# Scottsdale Water Systems by My Home Water System

> Published water hardness for Scottsdale, AZ, copied from the utility's own reports, and a way to request a written water treatment quote from one local company. Not a water utility.

## Water facts, as published
- Approximate hardness, south of Indian School Rd, City of Scottsdale: 13-15 grains per gallon (230-260 mg/L) (Calendar year 2025). Source: Scottsdale 2026 Water Quality Report, https://www.scottsdaleaz.gov/docs/default-source/scottsdaleaz/water/water-quality/annual-reports/2026-water-quality-report.pdf?sfvrsn=18a67596_1
- Approximate hardness, Indian School Rd to Chaparral Rd, City of Scottsdale: 13-17 grains per gallon (215-285 mg/L) (Calendar year 2025). Source: Scottsdale 2026 Water Quality Report, https://www.scottsdaleaz.gov/docs/default-source/scottsdaleaz/water/water-quality/annual-reports/2026-water-quality-report.pdf?sfvrsn=18a67596_1
- Approximate hardness, north of Chaparral Rd, City of Scottsdale: 13-17 grains per gallon (230-290 mg/L) (Calendar year 2025). Source: Scottsdale 2026 Water Quality Report, https://www.scottsdaleaz.gov/docs/default-source/scottsdaleaz/water/water-quality/annual-reports/2026-water-quality-report.pdf?sfvrsn=18a67596_1
- USGS class, our reading of the published figures: very hard. Classes: https://www.usgs.gov/water-science-school/science/hardness-water
- 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 uses chlorine to keep treated water disinfected. Source: Scottsdale 2026 Water Quality Report, https://www.scottsdaleaz.gov/docs/default-source/scottsdaleaz/water/water-quality/annual-reports/2026-water-quality-report.pdf?sfvrsn=18a67596_1
- 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, https://www.scottsdaleaz.gov/docs/default-source/scottsdaleaz/water/water-quality/annual-reports/2026-water-quality-report.pdf?sfvrsn=18a67596_1
- 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, https://www.scottsdaleaz.gov/docs/default-source/scottsdaleaz/water/water-quality/annual-reports/2026-water-quality-report.pdf?sfvrsn=18a67596_1
- Scottsdale says hardness varies across the city and publishes a table of it by area in its report. Source: Scottsdale 2026 Water Quality Report, https://www.scottsdaleaz.gov/docs/default-source/scottsdaleaz/water/water-quality/annual-reports/2026-water-quality-report.pdf?sfvrsn=18a67596_1
- Sources last checked: 2026-10-26

## Pages
- [Scottsdale water and quotes](https://scottsdalewatersystems.com/): the answer, the sources, common questions
- [Water data as JSON](https://scottsdalewatersystems.com/water.json)
- [Scottsdale water by area](https://scottsdalewatersystems.com/by-area/): where each area or utility serves, its own figures and treatment
- [Water softeners](https://www.myhomewatersystem.com/water-softeners/), [whole-home filtration](https://www.myhomewatersystem.com/whole-home-filtration/), [reverse osmosis](https://www.myhomewatersystem.com/reverse-osmosis/)
- [Hard water by city](https://www.myhomewatersystem.com/hard-water-by-city/): published hardness for every city we cover

## Status
- Taking requests. No prices are published; quotes come after an assessment at the home.
- Run by My Home Water System, operated by Aidren LLC.