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Mid-Dakota's water system does not produce enough water to meet the needs of the Pierre. Expanding Mid-Dakota's production capacity would cost more than the proposed Water Treatment Plant.
Pierre's current system provides water that meets all current federal and state drinking water safety standards.
The federal Environment Protection Agency is currently reviewing its regulations. Changes to their regulations may impact Pierre's treatment process, but no regulatory changes have been identified at this time.
Treated water can flow in approximately 2 to 3 years, including approximately 1 year for design, and between 1 and 2 years for construction.
Chlorine is added to the water for disinfection. Fluoride is added to help reduce tooth decay.A phosphate chemical is added to inhibit water discoloration and inhibit corrosion.
The current average concentrations of manganese in Pierre’s current water supply is 2.5 mg/L. The treated water with the proposed treatment plant would have concentrations of manganese less than 0.05 mg/L.
The recommended Treatment Plant location is in the north end of Steamboat Park, just south of the approach to the Missouri River Bridge. An estimated 1 acre will be needed.
The City can use the existing wells for park irrigation. However, the water will still contain high levels of manganese which will stain sidewalks and other buildings near the site of irrigation.