Laundry Water Recycling Calculator

Water and sewer savings from rinse-water recycling.

Inputs

Daily water use (gal)

Recycle rate %

%

Water cost ($/gal)

Sewer cost ($/gal)

System cost ($)

Tab to move between fields

Results

Water saved (gal/yr)

750,000

Total savings ($/yr)$15,000.00

Payback (years)2.3

Daily recycled (gal)2,500

Water savings ($/yr)$6,000.00

How to Use This Calculator

Enter total daily water consumption in gallons for your laundry operation.
Set the percentage of water suitable for recycling (rinse water is typically recyclable).
Input water cost per gallon and system installation cost.
Review daily gallons recycled, annual water savings, and system payback period.
Consider local water rates and discharge surcharges when evaluating recycling ROI.

How the result changes with Daily water use (gal)

Daily water use (gal)	Water saved (gal/yr)
10,090	1,513,500
35,065	5,259,750
65,035	9,755,250
90,010	13,501,500

What each input means

Daily water use (gal): Current daily water consumption.
Recycle rate %: Percentage of rinse water recyclable.
Water cost ($/gal): Municipal water cost per gallon.
Sewer cost ($/gal): Sewer/discharge cost per gallon.
System cost ($): Water recycling system purchase and install cost.

What each result means

Water saved (gal/yr): Annual gallons of water saved.
Total savings ($/yr): Annual water plus sewer cost savings.
Payback (years): Years to recover system investment.
Daily recycled (gal): Gallons recycled per day.
Water savings ($/yr): Annual water cost savings only.

How this is calculated

Worked example, using the default values

Identify Input Parameters
4 parameters
Daily water use (gal) = 5000, Recycle rate % = 50, Water cost ($/gal) = 0.008, Sewer cost ($/gal) = 0.012 = 5 input(s) provided
Calculate Water saved
Water saved = round(dailySaved * 300)
750000 = 750000
Calculate Total savings
Total savings
15000 = $15,000
Calculate Payback
Payback
2.3 = 2.3

Engine last updated July 26, 2026. Checked against 3 independently-derived tests — how we verify calculators.

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