Water softeners and filtration in Scottsdale, AZ
How hard is Scottsdale water?
Approximate hardness, south of Indian School Rd reported by City of Scottsdale: 13-15 grains per gallon (230-260 mg/L) (Calendar year 2025). Approximate hardness, Indian School Rd to Chaparral Rd reported by City of Scottsdale: 13-17 grains per gallon (215-285 mg/L) (Calendar year 2025). Approximate hardness, north of Chaparral Rd reported by City of Scottsdale: 13-17 grains per gallon (230-290 mg/L) (Calendar year 2025).
Very hard City of Scottsdale's figures for Scottsdale read as very hard on the USGS scale.
Source: Scottsdale 2026 Water Quality Report. Sources last checked October 26, 2026.
What does City of Scottsdale publish about Scottsdale water?
Most of Scottsdale's water comes from the Central Arizona Project, and hardness varies by part of the city.
| Measure | As published | Period | Source |
|---|---|---|---|
| Approximate hardness, south of Indian School Rd | 13-15 grains per gallon (230-260 mg/L) | Calendar year 2025 | Scottsdale 2026 Water Quality Report |
| Approximate hardness, Indian School Rd to Chaparral Rd | 13-17 grains per gallon (215-285 mg/L) | Calendar year 2025 | Scottsdale 2026 Water Quality Report |
| Approximate hardness, north of Chaparral Rd | 13-17 grains per gallon (230-290 mg/L) | Calendar year 2025 | Scottsdale 2026 Water Quality Report |
- Scottsdale's 2025 supply was 71 percent Central Arizona Project, 13 percent Salt River Project, 8 percent groundwater and 8 percent recycled water.
- Scottsdale disinfects with chlorine. Its 2025 residual averaged 0.64 ppm.
- The city's undated hard water fact sheet lists higher figures for the same areas, up to 22-25 grains per gallon south of Indian School Rd. The current annual report figures are shown above.
Scottsdale water by area: where each one serves, its own figures and how it is treated.
What does 215 to 290 mg/L mean for a Scottsdale home?
215 to 290 mg/L is about 12.6 to 17.0 grains per gallon. The low end, 215 mg/L, is 35 mg/L over the 180 mg/L line where the USGS very hard class starts; Scottsdale's high end, 290 mg/L, is 110 mg/L over the 180 mg/L line where the USGS very hard class starts. (USGS hardness classes)
Which systems fit Scottsdale water?
How does a Scottsdale quote work?
- Send a request from one of the 10 Scottsdale ZIP codes listed below.
- An assessment at your home, where your tap can be checked against City of Scottsdale's published 215 to 290 mg/L.
- You get a written quote listing what is included.
- Installation and service by that company.
Common questions
- How hard is the water in Scottsdale?
- Approximate hardness, south of Indian School Rd reported by City of Scottsdale: 13-15 grains per gallon (230-260 mg/L) (Calendar year 2025). Approximate hardness, Indian School Rd to Chaparral Rd reported by City of Scottsdale: 13-17 grains per gallon (215-285 mg/L) (Calendar year 2025). Approximate hardness, north of Chaparral Rd reported by City of Scottsdale: 13-17 grains per gallon (230-290 mg/L) (Calendar year 2025).
- Is Scottsdale water hard or soft?
- Very hard. The low end, 215 mg/L, is 35 mg/L over the 180 mg/L line where the USGS very hard class starts; Scottsdale's high end, 290 mg/L, is 110 mg/L over the 180 mg/L line where the USGS very hard class starts.
- How many grains per gallon is Scottsdale water?
- In grains per gallon, as published: 13 to 15 grains per gallon (City of Scottsdale, approximate hardness, south of indian school rd, Calendar year 2025); 13 to 17 grains per gallon (City of Scottsdale, approximate hardness, indian school rd to chaparral rd, Calendar year 2025); 13 to 17 grains per gallon (City of Scottsdale, approximate hardness, north of chaparral rd, Calendar year 2025).
- Where does Scottsdale tap water come from?
- Scottsdale gets most of its surface water from the Colorado River, plus Salt and Verde River water, deep aquifer wells and recycled water. Source: Scottsdale 2026 Water Quality Report.
- Does water differ across Scottsdale?
- Scottsdale says hardness varies across the city and publishes a table of it by area in its report. Source: Scottsdale 2026 Water Quality Report.
- Does Scottsdale water change over time?
- Depending on the time of year, weather and demand, a home may get water from one source or a mix of sources. Source: Scottsdale 2026 Water Quality Report.
- Is Scottsdale water treated with chlorine or chloramine?
- Scottsdale uses chlorine to keep treated water disinfected. Source: Scottsdale 2026 Water Quality Report. A softener does not remove it.
- How does Scottsdale water compare with nearby cities?
- Published hardness in Scottsdale spans 215 to 290 mg/L. Nearby: Mesa 205 to 274 mg/L (converted from grains); Chandler 173 to 288 mg/L; Gilbert 113 to 300 mg/L (converted from grains); Phoenix 172 to 302 mg/L.
- Do I need a water softener in Scottsdale?
- City of Scottsdale publishes 215 to 290 mg/L for Scottsdale, which reads as very hard. A test at your house shows whether your tap matches it.
- How much does a water softener cost in Scottsdale?
- We publish no prices for Scottsdale. The installing company gives a written quote after an assessment at your home.
- Who installs the system?
- We have not named a local installing company for Scottsdale yet. We will tell you the company's name and ask you before your request is shared with anyone.
- Is Scottsdale Water Systems part of the city or the water utility?
- No. Scottsdale Water Systems is not affiliated with City of Scottsdale; it copies and links the published figures.
- Is booking an assessment a purchase?
- No, and a request commits you to nothing.
Which ZIP codes does this page cover?
85250, 85251, 85254, 85255, 85257, 85258, 85259, 85260, 85262, 85266
Nearby cities
Compare published hardness in other cities on hard water by city.
Machine-readable facts: water.json. Summary for AI assistants: llms.txt.