RO Tools

Cost of Operations

The Cost of Operations calculator is a tool to help project the costs associated with running an RO system. We have defaulted in some common values, but please change any of the values shown to give a more accurate calculation of operating costs for your proposed RO system in your area of the world.

Unit of Measure:
RO Specifications
RequiredProduct Water Flow: gpm
RequiredRO Recovery: %
RO Feed Flow:   gpm
RO Concentrate: gpm
RO Model:
RequiredHours/Day of Operation: hours
RequiredDays/Year of Operation: days
RequiredCost of Electricity: $ /kWh
RequiredPower: VAC
RequiredPower Frequency: Hz
RequiredRO Pump Efficiency: %
RequiredRO Pump Pressure: psig
RequiredMotor Efficiency:
Chlorine: $ per pound
Ferric Sulfate: $ per pound
Sulfuric Acid: $ per pound of 100%
Citric Acid: $ per pound of 100%
Hydrochloric Acid: $ per poundpound of 100%
Sodium Bisulfite: $ per pound
Antiscalant: $ per pound
Sodium Hydroxide: $ per pound
Pretreatment   Dosage Rate
Chlorine:   ppm
Ferric Sulfate:   ppm
RO Inlet      
Sulfuric Acid:   ppm
Citric Acid:   ppm
Hydrochloric Acid:   ppm
Sodium Bisulfite:   ppm
Antiscalant:   ppm
Product Water      
Sodium Hydroxide:   ppm
Chlorine:   ppm
RO Membrane
RequiredRO Membrane Replacement: years
Required# of RO Membranes:  
RequiredPrice Per RO Membrane: $
per membrane element (Typical prices are $450 for 8" and $175 for 4" membrane elements)
Cartridge Replacement
RequiredCartridge Filters Replaced:   days
RequiredFilter Cost: $ per ten inches equivalent (TIE)
RequiredCleaning Frequency:   days
RequiredCleaner Cost: $ per pound of cleaner chemical
RequiredChemical Types Used:  
RequiredSize of Cleaning Tank:   gallons
Maintenance Costs
RequiredCost of Water: $ per 1000 gallons of feed water
RequiredCost of Sewer: $ per 1000 gallons of discharged water
RequiredLabor   minutes per day
RequiredCost of Labor: $ per hour