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Santa Ana 2020 Urban Water Management Plan <br />arcadis.com <br />8-4 <br />Table 8-1: Water Shortage Contingency Plan Levels <br />Submittal Table 8-1 Water Shortage Contingency Plan Levels <br />Shortage <br />Level <br />Percent <br />Shortage Range Shortage Response Actions <br />0 0% (Normal) <br />A Level 0 Water Supply Shortage – Condition exists when the City notifies its water <br />users that no supply reductions are anticipated in this year. The City proceeds with <br />planned water efficiency best practices to support consumer demand reduction in line <br />with state mandated requirements and local City goals for water supply <br />reliability. Permanent water waste prohibitions are in place as stipulated in the City’s <br />Water Shortage Response Ordinance. <br />1 Up to 10%  <br />A Level 1 Water Supply Shortage – Condition exists when the City notifies its water <br />users that due to drought or other supply reductions, a consumer demand reduction <br />of up to 10% is necessary to make more efficient use of water and respond to existing <br />water conditions. Upon the declaration of a Water Aware condition, the City <br />shall implement the mandatory Level 1 conservation measures identified in this <br />ordinance. The type of event that may prompt the City to declare a Level 1 Water <br />Supply Shortage may include, among other factors, a finding that its wholesale water <br />provider calls for extraordinary water conservation. <br />2  11% to 20% <br />A Level 2 Water Supply Shortage – Condition exists when the City notifies its water <br />users that due to drought or other supply reductions, a consumer demand reduction <br />of up to 20% is necessary to make more efficient use of water and respond to existing <br />water conditions. Upon declaration of a Level 2 Water Supply Shortage condition, <br />the City shall implement the mandatory Level 2 conservation measures identified in <br />this ordinance. <br />3 21% to 30%  <br />A Level 3 Water Supply Shortage – Condition exists when the City declares a water <br />shortage emergency condition pursuant to California Water Code section 350 and <br />notifies its residents and businesses that up to 30% consumer demand reduction is <br />required to ensure sufficient supplies for human consumption, sanitation and fire <br />protection. The City must declare a Water Supply Shortage Emergency in the manner <br />and on the grounds provided in California Water Code section 350. <br />4  31% to 40% <br />A Level 4 Water Supply Shortage – Condition exists when the City declares a water <br />shortage emergency condition pursuant to California Water Code section 350 and <br />notifies its residents and businesses that up to 40% consumer demand reduction is <br />required to ensure sufficient supplies for human consumption, sanitation and fire <br />protection. The City must declare a Water Supply Shortage Emergency in the manner <br />and on the grounds provided in California Water Code section 350.