2006 Water Comprehensive Plan - City of Bellevue

Inlet & Customer Meter Inaccuracies: Meter inaccuracies do not reflect actual water loss,but rather result in revenue losses. The report recommended purchase of testing andcalibration equipment, development of SOPs for routine testing and calibration of inletmeters; and increased investment in customer meter replacements, particularly for highvolume commercial meters.Billing Adjustments: Similar to inaccurate meters, billing adjustments do not reflect actual“lost” water, but may increase the volume of non-revenue water and hence affect utilityrevenues. The new CIS billing system implemented in 2004 will address the potential for“paper” losses associated with billing adjustments.Non-Revenue Water used for Miscellaneous Activities: The report evaluated the volumesof water used for operational activities, utility project construction, and firefighting. Itconcluded approximately $72,000 of water purchased from SPU is consumed for these usesannually (approximately 1.0%, or 60 million gallons). The recommendation was to formallyrecognize this as an inherent cost of doing business.FUTURE DEMAND PROJECTIONSFuture demand projections were used to evaluate the existing water system and identify requiredimprovements. Projecting the demands for the City of Bellevue system required considerationof:• Current billing and consumption records• Land use and zoning information• Population projections• Expansion plans for major industrial users• Information from the City of Redmond on future water supply projections• Interlocal agreement limitations on the number of living units Issaquah canconnect to the area supplied by Bellevue4-6