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Facts JANUARY 2013  
Sweetwater Authority Boundaries

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

Total Service Area (sq. miles)

32

National City

7.5

South Bay ID 

24.5

2012 Population estimates (SANDAG)

 

Service area

total 186,865

South Bay ID 

127,982

National City

58,883

   
Service Connections (Meters)

Total connections

32,712

Residential

29,490

Commercial

2,682

Government/Other

503 

Industrial

31 

Agricultural  

6

 
Pipelines

Total length

387 miles

6 inch diameter and smaller

149

8 to 10 inch

144

12 inch

56

14 to 16 inch

15

larger than 16 inch

23

Average pipe age

41.1 years

 
Public Fire Hydrants

Total as of January 2013

2,540

Bonita

444

Chula Vista

1,307

National City

789

 
Emergency Interconnections & pressure zones

Total emergency interconnections

12

Pressure zones

16

 
Production

2011-12 total system production 

20,464 af

Local reservoirs

10,253 af

NC wells

1,798 af

Imported water 

5,506 af

Groundwater Desalination

2,907 af

Historical use imported (20 yrs)

55%

Maximum daily consumption-98

25.6 mgd

Average daily consumption

18.2 mgd

 
Raw Water Storage

Total capacity

53,466 af

Aqueduct connection capacity 64 cfs
  
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

Total hydro stations 6

Hydro-pneumatic steel tanks

6

Tank capacity (gallons)

10,835,200

Total pump stations

17

Approximate total pumping capacity (gallons/minute)

36,000

Aqueduct connection capacity 62 cfs
 
Sweetwater River Watershed

Total watershed (sq. miles)

230 

Lower watershed

48

Middle watershed

84 

Upper watershed

98 

 
First Days

Kimball Brothers Water

May 26, 1869

Sweetwater Authority

Feb. 3, 1972

Sweetwater Authority Operations

Aug. 10, 1977

 
Wholesale Imported Water Cost

per acre foot, from San Diego County Water Authority - Jan. 2012

Raw water (Tier I & II)

$807 / $836

Treated water (Tier I & II)

$1,063 / $1,092

 
Budget

2013-2014 Operating and Capital

$56,053,500

 
Water Equivalents

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
af = acre feet
mgd = million gallons per day

Last updated: 7/11/2013 11:06:58 AM