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Eugene -Springfield Area Natural Hazards Mitigation Plan <br />5. Annexes <br />13.1.2 Water System <br />Rainbow provides drinking water to 2,400 residential customers within its county <br />service area in north Springfield. Rainbow also provides wholesale water to the <br />Springfield Utility Board for use by residential, commercial, industrial, and public <br />sector customers inside the city limits. <br />The utility maintains permitted and certificated water rights to use groundwater from <br />eleven wells located at four different wellfield facilities in North Springfield. <br />Groundwater is pumped to the surface and disinfected with chlorine. Transmission <br />piping delivers the treated water to the distribution system for consumption. <br />Chase Well #2 is classified as groundwater under the influence of surface water and <br />receives additional filtration. The Chase Wellfield also raises the pH of the water to <br />reduce the potential for corrosion. The Weyerhaeuser Wellfield is jointly owned and <br />operated by Springfield Utility Board (SUB), and has additional treatment provided by <br />granular activated carbon filters. <br />Rainbow operates two storage reservoirs (Kelly Butte and Moe Hill/Vitus Butte) to <br />store water for fire protection and daily demand in the North System. (Springfield <br />Utility Board is a part owner of Moe Reservoir, and has six other reservoirs to serve <br />other parts of Springfield.) The discharge pressure of the deep well pumps delivers <br />water directly to the reservoirs. Rainbow's annual operating budget is $2.5M. <br />• Reservoirs: 2 (5 million gallons total capacity) <br />• Wells: 11 (including 3 jointly owned with Springfield Utility Board) <br />• Water transmission/distribution system: 12 miles <br />Total value of critical infrastructure and equipment owned by the water district is <br />$9.9M. <br />The estimated value of major water district assets is listed below in Table B-1. <br />Table B-1 Estimated Value of District Assets <br />set <br />E <br />Val <br />Chase Wellfield Water Treatment <br />$ <br />2,876,329 <br />Source of Supply <br />$ <br />2,363,657 <br />Water Transmission & Distribution <br />$ <br />3,144,568 <br />General Plant <br />$ <br />1,520,636 <br />13.1.3 Current and Anticipated Service Trends <br />Rainbow primarily serves single family residential county customers on septic systems. <br />Most new development takes place inside the City of Springfield limits, to allow higher <br />5-24 January 2020 <br />