# Mesa Water Systems by My Home Water System

> Published water hardness for Mesa, 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
- Average hardness, City Zone, City of Mesa: About 12 grains per gallon (Calendar year 2025). Source: Mesa 2025 Water Quality Consumer Confidence Report, https://www.mesaaz.gov/files/content/public/v/16/utilities/water-wastewater/water-quality/english-water-quality-report-2025.pdf
- Average hardness, Eastern and Southern Zones, City of Mesa: 16 grains per gallon (Calendar year 2025). Source: Mesa 2025 Water Quality Consumer Confidence Report, https://www.mesaaz.gov/files/content/public/v/16/utilities/water-wastewater/water-quality/english-water-quality-report-2025.pdf
- USGS class, our reading of the published figures: very hard. Classes: https://www.usgs.gov/water-science-school/science/hardness-water
- The City Zone gets Salt River Project water from the Salt and Verde Rivers. The Eastern and Southern Zones get Central Arizona Project water from the Colorado River. Groundwater wells supply all zones.
- Mesa's undated water quality concerns page gives a wider range of 12 to 22 grains per gallon depending on the source serving the area.
- Mesa disinfects with chlorine dioxide and chlorine before water enters its pipes. Source: Mesa 2025 Water Quality Consumer Confidence Report, https://www.mesaaz.gov/files/content/public/v/16/utilities/water-wastewater/water-quality/english-water-quality-report-2025.pdf
- Mesa says every zone may get groundwater or a blend of surface water and groundwater at different times of the year, and some customers get only well water at times. Source: Mesa 2025 Water Quality Consumer Confidence Report, https://www.mesaaz.gov/files/content/public/v/16/utilities/water-wastewater/water-quality/english-water-quality-report-2025.pdf
- Sources last checked: 2026-10-26

## Pages
- [Mesa water and quotes](https://mesawatersystems.com/): the answer, the sources, common questions
- [Water data as JSON](https://mesawatersystems.com/water.json)
- [Mesa water by zone](https://mesawatersystems.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.