14 ATTACHMENT 1 EXHIBIT A - Laserfiche WebLink

Executive Summary THE CITY OF PL£ASANTON • Water Shortage Contingency Plan (WSCP): Update the City's plan to include an annual process for assessing potential gaps between planned water supply and demands; conform with the State's standard water shortage levels (including a shortage level greater than 50 percent) for consistent messaging and reporting; and provide water shortage responses that are locally appropriate (see Chapter 8). • Lay Description: Provide a lay description of the findings of the UWMP; this Executive Summary serves as the "Lay Description" for this 2020 UWMP. Major components and findings of the City's 2020 UWMP are summarized below. CITY WATER SYSTEM The City's water facilities produce, treat, store, and deliver drinking (i.e., potable) water to its customers, which include City residents and commercial customers, as well as approximately 250 customers in unincorporated Alameda County. The City produces water by pumping it from City -owned wells (groundwater) and purchasing treated water from Zone 7. Groundwater is treated before it enters the distribution system. The City also owns and operates an extensive network of pipelines and pumping facilities to deliver drinking water to its customers. Besides drinking water, the City delivers recycled water to a portion of customers within its service area, mainly for landscape irrigation. Recycled water is highly treated wastewater that can be used for non -potable purposes like landscape irrigation, toilet flushing, and cooling. The City owns and operates a separate storage and pipeline system for recycled water. WATER USE BY CITY CUSTOMERS The City anticipates growth in the next 20 years, which would increase its demand for water. Thorough and accurate accounting of current and future water demands is critical for the City's planning efforts. To continue delivering safe and reliable drinking water, the City must know how much water its customers currently use and how much they expect to use in the future. The City coordinated closely with Zone 7 to estimate water demands through the year 2045. This process involved reviewing the City's development and planning documents. The City's potable and recycled water demand is expected to increase approximately 23 and 47 percent (from 2020 levels), respectively, by 2045. Most of that growth is expected in the next ten years. CITY WATER SUPPLIES The City's water supplies consist of purchases from Zone 7 (approximately 80 percent of supply in 2020) and groundwater pumped by the City (approximately 20 percent of supply in 2020). Of Zone 7's supplies, imported water from the State Water Project makes up approximately 80 percent, with the remainder coming from groundwater and local surface water. WEST YOST ES -2 City of Pleasanton 2020 Urban Water Management Plan May 2021