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Water Conservation Audit- Cocoon House <br /> l <br /> Faucet Aerators <br /> The faucets in the restrooms have flows of approximately 2 - 2.5 gallons per minute <br /> (gpm). By retrofitting these faucets with low-flow aerators,it will reduce the flows to 1.0 <br /> gallon per minute (gpm). Currently, there is one faucet in the second floor restroom at <br /> the Cedar Street site that already uses a low flow aerator and does not need to be <br /> replaced. It is recommended that three faucets at the Cedar Street site and 14 faucets <br /> at the Pine Street site be replaced with new low flow aerators. The estimated cost and <br /> savings of this measure are shown below. Note the savings reflect reductions in water, <br /> wastewater and energy (for water heating). <br /> Estimated measure cost (17 x $10)*: $170 <br /> Estimated water usage savings per year(ccf): 16 <br /> Estimated water savings per year: $23 <br /> Estimated wastewater savings per year: $50 <br /> Estimated energy savings (year): $33 <br /> Simple payback period (years): 1.6 <br /> * including installation cost <br /> Pressure-compensating aerators are recommended in order to maintain a consistent <br /> faucet flow rate. Please be aware that not all aerators are the same size. Make sure the <br /> new aerators are the same diameter and thread as the existing models. If you cannot a <br /> find a 1 gpm aerator from a local provider, a supplier can be located on the intemet by <br /> conducting a search for"low flow aerator". <br /> Showerheads <br /> The showerheads in the restrooms have flows of approximately 2.5 -4 gallons per <br /> minute (gpm). By retrofitting these showerheads with low-flow showerheads, it will <br /> reduce the flows to 2.0 gallons per minute (gpm). It is recommended that 13 <br /> showerheads at the Pine Street site and 2 showerheads at the Cedar Street site be <br /> replaced with 2 gallon per minute models. The estimated cost and savings of this <br /> measure are shown below. Note the savings reflect reductions in water, wastewater and <br /> energy (for water heating). Significant additional savings may be gained by reducing <br /> time in the shower. With a 2 gpm showerhead, a five minute reduction in shower time <br /> would save 10 gallons of water per shower. <br /> Estimated measure cost (15 x $30)*: $450 <br /> Estimated water usage savings per year (ccf): 323 <br /> Estimated water savings per year: $458 <br /> Estimated wastewater savings per year: $1,010 <br /> Estimated energy savings (year): $743 <br /> Simple payback period (years): .2 <br /> * including installation cost <br /> 10/11/2004 Page 4 <br /> 64 <br />