Utility Committee Agenda and Packet 2019 03 15

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CitVot Louisville COLORADO • SINCE 1878 Memorandum I Department of Public Works To: Utility Committee From: Cory Peterson, Water Resources Engineer Date: 3/15/19 Re: Reclaim Water Rate Risk Mitigation: One of the goals of the Utility is to mitigate risk to the City's water supply and ensure a reliable and resilient system. Drought has the greatest risk impacts to water supplies. To alleviate drought impacts, the City developed an alternative water source by joining Northern Water and making significant capital investment in the acquisition of Colorado -Big Thompson and Windy Gap water rights. To further combat drought impacts, the City constructed a reclaim system in 2004. The reclaim system was in direct response to the 2002/2003 drought in providing an immediate and consistent supply. The new reclaim system allowed for the City to optimize the water rights portfolio and provided increasing value as a backup supply in the catastrophic instant when firm yield supplies begin to degrade and break down. The reclaim system continues to function in this role and is a valuable asset for the City. Cost of Service: Given the impacts of secondary treatment, reclaim water has a higher cost of service than that of potable water. Public Works recently performed and presented a cost of service analysis that highlighted reclaim rates that range from $4.60 to $15.04 per thousand gallons as presented below. Reclaim Usage with Calculated Rates WY .mrssnq'Pr2 1,:mala IcnrimfYnrl1.11 "rYR•al a. Ionia Frr S+fau. G. rmw IS _._ unru 5d2 .11 .r. PM 26561 islLMS 221 511191411 1..r11YL I.0w, U a•.•. war ILa1 .11 N..« 11 N1rr 111n11d60r1 W.W.I.. 57.321.n.wtl ji.ti Y4 1Pdw.WM ;1-{1+NW� 11: 1 ' 11= I 4 1 I .- i 7a 1 f 4 2 a W a 'c 1 T i 4 . Tu a r 1�jI ]1G �1 j j >tYa j >ta.3 a63 1V11 Jo, . IDlT i ,: ][91 V Rafe par 1,000 gip lions lilph Usague Avg Usag, Low Usage 75% Residential 75% Commercial 100% Resident."' 100%Commercial 54.10 $2.27 $5,47 $3.02 9