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MMWD
The Marin Municipal Water District
 220 Nellen Avenue
Corte Madera CA 94925
415-945-1455
MMWD is a public agency that provides high-quality drinking water to 195,000 people in a 147-square-mile area of south & central Marin County.
Our Mission
To manage our natural resources in a sustainable manner and to provide our customers with reliable, high-quality water at a reasonable price.
2010 Fact Sheet
(Click here for a printable version of our fact sheet.)
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SERVICE AREA
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Square miles: Ten towns and cities plus unincorporated areas of Marin
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147
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Population
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195,000
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WATER SUPPLY
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Watershed lands (acres)
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21,250
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Number of storage reservoirs
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7
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Total reservoir storage capacity
Acre-feet*/Millions of gallons
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79,566 / 29,927
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Average yearly rainfall (inches at Lake Lagunitas)
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52
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Average yearly runoff, less losses**
Acre-feet/Millions of gallons
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61,415 / 20,012
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Water imported from Russian River (avg. annual, acre-feet)
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7,300
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Operational yield (acre-feet)***
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28,400
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WATER USE
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Service connections
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60,940
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Residential/Other
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55,525 / 5,715
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Maximum annual use (1987)
Acre-feet/Millions of gallons
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33,100 / 10,785
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Average annual use over 10 years (1997-2006)
Acre-feet/Millions of gallons
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29,750 / 9,694
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FINANCE
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Budget 2007-08 fiscal year revenues (not including fire flow fund)
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$ 64,286,012
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Budget 2007-08 fiscal year disbursements (not including fire flow fund)
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Operations (not including depreciation & amortization) $64,820,681
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Debt service $ 5,947,735
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Capital purchases and projects $22,461,981
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Total budgeted 2009-10 fiscal year disbursements
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$ 93,230,397
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Utility plant – net book value
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$278,586,276
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FACILITIES
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Miles of pipeline
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941
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Number of storage tanks
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139
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Total tank storage capacity (millions of gallons)
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83
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Number of pump stations
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95
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Number of potable water treatment plants
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3
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Maximum daily treatment plant capacity (millions of gallons)
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59
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Average daily treatment plant production (millions of gallons)
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25
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RECYCLED WATER FACILITIES
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Miles of pipeline
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25
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Number of storage tanks
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5
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Total tank storage capacity (millions of gallons)
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1.7
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Number of pump stations
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4
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Number of recycled water treatment plants
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1
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Maximum daily treatment plant capacity (millions of gallons)
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2
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*One acre-foot is equivalent to 325,851 gallons, enough water to cover one acre (about the size of a football field) to a depth of one foot, or to supply three families for one year.
**Due to evaporation
*** Amount of water that can be supplied in all but the driest years
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Rev. 1/2010
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