Plumbing
Water Treatment: costs by job
Install, replace, repair and maintain costs for every water treatment job we track, with the trade required and how DIY-friendly each one is.
Model reviewed August 2026
Cost comparison
Typical national figures for a standard single-family home.
| Water Softener InstallationTypical $2,100 · Water treatment specialist · DIY 2/5 | $900 – $4,800 |
|---|---|
| Water Softener ReplacementTypical $2,100 · Water treatment specialist · DIY 2/5 | $900 – $4,800 |
| Water Softener RepairTypical $462 · Water treatment specialist · DIY 2/5 | $198 – $1,056 |
| Water Softener MaintenanceWater treatment specialist · DIY 2/5 | Cost under revalidation |
| Whole House Water Filter InstallationTypical $1,500 · Water treatment specialist · DIY 3/5 | $600 – $3,800 |
| Whole House Water Filter ReplacementTypical $1,500 · Water treatment specialist · DIY 3/5 | $600 – $3,800 |
| Whole House Water Filter MaintenanceWater treatment specialist · DIY 3/5 | Cost under revalidation |
| Reverse Osmosis System InstallationTypical $750 · Plumber · DIY 3/5 | $300 – $1,800 |
| Reverse Osmosis System ReplacementTypical $750 · Plumber · DIY 3/5 | $300 – $1,800 |
| Reverse Osmosis System MaintenancePlumber · DIY 3/5 | Cost under revalidation |
| Well Pump ReplacementTypical $2,600 · Well contractor · DIY 1/5 | $1,200 – $6,500 |
| Well Pump RepairTypical $572 · Well contractor · DIY 1/5 | $264 – $1,430 |
| Well Pump MaintenanceTypical $312 · Well contractor · DIY 1/5 | $144 – $780 |
Water Softener
Water Softener InstallationTypical $2,100 · Water treatment specialistWater Softener ReplacementTypical $2,100 · Water treatment specialistWater Softener RepairTypical $462 · Water treatment specialistWater Softener MaintenanceCost under revalidation · Water treatment specialist
Variants: Salt-based · Salt-free · Dual tank