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Return on Investment Calculator

Please fill in the mandatory fields marked in (*). Only for apartments having between 10 to 700 units.
The program automatically calculates all other parameters.



Considering Per capita consumption of water per day per person: 160 litres

Approximate Greywater generation will be: 65%



Residents & Residential Units
Average residents per residential unit *
Number of residential units/flats in the building *
(Units must be between 10 to 700)

Usage of Grey Water (Anyone of the following must be chosen) *

Recharge the ground
Reuse for gardening and flushing
Reuse for all potable purposes other
than drinking and cooking

Water from corporation / municipal sources (In Litres Per Day) *

Details of rain water harvesting pits
Depth in meters
Diameter in meters
Water Purchased
Is all grey water collected from each block to a common point *
Cost of purchased water in tanker per 12 kl Rs *
Quantity of water purchased per day in
number of tankers *
Contact Details
Name *
Phone *
Email *
Location
Results
Number of residents in the building {{ residentsInBuilding }}
Total water consumed per day {{ totalWaterConsumedPerDay }} litres/day
Grey water generated per day {{ grayWaterGeneratedPerDay }} litres/day
Water from bore and open wells {{ waterFromBoreAndOpenWells.toLocaleString('en-IN') }} lts/day
Capital cost per flat or per kl of water
(If the no. of flats exceed 60 units, the cost calculation will be per KL of greywater, if the no. of flats is less than 60, then cost will be calculated per flat basis)
₹ {{ costPerFlat.toLocaleString('en-IN') }}
Total investment cost for the apartment ₹ {{ totalInvestmentCostForTheApartment.toLocaleString('en-IN') }}
Savings per day ₹ {{ Math.round(savingsPerDay).toLocaleString('en-IN') }}
Savings per month ₹ {{ Math.round(savingsPerMonth).toLocaleString('en-IN') }}
Interest and depreciation cost per month (18%) ₹ {{ Math.round(interestAndDepriciationCostPerMonth).toLocaleString('en-IN') }}
Net savings per month ₹ {{ Number(Math.round(netSavingsPerMonth)).toLocaleString('en-IN') }}
Return on investment period {{ Math.round(roi) }} months