Filtration system cost varies enormously depending on what you're actually treating for. Here's what you should expect to pay at each level, so you can budget accurately instead of guessing.
| System Type | Unit Cost | Install Labor |
|---|---|---|
| Basic sediment/carbon filter | $150–$400 | $100–$250 |
| Iron/manganese oxidizing filter | $400–$1,000 | $150–$350 |
| Water softener (ion exchange) | $400–$700 | $150–$300 |
| Iron + sulfur combo filter | $800–$1,800 | $200–$400 |
| Full bundle (filter + softener + RO) | $1,300–$2,700 | $250–$500 |
A system rated for light iron (1-3 mg/L) costs meaningfully less than one built for severe iron (10+ mg/L), which needs chemical oxidation rather than simple air injection. Buying based on your actual test numbers — not a guess — avoids paying for capacity you don't need, or under-buying and having the system fail.
Softeners and filters are rated by grain capacity and flow rate. A 32,000-grain softener suits a smaller household; larger homes with 3+ bathrooms typically need 48,000+ grains to avoid running out of capacity between regeneration cycles.
If your well has iron, hardness, and bad-tasting water all at once, a combo system that handles all three at once is almost always cheaper than buying three separate units.
Get tested before budgeting. The single biggest cost mistake well owners make is buying a system before testing, then having to buy a second, correctly-sized system after the first one fails to fix the problem.
The purchase price isn't the full picture. Replacement filter cartridges run $30-$80 every 6-12 months. Softeners need salt refills, typically $10-$20 per month. Factor this into your decision — a cheaper unit with expensive, frequent filter changes can cost more over 5 years than a pricier set-and-forget system.
Basic sediment and carbon systems run $150-$400 for the unit, plus $150-$400 for professional installation. Iron/manganese oxidizing filters and combo softener-filter-RO bundles run $800-$2,700 for the unit before installation labor.
Most whole-house systems can be self-installed by a reasonably handy homeowner, saving $150-$400 in labor. However, systems with electrical components (UV, digital metered valves) or that require cutting into existing plumbing are often worth hiring a plumber for.
Yes. Replacement filter cartridges typically cost $30-$80 every 6-12 months depending on system type and water quality. Softeners require ongoing salt purchases, roughly $10-$20 per month for an average household.
Use our free decoder to understand your well water test results before you budget for a system.
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