Installation Data
Number of urinals units
Total users per day males
Daily average number of uses per user ¹ uses
Water volume per flush gallons
Number of days used per week days
Water charges $ per 1,000 gal
Sewer charges $ per 1,000 gal
Maintenance labor rate $
Valve maintenance labor costs2 $0.00
Valve overhaul and/or replacement costs3 $0.00
Overflow/blockage/cleanup maintenance costs4 $0.00

Existing Water System WaterFree System
Water Use
Water use per day 0 gallons 0 gallons
Water use per year 0 gallons 0 gallons
Water & Sewer Cost
Total water & sewer costs $0.00 $0.00
Maintenance cost $0.00 $0.00
Total trap cost $0.00 $0.00
Total operational cost $0.00 Traps: $0.00


Annual savings with WaterFree System $0.00
Trap consumption
Trap life cycle: 7,000 uses
Annual trap consumption: 0
Total trap cost 0 units at: $35.00 Total: $0.00

Important: This Payback Analysis is based on the number of users, and gallons used per flush.
An infrared valve may consume more water on average.
This and other factors not mentioned may increase the water consumption rate.
1 Use an average 3 uses/day/adult male: United States Federal Energy Management Agency.
2 Assumes .5 hours per urinal per year for urinals with mechanical flush valves.
(Note - .75 hours per year per urinal for urinals with photo-electric/infrared automatic flush valves.)
Source: American Society of Plumbing Engineers.
3 Assumes a typical failure rate for flush valves is approximately 5% per year, and repair/replacement
parts average $35. Also assumes an estimated vandalism rate for flush valves at approximately
5% per year, and repair/replacement parts average $100 for mechanical valves.
Source: UCLA Maintenance Department.
4 Assumes average of 1 hour per year per flush urinal to cleanup overflows and/or remove line blockages.
Source: American Society of Plumbing Engineers.