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4. Environmental Impact Analysis 4.22 - Water Supply

Table 4.22-2 Summary of Projected Water Demands
Projected Water Demands 1,2,3,4,5
(Acre-Feet)
Annual
2020 2025 2030 2035 2040 2045 2050 Increase
Water Demands
LACWWD 36 2,300 2,700 3,100 3,500 3,900 4,300 4,700 2.5%
6
NCWD 10,100 10,700 11,200 11,800 12,600 13,400 14,200 1.2%
SCWD 28,400 29,100 29,900 30,800 32,400 33,900 36,000 0.8%
VWC 28,100 31,200 36,600 40,000 39,600 39,300 39,000 1.1%
7
Total Demand 68,900 74,600 80,800 86,100 88,500 90,800 93,900 1.1%
Sources: 2015 UWMP Table 2-2; Santa Clarita Water Division, Water Supply Assessment (July 2016)
1. Values rounded to the nearest hundred.
2. From MWM 2016.
3. Reflects existing and projected demands in CLWA service area only. CLWA’s Annexation Policy requires annexing parties to provide additional
fully reliable supplies.
4. Demands exclude non-purveyor demands. Similarly, supplies evaluated in this UWMP exclude non-purveyor supplies.
5. Demands include savings from plumbing code and standards and active conservation as assumed in the 2015 WUESP.
6. LACWWD 36 future demand was based on a growth projection factor and not on land use as was done for the three other purveyors.
LACWWD 36 is included for purposes of providing regional completeness; however, it is not required to prepare an UWMP.
7. Refer to GSI 2016 for detail on specific future developments included in the analysis.

Table 4.22-3 below presents the past, current, and projected water deliveries by customer type for
SCWD through 2050.
Table 4.22-3 SCWD Past, Current, and Projected Metered Water Deliveries

Projected Metered Water Deliveries
1,2

Water Use Single- Family Residential Multi-Family Residential Commercial Industrial Institutional Irrigation 3 Other Revenue Water 4 Total
Year Sectors Non-
2015 No. of accounts 23,132 4,713 708 19 111 994 387 --- 30,064
Deliveries (AF) 11,978 2,579 974 87 579 3,328 413 1,845 21,783
2020 No. of accounts 22,900 5,400 1,500 0 100 1,100 300 --- 31,300
Deliveries (AF) 12,500 3,600 1,600 400 400 7,800 0 2,100 28,400
2025 No. of accounts 24,000 5,900 1,700 0 100 1,200 400 --- 33,300
Deliveries (AF) 12,300 3,700 1,700 400 400 8,400 0 2,200 29,100
2030 No. of accounts 25,100 6,500 1,900 0 100 1,300 400 --- 35,300
Deliveries (AF) 12,100 3,900 1,900 500 400 8,800 0 2,300 29,900
2035 No. of accounts 26,200 7,000 2,200 0 200 1,500 400 --- 37,500
Deliveries (AF) 12,000 4,100 2,100 500 400 9,300 0 2,400 30,800
2040 No. of accounts 27,300 7,600 2,400 0 200 1,600 400 --- 39,500
Deliveries (AF) 12,100 4,300 2,300 500 500 10,000 0 2,700 32,400
2045 No. of accounts 28,400 8,200 2,600 100 200 1,700 400 --- 41,600
Deliveries (AF) 12,200 4,600 2,500 600 500 10,800 0 2,700 33,900
2050 No. of accounts 29,600 8,700 2,800 100 200 1,800 500 --- 43,700
Deliveries (AF) 12,900 4,900 2,700 600 500 11,500 0 2,900 36,000
Sources: 2015 UWMP Table 2-5; Santa Clarita Water Division, Water Supply Assessment (July 2016)
1. Values rounded to the nearest hundred.
2. 2015 values based on actual use. Projections for 2020 to 2050 from MWM 2016.
3. A portion of future irrigation demands are projected to be met with recycled water to the extent recycled water supplies are available. (See the
discussion in the 2015 UWMP Section 4 and Table 4-3).
4. NRW may include unbilled authorized consumption as well as water that is "lost" before it reaches the customer. Losses can be real losses
(through leaks, sometimes also referred to as physical losses) or apparent losses (for example through theft or metering inaccuracies).

Tebo Environmental Consulting, Inc. Sand Canyon Plaza Mixed-Use Project Draft EIR
March 2017 4.22-54