Case Study: Cost of a backflow event • Backflow incident from car wash station (Stratford, Ontario, March 2005): ► Car wash cleaning agent entered into the municipal drinking water system causing drinking water contamination. ► Approximately 30,000 people were affected and 19 sought medical attention ► Duration: 3 - 7 days without water ► Cost to Business: The owners of the car wash were ultimately fined $75,000 by the MECP. ► Cost to Tax Payers: This water emergency cost the City approximately $100,000 in staff overtime alone.
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