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Wyoming Water Development Commission 
Harry C. LaBonde, Jr., PE, Director 
6920 Yellowtail Rd, Cheyenne, WY 82002 
Phone: 307-777-7626 

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 26. PROJECT:Edgerton/Midwest Water Supply
SPONSOR:Salt Creek Joint Powers Board
LOCATION:Natrona County
Purpose Chapter Session Account Appropriation Due Date
Level III 28 1992 II $3,750,000* 1997
*50% grant

Edgerton obtains municipal water from six wells which produce poor quality water. The supply is decreasing. Midwest pumps water from the North Platte River. The pipeline is in poor condition and requires considerable repair each year. Midwest and Edgerton, with 1990 populations of 495 and 247 respectively, are only one mile apart; therefore, a common water supply system is the most economical alternative.

In 1988, a WWDC study concluded that expanding Midwest's existing delivery system to both towns was the most favorable surface water option. The cost of these improvements was estimated at $10,000,000. Improved treatment facilities added approximately $500,000 to the overall project cost. User costs under this alternative would exceed $50.00 per tap per month. This cost was unacceptable to the towns.

In 1989, the WWDC evaluated groundwater supplies in the area. A 15-well supply system was found to be more expensive than replacing the Platte River pipeline.

A WWDC study conducted in 1990 developed conceptual plans for a reverse osmosis (RO) water treatment plant to treat the hot and saline water from an existing Madison well. Construction costs of this alternative would be lower than the North Platte River pipeline. However, the RO alternative has higher operation and maintenance costs. The WWDC study estimated that costs of operating the RO plant would be $35 to $40 per month per tap. This cost was unacceptable to the towns.

During 1991, the WWDC evaluated a "least cost" system to deliver and treat water from the North Platte River. Due to the decline in area population, the system was sized at 300 gpm. Combined with existing water storage in the area, this system will meet existing demands of both towns. The estimated construction cost of rehabilitating the pipeline is $7,500,000.

In 1992, the joint powers board applied to the Farmer's Home Administration to secure the matching funds for the WWDC grant. During the 1993 Session, the legislature amended the project statutes to allow the appropriation to be used to fund a groundwater system or a pipeline from the North Platte River, subject to the review of the WWDC and Select Water Committee. In January, 1994, the Farmer's Home Administration advised that funds had been secured to match the WWDC project appropriation for the construction of the North Platte Pipeline.

The citizens of Edgerton and Midwest overwhelmingly passed a bond issue in August, 1994 and the WWDC and Select Water Committee adopted the North Platte River pipeline as the most feasible water supply alternative for the towns. The Salt Creek Joint Powers Board became a member of the Natrona County Regional System Joint Powers Board and will purchase treated water through the regional water system. The project has been designed and a two phase construction program was recommended. The first phase construction has been completed and is ready to be placed into operation. The second phase will be completed early in 1997.

No legislative action is recommended on this project.

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