2026 price ranges
What a Water Softener Costs in Peoria, Illinois
No quote is possible without a test at your tap, but published cost guides give a fair starting range. Here they are, with notes on what Peoria's hardness does to them.
A water softener in Peoria, IL typically costs $1,100–$3,000 installed (Fixr), and a twin-tank unit $1,000–$5,000 (This Old House). Whole-home filtration runs $1,129–$3,541 and softener repair $162–$985 (HomeAdvisor). These are national cost-guide ranges, not quotes.
Typical ranges from published cost guides
| System | Typical range | Source | Fit for Peoria water |
|---|---|---|---|
| Water softener, installed | $1,100–$3,000 | Fixr | Standard ion exchange for a typical house |
| Twin-tank (dual) softener | $1,000–$5,000 | This Old House | Soft water around the clock at 19–37 gpg |
| Whole-home filtration | $1,129–$3,541 | HomeAdvisor | Chloramine taste and odor at every tap |
| Under-sink reverse osmosis | $150–$1,300 | This Old House | Drinking and cooking water, lower sodium |
| Whole-home reverse osmosis | $1,000–$4,800 | This Old House | Rare; needs softening ahead of it |
| Softener repair | $162–$985 | HomeAdvisor | Valve, resin, brine tank or seal problems |
Sizing a softener for 19 to 37 grains
Softeners are rated in grains of hardness removed between regenerations. Say a household uses 250 gallons a day. At 19 grains per gallon that's 4,750 grains a day; at 37 it's 9,250, or close to 65,000 grains a week (Illinois American Water hardness range). A 32,000-grain unit would regenerate about once a week at the low end and every three to four days at the high end, and sooner if it's set to a salt-saving capacity, as many are. Bigger families at the top of the range often move to a larger resin tank or a twin-tank model. Either way, the quote should rest on your measured number, not the district range.
What moves the price
- Capacity: more resin costs more up front but can regenerate less often.
- Valve: a demand-metered valve regenerates by gallons used, not by the calendar.
- Plumbing tie-in: many pre-1980 homes, which are most of Peoria's housing (U.S. Census), have no softener loop, so the installer cuts into the main line and adds a bypass.
- Drain and backflow: Illinois code calls for an air gap on the drain line and, for check-valve designs, a double check backflow preventer (77 Ill. Adm. Code 890.760).
- Haul-away: removing an old unit is often a separate line.
Running costs after the install
Salt is the main ongoing cost for ion exchange, and very hard water uses more of it. This Old House puts salt at roughly $5 to $10 a month for a typical household and annual professional service at $150 to $300. Potassium chloride avoids added sodium but costs more per bag. Carbon filters and RO systems add their own filter and membrane changes.
Repair before replacing
HomeAdvisor puts most softener repairs at $162 to $985, averaging $559, with rare jobs reaching $2,550. A stuck valve, a failed brine float or exhausted resin can usually be fixed for less than a new system. If the tank is sound and parts are still available, repair is often the better buy.
Before you sign
- Ask what hardness number the unit was sized to, and whether it was measured at your tap.
- Get grain capacity, valve model and warranty terms in writing.
- Ask for the unit's NSF/ANSI 44 listing, the standard the Illinois Plumbing Code names for softeners.
- Confirm the drain air gap, backflow device, bypass and removal of old equipment are in the price.
- Ask whether your job needs a City of Peoria plumbing permit.
Cost questions
How much should a new water softener system cost?
Fixr's national range is $1,100 to $3,000 installed, averaging about $2,500. Twin-tank systems run $1,000 to $5,000 (This Old House).
Why does hardness change the size I need?
Every grain has to be captured by the resin. At 19 to 37 grains per gallon, a small tank fills up fast and regenerates often, which costs salt and water, so a larger tank can be cheaper to run.
Where can I get a fair price on a softener?
Get at least two written quotes built on the same tested hardness, and compare capacity, valve and warranty, not just the total.
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