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Water Supply Requirements

Water Supply Requirements. Water Supply Background – Colorado Revised Statues Colorado Revised Statues – Title 29 Government – Local – Land Use Control and Conservation – Adequate Water Supply (Excerpts below ) Title 29-20-303(1) – Adequate water supply for development

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Water Supply Requirements

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  1. Water Supply Requirements

  2. Water Supply Background – Colorado Revised Statues Colorado Revised Statues – Title 29 Government – Local – Land Use Control and Conservation – Adequate Water Supply (Excerpts below) Title 29-20-303(1) – Adequate water supply for development (1)  A local government shall not approve an application for a development permit unless it determines in its sole discretion, after considering the application and all of the information provided, that the applicant has satisfactorily demonstrated that the proposed water supply will be adequate… Title 29-20-103 – Definitions – Development Permit (1) "Development permit" means any preliminary or final approval of an application for rezoning, planned unit development, conditional or special use permit, subdivision, development or site plan, or similar application for new construction… Title 29-20-302 – Definitions – Adequate Water Supply (1) Adequate" means a water supply that will be sufficient for build-out of the proposed development in terms of quality, quantity, dependability, and availability to provide a supply of water for the type of development proposed, and may include reasonable conservation measures and water demand management measures to account for hydrologic variability.

  3. Water Supply Background – Comprehensive Plan Jefferson County Comprehensive Master Plan (Excerpts below) Goals - Water and Wastewater (page 49) • Protect the quality and quantity of water resources in County. • Ensure that New Development has appropriate water service and wastewater treatment. • Manage the use of wells on OWTSs to ensure that the quality and quality of water resources are sustained and human health and the environment are protected. Policies - Water Quantity (page 49) • Applications for New Development should demonstrate that water is adequate and available for the use proposed, including any watering for outside uses such as landscaping or livestock. • New Development should provide Adequate Water Supplies and/or onsite storage facilities for firefighting services. • Ground Water Recharge from sewage treatment systems should occur in the same general area from where water is withdrawn. Well and OWTS (page 50) • Ensure that development is at a scale/density consistent with Locally Available Water Resources. • New Development should conform to the minimum lot size requirements established by Jefferson County Public Health.

  4. Water Supply – Jefferson County Regulations Jefferson County Zoning Resolution – Section 34 – Mountain Groundwater Overlay District • Established in 2007 at the direction of the BCC which recognized the water resources issues in the fractured crystalline rock environment. • Rezoning, plat, SDP and building permit applications within the Mountain Groundwater Overlay District that rely on water supply wells must comply with the applicable requirements in Zoning Resolution Section 34 and the Land Development Regulation Section 21 – Water Supply. • Rezoning Applications • Estimated water requirements for proposed uses • Documentation the water source is legally available • Water Supply Summary form • Aquifer Test required if water requirement exceeds 0.28 acre feet per acre per year (~250 gallons per day per acre) • County staff completes a Water Availability Analysis (WAA) • Plat & SDP Applications • Estimated water requirements for proposed uses • Legal right to water supply • Water quality testing • Water Supply Summary form and Well Water Report Summary form • Aquifer Test required if water requirement exceeds 0.10 acre feet per acre per year (~90 gallons per day per acre) • County staff completes a Water Availability Analysis (WAA) • Building Permit Applications • A four hour well yield test • If well yield is less than 1 gpm, a minimum of 300 gallons of storage is required (well bore or cistern)

  5. Water Supply – Water Availability Analysis (WAA) Water Availability Analysis (WAA) Staff developed a Water Availability Analysis (WAA) worksheet that relies on an ArcGIS model that automatically collects the applicable data from multiple sources including Colorado Division of Water Resources, Colorado Geological Survey, National Weather Service and other sources within Jefferson County. The analysis takes into account land area of the project, proposed water requirements, precipitation, hydrogeologic values, number of lots, number of permitted wells, sub-basin area and other parameters. Coordinated with the Colorado Division of Water Resources, Colorado Geological Survey, USGS– Colorado Water Science Center, citizens, water resource consultants and developers in the development of the WAA. Creates a standardized approach to evaluating water supply for development applications. The WAA provides a consistent evaluation of the proposed water supply for applicants, citizens, staff, Planning Commission and Board of County Commissioners.

  6. Questions and Comments?

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