facts 2007 |
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Sweetwater Authority Boundaries |
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|
Gross land area (sq. miles) |
41 |
|
|
Loveland reservoir |
5.1 |
|
|
Service area |
32 |
|
|
San Diego Bay |
3.7 |
|
|
City of San Diego |
0.2 |
|
Service Area |
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|
Total Service Area (sq. miles) |
32 |
|
|
National City |
7.5 |
|
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South Bay ID |
24.5 |
|
|
2007 Population estimates (SANDAG) |
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|
Service area |
total 183,327 |
|
|
South Bay ID |
125,115 |
|
|
National City |
58,212 |
|
Service Connections |
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|
(as of June 2007) |
total 32,592 |
|
|
Residential |
29,369 |
|
|
Commercial |
2,669 |
|
|
Government/Other |
509 |
|
|
Industrial |
37 |
|
|
Agricultural |
8 |
|
Pipelines |
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|
Total length |
391 miles |
|
|
6 inch diameter and smaller |
157 |
|
|
8 to 10 inch |
142 |
|
|
12 inch |
54 |
|
|
14 to 16 inch |
13 |
|
|
larger than 16 inch |
25 |
|
|
Average pipe age |
36.19 years |
|
Public Fire Hydrants |
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|
Total as of June 2007 |
2,492 |
|
|
Bonita |
445 |
|
|
Chula Vista |
1,274 |
|
|
National City |
773 |
|
Emergency Interconnections & pressure zones |
||
|
Total emergency interconnections |
11 |
|
|
Pressure zones |
16 |
|
Production |
||
|
2005-06 total system production |
24,349 af |
|
|
Local reservoirs |
11,524 af |
|
|
NC wells |
1,670 af |
|
|
Imported water |
8,884 af |
|
|
Groundwater Desalination |
2,271 af |
|
|
Historical use imported (20 yrs) |
47.4% |
|
|
Maximum daily consumption-98 |
30.1 mgd |
|
|
Average daily consumption |
21.9 mgd |
|
Raw Water Storage |
||
|
Total capacity |
53,466 af |
|
Treated Water |
||
|
Total storage reservoirs |
25 |
|
|
Total capacity (gallons) |
42,835,200 |
|
|
Concrete reservoirs |
3 |
|
|
Concrete reservoir capacity (gallons) |
32,000,000 |
|
|
Steel tanks |
16 |
|
|
Hydro-pneumatic steel tanks |
6 |
|
|
Tank capacity (gallons) |
10,835,200 |
|
|
Total pump stations |
17 |
|
|
Approximate total pumping capacity (gallons/minute) |
36,000 |
|
Sweetwater River Watershed |
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|
Total watershed (sq. miles) |
182 |
|
|
Lower watershed |
38 |
|
|
Middle watershed |
42 |
|
|
Upper watershed |
102 |
|
First Days |
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|
Kimball Brothers Water |
May 26, 1869 |
|
|
Sweetwater Authority |
Feb. 3, 1972 |
|
|
SWA Operations |
Aug. 10, 1977 |
|
Wholesale Imported Water Cost
|
||
|
Raw water (Tier I & II) |
$425 / $487 |
|
|
Treated water (Tier I & II) |
$572 / $634 |
|
Budget |
||
|
2007-2008 Operating and capital |
$43,711,500 |
|
Water Equivalents |
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|
1 cubic foot |
7.48 gal. |
|
|
1 acre-foot |
325,850 gal. |
|
|
1 million gallons |
3.07 af |
|
|
1 million gallons/day |
1,120 af/year |
|
Key to Abbreviations |
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|
af = acre feet |
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|
mgd = million gallons per day |
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