Running costs
What it costs to run a water softener
Running cost$50–$150per year, mostly salt
Salt, 40 lb bag$5–$10sodium chloride
Potassium, 40 lb$25–$50per bag
Bags a yearAbout 12family of four
Running a salt-based softener typically costs $50 to $150 a year, mostly salt.
| Item | Typical cost |
|---|---|
| Sodium chloride, 40 lb bag | $5 to $10 |
| Potassium chloride, 40 lb bag | $25 to $50 |
| Bags per year, family of four | About 12 |
Harder water and an older, time-based valve use more salt. Estimate yours here.
Sources: HomeGuide, Inch Calculator, Angi.
These are published ranges and general guidance, not quotes. In the Bay Area, Soft Patagonian offers free water tests.
Common questions
How much salt does a water softener use?
A family of four with moderately hard water typically uses about one 40-pound bag a month. Very hard water can roughly double that.
How much does softener salt cost?
Sodium chloride is usually about $5 to $10 per 40-pound bag. Potassium chloride is about $25 to $50.