Service areas / Aurora
Water softeners and filtration in Aurora, CO
How hard is Aurora water?
Hardness (as CaCO3) reported by Aurora Water: Average 136 ppm, range 87 to 198 (January 1 to December 31, 2025).
Moderately hard to very hard Aurora Water's figures for Aurora read as moderately hard to very hard on the USGS scale.
SoftMod.HardVery hard
Source: 2026 Water Quality Report (City of Aurora). Sources last checked October 28, 2026.
Aurora, CO water at a glance
- Water utility
- Aurora Water
- Published hardness
- 87 to 198 mg/L, about 5.1 to 11.6 grains per gallon, moderately hard to very hard on the USGS scale (source)
- Sources last checked
- October 28, 2026
Who you are working with. My Home Water System connects homeowners with [dealer to be named]. The dealer provides your estimate, contract, installation and ongoing service.
What does Aurora Water publish about Aurora water?
Aurora Water stores river water from three basins in a dozen reservoirs and samples hardness every day.
| Measure | As published | Period | Source |
|---|---|---|---|
| Hardness (as CaCO3) | Average 136 ppm, range 87 to 198 | January 1 to December 31, 2025 | 2026 Water Quality Report (City of Aurora) |
- Water comes from the Arkansas, Colorado and South Platte river basins, plus wells near the South Platte and Cherry Creek.
- The report lists chloramines as the main disinfectant.
What does 87 to 198 mg/L mean for a Aurora home?
87 to 198 mg/L is about 5.1 to 11.6 grains per gallon. The low end, 87 mg/L, is 33 mg/L under the 120 mg/L top of the USGS moderately hard class; Aurora's high end, 198 mg/L, is 18 mg/L over the 180 mg/L line where the USGS very hard class starts. (USGS hardness classes)
Which systems fit Aurora water?
Water softenerFor hardness; Aurora reads as moderately hard to very hard.Whole-home filterFor taste and odor from the disinfectant.Reverse osmosisDrinking water at one Aurora kitchen tap.
How does a Aurora quote work?
- Send a request from one of the 10 Aurora ZIP codes listed below.
- An assessment at your home, where your tap can be checked against Aurora Water's published 87 to 198 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 Aurora?
- Hardness (as CaCO3) reported by Aurora Water: Average 136 ppm, range 87 to 198 (January 1 to December 31, 2025).
- Is Aurora water hard or soft?
- Moderately hard to very hard. The low end, 87 mg/L, is 33 mg/L under the 120 mg/L top of the USGS moderately hard class; Aurora's high end, 198 mg/L, is 18 mg/L over the 180 mg/L line where the USGS very hard class starts.
- How many grains per gallon is Aurora water?
- The utility publishes hardness in mg/L, not grains. The published 87 to 198 mg/L is about 5.1 to 11.6 grains per gallon, converted by us at 17.1 mg/L per grain.
- How does Aurora water compare with nearby cities?
- Published hardness in Aurora spans 87 to 198 mg/L. Covered cities near Aurora: Denver 55 to 124 mg/L. Each figure comes from that city's own utility, not from Aurora's.
- Do I need a water softener in Aurora?
- Aurora Water publishes 87 to 198 mg/L for Aurora, which reads as moderately hard to very hard. A test at your house shows whether your tap matches it.
- Which water treatment system fits a Aurora home?
- Aurora's published 87 to 198 mg/L reads as moderately hard to very hard, which is what a softener treats. The installing company tests the water at your Aurora address before quoting.
- Is the water the same in every Aurora home?
- Aurora Water publishes one figure for its whole system (January 1 to December 31, 2025).
- Does a water softener remove chlorine?
- No. A softener targets hardness, not the disinfectant Aurora Water adds.
- How much does a water softener cost in Aurora?
- We publish no prices for Aurora. 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 Aurora yet. We will tell you the company's name and ask you before your request is shared with anyone.
- Is My Home Water System part of the Aurora city government or water utility?
- No. My Home Water System is not affiliated with Aurora Water; it copies and links the published figures.
- Is booking an assessment a purchase?
- No, and a request commits you to nothing.
ZIP codes this page covers
80010, 80011, 80012, 80013, 80014, 80016, 80017, 80018, 80019, 80045
Compare Aurora with other cities on hard water by city.