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BACKGROUND The original establishment of a seasonal differentiation between the number of allowed watering days between cooler months and warm/hot months within PMC 9.30 was adopted by City Council on March 18, 2014, in advance of the mandatory water use restrictions implemented during the last significant drought. The referenced resources used to make those proposed code amendments in 2014 were from the City's 2010 Urban Water Management Plan (UWMP); the Tri-Valley Water Retailers' Water Shortage Contingency Plan (a 2009 cooperative effort between the City, City of Livermore, DSRSD, and California Water Service), and best management practices from other agencies such as East Bay Municipal Utility District (EBMUD). Though the 2010 UWMP and the Tri-Valley Water Retailers' Water Shortage Contingency Plan served as the foundation of the PMC 9.30 amendments, by 2014 more recent best management practices, such as legislative directives under the State's Model Water Efficient Landscape Ordinance, were important new factors taken into consideration in proposing watering day limitations relevant to season changes that influence plant watering needs over times of water shortage. Currently, each Tri-Valley Water Retailer (Retailers) individually updates and adopts their own WSCP per the California UWMP Act. The WSCP outlines in detail a water supplier's response to a water shortage, and PMC 9.30 codifies the implementation of the City's WSCP. During the preparation phase of the 2020 UWMP update the Retailers held a meeting to review and discuss each Retailers' direction in WSCP updates. City staff shared the current water conservation measures with the other retailers with the goal of aligning water conservation measures within the Tri-Valley area. Following the 2021 adoptions of each Retailer's updated WSCP and respective water shortage response code section amendments; differences existed between the implementation of each Retailer's requirements on watering day restrictions. Per City Council's October 5, 2021 , request for further collaboration with the Retailers on potentially matching watering day restriction approaches, staff has engaged both City of Livermore and DSRSD on the possibility of further collaboration. The City of Livermore Stage 2 water day limitation remains at a maximum of three times per week, with no seasonal differentiation. DSRSD had made no further changes to their updated watering day limitations; however, on September 21, 2021, DSRSD's Board approved by resolution a Stage 2 Water Shortage declaration with the watering day restriction limit of no more than three, non-consecutive days per week March through October, and one day per week November through February. Additionally, consideration was made to ensure that water conservation measures would not hinder the delivery of life and safety services at medical patient-care facilities. As these facilities likely could not reduce their indoor water usage below a minimum threshold, staff recommends a separate standard that would set a 15 percent reduction when a Stage 2 mandatory reduction of 20 percent (or higher) is required. If excess use penalties are enacted for exceeding the mandated water use allotment, all water customers are eligible to apply for an adjustment through the process outlined in Section 9.30.120. Page 2 of 4