Water planning guide

Whole-House Water Treatment Cost: What to Include

A purchase price is only part of the cost. Compare installation and recurring consumables over the years you expect to own the system.

Last reviewed September 12, 2026 · Sources & methodology

Upfront costs

  • Equipment
  • Plumbing and bypass
  • Electrical outlet or drain work where required
  • Professional installation if needed

Recurring costs

  • Replacement cartridges/media
  • Softener salt
  • Water used for regeneration/backwash
  • Electricity
  • Service and testing

Use the 10-year cost calculator

Next step

Run your numbers through the Water System Planner, then verify any product against its actual service-flow, pressure-drop, capacity and certification data.