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Healthy Growth Calculator
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Stop Sprawl
Healthy Growth Calculator

Water Use
Sprawl vs Your Choice
Sprawl -- 3 Households per residential acre   Your Choice: 10 households per acre, row housing. Click to choose another density. choose density or place
1,032   422
Gallons per household each day

Water Used. Water provision requires damming, transporting and loss of stream flow to fish and farms. In sprawl, most water is used on lawns and in washing cars, and it washes fertilizers, herbicides and pesticides off the lawns into streams, lakes and bays. Water consumption depends on the climate and other factors, but the calculator shows relative rates between compact and sprawl neighborhoods.

Source for Calculation
Indoor. Kimberly Knox, SF Water Dept Water Cons (personal commun.): 55 g/p-d for multi-family units (~50 du/res ac). Assumes 80% is indoor use (44 g/p-d), and 3.8 persons per household.
Outdoor. Sakrison, "Water Use in Compact Communities: The Effect of New Urbanism, Growth Management and Conservation Measures on Residential Water Demands," Washington Dept of Ecology, 1998, Table 11 for 4, 7 and 12 du/ac, and extrapolated to higher and lower densities.


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