b'W A T E R A N D S E W E RPotable Water 194 regulated water systems (110 Community Water Systems, 9 Non-Transient Non-Community Water Systems, and 75 Transient Non-Community Water Systems) The majority of the 194 water systems rely on ground water wells to provide potable water to residents or employees.Largest Community Water Systems City of Coeur dAlene 10 active wells During scal year 2017-2018 over 4.4 billion gallons of water were pumped The water system has over 18,000 active accountsZone Current Usable Capacity (MG)Upper 2.00General 5.00Stanley Hill 0.16Blackwell Hill 0.00Fernan Hill N/AFIGURE 4. Coeur dAlene Water Storage Capacities 3 City of Post Falls 8 active wells, all drawing from the Rathdrum Prairie Aquifer capable of producing over 21 million gallons per day Storage capacity is currently at 6.25 million gallons which can be supplied to City customers even if there is no power available over 115 miles of water lines 4 emergency connections with other water districts City of Rathdrum 5 active wells, all drawing from the Rathdrum Prairie Aquifer452 I D A H O I N F R A S T R U C T U R E G U I D E B O O K'