Home Services
Water Treatment: What It Costs and What to Check
Published September 24, 2026 · Last updated September 26, 2026
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The short answer
Most people spend about $1,500 on a water softener. Prices run from $150 to $11,000. The type of system and how hard your water is matter most.
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What affects your water treatment price
Price range
Water softener installation costs about $150 to $11,000. Most people spend around $1,500. Not a quote or an offer. Your price comes from the company. Source: Angi, 2026.
What moves the number
- What's in your water. Hard water needs a softener. Other problems, like iron or bacteria, need different systems.
- Type of system. A filter under the sink costs little. A whole-house system costs much more.
- Size. Bigger families use more water and need bigger systems.
- Plumbing and power. Some installs need new pipes or an outlet.
- Upkeep. Softeners need salt refills. Filters need new cartridges.
What to ask before you choose
- "What exactly will this system remove?" Ask them to show you the product's NSF certification. It proves what the system really removes.
- "What will upkeep cost each year?" Ask about salt, filters and service.
- "Is this sized for my household?"
- "What does the warranty cover?"
- "Can I see my water test results in writing?"
The catch: don't let the company selling the system be the only one to test your water. Their "free test" is part of the sales pitch. Get an independent test from a certified lab or your local health department first. And know this: a softener only fixes hard water. It doesn't make unsafe water safe to drink.
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Tell us what you need
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Cost information is not a live rate, quote or offer. A provider shown here is not an endorsement. Each provider sets its own prices, privacy and contact rules.
Questions people ask
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