Industrial Laundry, Uniform & Textile Rental Operations worked example

Water Use Per Pound at 110% washroom water allocation: a worked example

Push washroom water allocation up to 110% and the picture changes. This example computes every intermediate figure at that operating point. Useful for plant managers, washroom leads, and sustainability teams reviewing tunnel washer settings, rinse reuse, and sewer cost by product mix.

The inputs for this scenario

  • Washroom water used: 92,000 gal (unchanged)
  • Processed laundry weight: 46,000 lb (unchanged)
  • Washroom water allocation: 110 % (raised for this scenario; the documented default is 100)

Working through the calculation

  • Applying the documented formula (Base water use per pound = washroom water used รท processed laundry weight) to the inputs above produces each figure below.
  • At this operating point the engine returns 2.2 gal / lb for allocated water use per pound, the number this scenario is built around.
  • At this operating point the engine returns 2 gal / lb for base water use per pound.
  • At this operating point the engine returns 110 % for washroom water allocation.
  • At this operating point the engine returns 46,000 lb for processed laundry weight.

How this compares with the baseline

  • Against the tool's baseline example, where washroom water allocation sits at 100% and the headline result is 2 gal / lb, this scenario comes in 10% above the baseline at 2.2 gal / lb.
  • It computes gallons of water consumed per pound of laundry processed, optionally narrowed to the washroom's allocated share of a shared meter. The value of this scenario is the size of the gap it exposes: that gap, priced out over a year, is the budget you can justify spending to close it.

Results at a glance

  • Allocated water use per pound: 2.2 gal / lb (headline result)
  • Base water use per pound: 2 gal / lb
  • Washroom water allocation: 110 %
  • Processed laundry weight: 46,000 lb

Run it with your numbers

  • Every input above is editable in the live Water Use Per Pound calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.