# San Antonio Home Water Systems by My Home Water System

> Published water hardness for San Antonio, TX, 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
- Typical hardness, San Antonio Water System: 15 to 20 grains per gallon (Undated FAQ page). Source: SAWS water quality FAQs, https://www.saws.org/your-water/water-quality/saws-water-quality-concerns/faqs/
- USGS class, our reading of the published figures: very hard. Classes: https://www.usgs.gov/water-science-school/science/hardness-water
- SAWS water comes from the Edwards, Carrizo, Simsboro, Trinity and Wilcox aquifers, and some areas also get surface water from Canyon Lake.
- SAWS's 2026 annual report does not list hardness. It reports a free chlorine residual averaging 1.46 ppm in 2025.
- SAWS keeps a free chlorine residual, averaging 1.46 ppm in 2025. Source: SAWS 2026 Water Quality Report, https://www.saws.org/wp-content/uploads/2026/06/2026-SAWS-Water-Quality-Report.pdf
- Most SAWS water is groundwater from the Edwards, Carrizo, Simsboro, Trinity and Wilcox aquifers, with Canyon Lake surface water in some areas. Source: SAWS 2026 Water Quality Report, https://www.saws.org/wp-content/uploads/2026/06/2026-SAWS-Water-Quality-Report.pdf
- Sources last checked: 2026-10-26

## Pages
- [San Antonio water and quotes](https://sanantoniohomewatersystems.com/): the answer, the sources, common questions
- [Water data as JSON](https://sanantoniohomewatersystems.com/water.json)
- [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.