be made at the plant, M. B. Cunningham, city water superindendent, said Saturday. Started last May, witht the completion date set for December, contractors asked for an extension due to material shortage. the completion date was set for February. then came the strikes. Because of them, it is estimated that the machinery cannot be delivered and installed before early summer. When in operation, the plant will have a capacity of 15 million gallons of water per day. the Oklahoma City water consumption rate is 18 million gallons in winter and 30 million in summer. With the old filter plant at NW 5 and Pennsylvania still operating, Oklahoma City will have plenty of water."
Date: February 19, 1946
Creator: Cobb, Richard
Partner: Oklahoma Historical Society

[Photograph 2012.201.OVZ001.8206]

Description: Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "(photo of the insides of a treatment plant section, left side has raised floor with slots, along the raised floor wall is instrunments on small tables, man wearing a hat at a table, middle is an open floor, and more)"
Date: April 14, 1954
Creator: Cobb, Richard
Partner: Oklahoma Historical Society

[Photograph 2012.201.OVZ001.8210]

Description: Photograph used for a story in the Oklahoma City Times newspaper. Caption: "Running water in the home is something most city dwellers take for granted. But the process of getting it there is more involved than turning on a faucet. Oklahoma City water users are served by two lakes, 195 wells used for emergency in dry weather, two water treatment plants, about 300 workers who keep the system operating and see that the bills are paid, pumping stations, storage tanks and more than 1,000 miles of water mains through which the vital product flows from plant to home or industry...............Frank Taylor, filtration engineer with the city water department, empasizes that chemicals are added to the water to take other unwanted or unhealthy substances out. Chlorine is used to sterilize the water and reduce taste and odor. Lime is added to help soften the water and alum to help settle suspended matter. Every pound of chemicals added to the water removes 2 1/2 pounds of dissolved solids, Taylor said......Oklahoma City's two lakes have a capacity of about 90,000 acre feet of water. An acre foot is the amount of water it takes to cover one acre to a depth of one foot and is roughly one-third og a million gallons. The two plants process an average of about 30 million gallons of water a day, but on peak days - usually in mid-summer - the production sometimes reaches as high as 60 million gallons a day, Taylor said. The two plants are capable of producing between 65 to 70 million gallons a day...That's why other sources of water supply are necessary. The Atokia reservoir, larger than Hefner and Overholser combined, is to contain 125,000 acre feet of water when full and has now reached nearly 100,000 acre feet...And the Atokia Reservoir ...
Date: January 25, 1960
Creator: Cobb, Dick
Partner: Oklahoma Historical Society

[Photograph 2012.201.OVZ001.8211]

Description: Photograph used for a story in the Oklahoma City Times newspaper. Caption: "Take a look some time at Lake Hefner - big, broad, fish-filled, mud-bottomed, various weeds and big chunks of rocks - and wonder how that mess manages to come out the clear liquid in your tap? It's a long process and a thankless one for the Oklahoma City water department. When inourities cause them to raise the chlorine contentm hall's phone start ringing. When the current strange taste sneaks into the taps, there are more complaints. Did you ever wonder just what the city does to water from the time it leaves the lake till it arrives in the tap? Quite A Bit. Look down from the big rolled earth dams at the collection of ponds and buildingsjust north of the lake. This is the Lake Hefner water treatment plant. It's an efficient place, and awesome to see when you're inside. You wander in the front door and get the impression you're in a cathederal.........To begin with, where does the water come from? Every drop (except rain taht hits the lake) comes from the North Canadian river. Surface runoff in the vicinty of Lake Hefner doesn't enter the lake. It's diverted by means of a ditch surrounding the lake. The water enters the lake via the long-familiar channel from NW 39 and Overholser drive cross-country...Following chlorination, the water gets a dose of activated carbon, lime and alum. Lime is a softening agent. The North Canadian flows through some strange country, picking up some strange minerals along the way. Lime takes care of them. Alum (which, rest assured, doesn't stay in the water) removes crud. The mouth-puckering chemical has a tendency to collect solid matter suspended in the water. Then the whole mess is tossed into a big mixer, ...
Date: September 10, 1958
Creator: Lucas, Jim
Partner: Oklahoma Historical Society

[Photograph 2012.201.OVZ001.8208]

Description: Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "(inside photo building construction with two guys working on a lowered floor with slots on the right, four guys in the middle background with a wheelbarrel, and more. Backside handwriting: "Interior Lake Hefner Filter Plant.")"
Date: February 19, 1946
Creator: Cobb, Richard
Partner: Oklahoma Historical Society

[Photograph 2012.201.OVZ001.8205]

Description: Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "(photo of the insides of a treatment plant section, right side has raised floor with slots, middle is an open floor, along the raised floor wall is instrunments on small tables, and more)"
Date: April 14, 1954
Creator: Cobb, Richard
Partner: Oklahoma Historical Society

[Photograph 2012.201.OVZ001.8207]

Description: Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "(aerial photo of a plant with three in-ground tanks on the left, the buildings in the middle, two standing water towers on the right, other parts of equipment around, open land encircling the plant, and more. Backside handwriting: "Filtration Plant Hefner.")"
Date: 1954
Creator: Killian, Thomas F.
Partner: Oklahoma Historical Society