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Plant Engineering Calculator

Cooling Tower Water Cost Calculator — Makeup, Blowdown & Annual Spend

Annualize cooling-tower makeup and blowdown volumes and combine water, sewer and treatment rates into an operating-cost baseline.

Inputs

Results

Annual makeup 15000 m³
Annual blowdown 4000 m³
Water cost $15000
Total annual cost $20000

Formula

annual makeup=makeup rate×hours; cost=volume×unit rates.

Worked example

A tower using 3 m³/h makeup for 5,000 h consumes 15,000 m³/year before pricing water and treatment.

Assumptions & limits

  • Enter measured or separately calculated water rates.
  • Tariffs may include tiered, sewer or demand charges not represented by a flat unit rate.

FAQs

What does this Cooling Tower Water Cost Calculator calculate?

Annualize cooling-tower makeup and blowdown volumes and combine water, sewer and treatment rates into an operating-cost baseline.

Is this suitable for final design?

Use it for transparent engineering screening and diagnostics. Verify final design or operating changes against measured site data, OEM curves and applicable standards.

Why are assumptions shown?

Plant calculations depend on operating boundaries. Explicit assumptions make scenarios auditable and prevent false precision.

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cooling tower water balancecooling tower blowdown savingscooling tower cycles

Last updated: 17 September 2026