8.3 : Commercial Sector Water Consumption
| 8.3.6 |
Normalized
Annual End Uses of Water in Two California High Schools |
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Range of Water Use |
Range of Water Use |
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| Fixture/End
Use |
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(gal/room) |
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(gal/person) |
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| Toilet |
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2.9 - 3.2 |
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206 - 271 |
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| Urinal |
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1.2 - 2.6 |
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106 - 186 |
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| Faucet |
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1.0 - 2.3 |
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87 - 165 |
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| Shower |
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0.5 - 0.7 |
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44 - 47 |
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| Kitchen |
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0.7 - 1.0 |
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58 - 58 |
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| Misc. uses (2) |
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0.9 |
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68 |
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| Cooling |
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- |
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- |
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| Leaks |
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1.6 - 3.6 |
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112 |
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| Swimming Pool |
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0.4 - 0.9 |
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31 |
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| Total Use |
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11.1 - 12.3 |
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883 |
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Average |
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Logged average |
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Indoor peak instantaneous |
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Building Size (SF) |
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daily use (thousand gal) |
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demand (gpm) |
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222326 |
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9.1 - 16.4 |
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41 - 60 |
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| Benchmarking
Values for Schools (3) |
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N |
25th Percentile of Users |
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| Indoor Use,
Gal./sq. ft./year |
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142 |
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8 - 16 |
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| Indoor Use,
Gal./school day/student |
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141 |
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3 - 15 |
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| Cooling Use,
Gal./sq. ft./year |
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35 |
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8 - 20 |
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| Note(s): |
1)
Water use data for the buildings was collected over a few days. Estimates of
annual use were created by accounting for seasonal use and other variables,
billing data, and interviews with building managers. 2) One high school. 3)
The study derived efficiency benchmarks by analyzing measured data and audit
data. The benchmark was set at the lower 25th percentile of users. |
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