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20 <br />2021 Amended and Restated WSA 17162043.1 <br />generation of electric power. The SFPUC, as the Regional Water System operator, is solely <br />responsible for making day-to-day operational decisions. <br />3.11. Shortages <br />A.Localized Water Reductions. Notwithstanding San Francisco's obligations to <br />deliver the Supply Assurance to the Wholesale Customers collectively and the Individual Supply <br />Guarantees to Wholesale Customers individually, San Francisco may reduce the amount of <br />water available or interrupt water deliveries to specific geographical areas within the Regional <br />Water System service area to the extent that such reductions are necessary due to <br />Emergencies, or in order to install, repair, rehabilitate, replace, investigate or inspect equipment <br />in, or perform other maintenance work on, the Regional Water System. Such reductions or <br />interruptions may be imposed by San Francisco without corresponding reductions or <br />interruptions in the amount of water available to SFPUC water users outside the specific <br />geographical area where reductions or interruptions are necessary, if the system's ability to <br />supply water outside the specific geographical area has not been impaired. In the event of such <br />a reduction or interruption, San Francisco will restore the supply of water to the specific <br />geographical area as soon as is possible. Except in cases of Emergencies (during which oral <br />notice shall be sufficient), San Francisco will give the affected Wholesale Customer(s) <br />reasonable written notice of such localized reductions or interruptions, the reasons therefor, and <br />the probable duration thereof. <br />B.System-Wide Shortages and SFPUC Response to Regional Emergencies. <br />Following a major system emergency event, the SFPUC will work closely with its Wholesale <br />Customers to monitor customer demand, including the demand source. In the event that any <br />individual Wholesale Service Area or Retail Service Area customer’s uncontrolled distribution <br />system leaks could result in major water waste and endanger the supply provided by the <br />Regional Water System as a whole, flow through some customer connections may need to be <br />temporarily reduced or terminated. SFPUC will work closely with customers to assess the <br />nature of the demand (e.g. fire-fighting versus leakage), so that public health and safety <br />protection can be given top priority. <br />1.All emergencies that require use of non-potable source water will require <br />use of chlorine, or other suitable disinfectant, if feasible.