Ownership cost calculator

Ten-Year Water Treatment Cost Calculator

Calculate ten-year water-treatment ownership cost from installation, financing, filters, media, salt, service, utilities and planned replacements.

Start with a quote and maintenance schedule

This calculator supplies the arithmetic, not the prices or service life. Use current written quotes, exact part costs, and manufacturer or provider schedules whenever possible.

Set up cost categories for:

1 Enter the installed cost

Equipment System, tanks, housings, controls and included parts

Installation Plumbing, labor, startup and included site work

Other upfront costs Testing, permits, electrical work, disposal or exclusions

2 Add recurring ownership costs

Use one row per cartridge, media, salt/regenerant, lamp, membrane, test, or other repeating item. “First due” lets an existing quote include an initial cartridge without charging for another one in month one.

Item nameCost each time

Replacement interval in months

months

First due in months

months

Item nameCost each time

Replacement interval in months

months

First due in months

months

Item nameCost each time

Replacement interval in months

months

First due in months

months

Costs paid every year

Routine service Annual technician visits or testing

Electricity Estimated annual treatment electricity

Water and sewer Estimated annual treatment-related use

Other annual cost Monitoring, delivery, reserve or another assumption

3 Schedule major work during years 1–10

Add resin, tank media, membrane, control-valve, pump, UV equipment, or another expected replacement only when the quote or planning assumption supports it.

Planned workCost today

Year due

Planned workCost today

Year due

Financing and future-price assumptions Optional

Amount financed Must not exceed the installed-cost total

Annual percentage rate Enter the disclosed APR

% APR

Loan term Payments beyond month 120 remain as a balance

months

Annual future-price change Applies to recurring and planned costs; 0% uses today’s entered prices

% / year

Estimated cash paid in years 1–10

—Nominal dollars using the entered schedule and future-price assumption. Any remaining loan balance is shown separately.

Installed cost—

Average per month—

Loan payment—

Interest paid in 10 years—

Balance after year 10—

Year	Initial cash	Loan payments	Recurring items	Annual costs	Planned work	Year total	Cumulative

Planning boundary: this is an arithmetic model, not a price quote or prediction of equipment life. It excludes unentered repairs, water-rate tiers, tax effects, opportunity cost, warranties, rebates, and benefits. Compare identical treatment goals and documented performance—not only totals.

What belongs in a ten-year comparison

Compare systems that address the same documented treatment goal. Enter the installed equipment and labor scope, recurring cartridges or media, salt or regenerant, routine service, treatment-related utilities, financing terms and any major work supported by the quote or maintenance plan.

Formula and pricing boundaries

The calculator schedules the entered costs across 120 months. Recurring items are charged only at the interval and first-due month you provide. Financing uses the entered amount, APR and term; payments made during the first 120 months are included, while any remaining balance is reported separately. Optional future-price change applies only to recurring and planned costs.

The tool supplies arithmetic, not prices or service life. Use current written quotes, exact replacement-part prices and documented schedules. It does not invent local installation costs, tax, rebates, repair events or warranty outcomes.

Compare equal scope

Before choosing the lower total, verify that both options use the same water evidence, treatment objective, rated flow, pressure-drop basis, capacity, certified claim, installation boundary and post-installation verification plan.

Continue with the system comparison hub or the water-softener cost guide.

Decision boundary

A calculated result is a shortlist input, not an installation design.

Verify the water evidence, exact product documentation, pressure and plumbing conditions, and current ownership terms before selection.

Use the selection guide

Publisher boundary: Water System Guide is an independent research publisher, not a manufacturer, dealer, installer, utility or laboratory.

Costs paid every year

What belongs in a ten-year comparison

Formula and pricing boundaries

Compare equal scope

A calculated result is a shortlist input, not an installation design.

Optional analytics