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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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 91. PROJECT:Opal Regional Water Supply
SPONSOR:Town of Opal
LOCATION:Lincoln County
PROGRAM:New Development
Purpose Chapter Session Account Appropriation Due Date
Level II 268 1989 I $70,000 1990
Level II 36 2000 I $30,000 2002
Level II 86 2001 I $90,000 2002

In 1999, the town of Opal requested a feasibility study for the costs associated with installing and maintaining a water treatment unit to reduce or eliminate excessive fluoride present in Opal's drinking water. This report was completed in November 2000. The report indicated that installation costs were affordable, but the annual operation and maintenance cost would be approximately $11,000 per year.

The town of Opal requested an additional study to determine the feasibility of obtaining a new groundwater source, which would be blended with their existing water supply to dilute the fluoride concentrations and thereby addressing the EPA Administrative Order recently issued relative to the Safe Drinking Water Act violations. A groundwater study was completed and the results indicated there was no viable source that would serve to blend with the existing town's supply. The study also investigated "point-of-use" treatment by installation of individual reverse-osmosis units in town residences. The costs associated with this type of treatment were much less than a central treatment facility. The town has elected to pursue "point-of-use" treatment and is presently conferring with EPA-Region VII on implementation.

No legislative action required.

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