# Detroit Water Systems by My Home Water System

> Published water hardness for Detroit, MI, 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
- Total hardness, Detroit Water and Sewerage Department: Average 107 ppm, range 96-142 ppm (Calendar year 2025). Source: Detroit Water Quality Report, 2025 Results (DWSD - WQR - 2025 - Final), https://detroitmi.gov/sites/detroitmi.localhost/files/2026-06/DWSD%20-%20WQR%20-%202025%20-%20Final%20-1.pdf
- USGS class, our reading of the published figures: moderately hard to hard. Classes: https://www.usgs.gov/water-science-school/science/hardness-water
- The Detroit report lists a chlorine residual added to control microbes, ranging 0.59 to 1.08 ppm in 2025. It does not mention chloramine. Source: DWSD 2025 Water Quality Report, https://detroitmi.gov/sites/detroitmi.localhost/files/2026-06/DWSD%20-%20WQR%20-%202025%20-%20Final%20-1.pdf
- Detroit homes get Detroit River water treated at four Great Lakes Water Authority plants. Source: DWSD 2025 Water Quality Report, https://detroitmi.gov/sites/detroitmi.localhost/files/2026-06/DWSD%20-%20WQR%20-%202025%20-%20Final%20-1.pdf
- The Great Lakes Water Authority treats the water and moves it to the city, and the Detroit Water and Sewerage Department delivers it to neighborhoods. Source: DWSD 2025 Water Quality Report, https://detroitmi.gov/sites/detroitmi.localhost/files/2026-06/DWSD%20-%20WQR%20-%202025%20-%20Final%20-1.pdf
- Sources last checked: 2026-10-27

## Pages
- [Detroit water and quotes](https://detroitwatersystems.com/): the answer, the sources, common questions
- [Water data as JSON](https://detroitwatersystems.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
- Not taking requests yet. No prices are published; quotes come after an assessment at the home.
- Run by My Home Water System, operated by Aidren LLC.