Agenda - Council - 10/08/2019 - Laserfiche WebLink

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As shown in Table C-1 , the Ramsey municipal water supply wells were constructed between 1984 and 2007. Water demand for 2007 through 2017 is shown in the City's draft 2018 Water Supply Plan (Ramsey, 2018a). During that period the City's water annual demand varied between 588 and 704 MGY while the population served increased from 9,702 in 2007 to 13,720 in 2017. The City's total per capita demand between 2007 and 2017 ranged between 122 and 199 gallons per capita per day. The residential per capita demand for the same period ranged from 72 to 120 gallons per capita per day. The City's average day water demand in 2017 was 1.92 MGD and the projected 2030 average day demand is 3.01 MGD (approximately 2,090 gpm) with a projected population served of 22,987. As discussed above, in addition to the City of Ramsey municipal water supply wells 31 other high capacity wells within one mile of the DWSMAs were identified. Information on these 31 high capacity wells is presented in Table C-9. The City is not aware of any current adverse groundwater conflicts or interferences related to the existing Ramsey municipal wells. Construction of other high capacity wells in or near the DWSMAs may influence groundwater flow in the source water aquifer and the groundwater quantity available to the municipal system. Such wells could potentially affect the boundaries of the DWSMAs, which would require the City to update the Wellhead Protection Plan. In addition, such wells could potentially reduce the static levels in the source water aquifer. Issues regarding changes in appropriations resulting from additions or deletions to the current list of water appropriations in and near the DWSMAs will be addressed in the management portion of this Plan. Persistent drought conditions or other water emergencies may also prove to be a threat to the quantity of groundwater available to the municipal system. Under Section 58-118 of the City Code the City can put in place restrictions on water use if it determines that a shortage of water threatens the city. These restrictions may include limits on lawn and garden sprinkling, irrigation, car washing, air conditioning and other uses. In addition, the City has odd -even lawn sprinkling restrictions between 10:00 a.m. and 8:00 p.m. between Memorial Day and Labor Day. Per the city code, the following are exempted from the sprinkling ban: watering of newly sodded lawns for a period of two weeks, hand watering overseeded or spot repaired lawn areas, car washing, filling of children's swimming pools, and children playing in hose operated sprinklers or water toys. The City also requires rain sensors and back flow devices for irrigation systems for townhomes, multifamily residential properties, and commercial properties connected to the municipal water system. Ramsey' current water supply meets the demand of its consumers. The City is confident that the municipal water supply system will continue to have the capability of meeting future demand. C1.5 Water Quality Data Elements Surface water and groundwater quality are discussed in this section. C-9