Contact
701-577-7104 (o)
Plant Operations
Curt Clarys; Plant Superindendent
Tyler Fixen; Plant Foreman
Consumer Confidence Reports
How WAWSA Treats Your Water
Missouri River water is treated at the Williston Regional Water Treatment Plant using processes designed to remove contaminants and deliver water that is safe to drink and compliant with the Safe Drinking Water Act. Treatment removes turbidity, hardness, and organic matter; disinfects using chlorine and ultraviolet light to inactivate microorganisms; maintains a chloramine residual through the distribution system; and adjusts fluoride content to meet North Dakota Department of Health recommendations.
Water Quality FAQ
Chlorine and UV light effectively inactivate viruses, bacteria, and protozoans, but chlorine alone can react with organic matter to form regulated byproducts. Adding ammonia to form chloramine maintains a protective residual through the distribution system while limiting byproduct formation.
Yes — coagulation, activated carbon, and the lime softening process together typically remove 40–50% of naturally occurring organic matter.
Treated water leaving the plant does not contain lead. WAWSA monitors lead and copper at sample sites in Williston as required, with recent results below regulatory action levels.
The plant maintains treated water pH between 8.5–9.0 and adds a phosphate chemical that forms a protective layer inside lead pipes and fittings.
Yes — fluoride is maintained between 0.6–0.8 mg/L, within North Dakota Department of Health recommendations for helping prevent dental cavities.