Minnetonka Mills Water Hardness & Quality Report (2026)
Water Hardness
12.5 grains per gallon
Source
river
pH Level
8.3
neutral = 7.0
Lead
0.006 mg/L
✓ Below action level
TDS
485.6 mg/L
Est. Daily Cost
$0.57
energy & soap waste
Source: USGS Water Quality Portal · Updated 2026
0–60
mg/L
Soft
61–120
mg/L
Moderately Hard
121–180
mg/L
Hard
180+
mg/L
Very Hard
Appliance Damage Report
In Minnetonka Mills, your appliances are currently losing 28% efficiency due to mineral buildup.
| Appliance | In Minnetonka Mills | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 2.6 yrs | 8.5 yrs | -69% |
| Washing Machine | 5.7 yrs | 12 yrs | -53% |
| Water Heater | 7.1 yrs | 15 yrs | -53% |
Regional Water Comparison
How Minnetonka Mills compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Minnetonka Mills, Minnesota | 213.5 mg/L | 6 ppt | 🔴 Very Hard | river |
| Hopkins, Minnesota | 265 mg/L | 7.2 ppt | 🔴 Very Hard | river |
| Minnetonka, Minnesota | 213 mg/L | 6 ppt | 🔴 Very Hard | river |
| Plymouth, Minnesota | 128 mg/L | 4.1 ppt | 🟠 Hard | river |
| Eden Prairie, Minnesota | 241 mg/L | 6.7 ppt | 🔴 Very Hard | river |
National Benchmark
How Minnetonka Mills compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Minnetonka Mills | 213.5 mg/L | 🔴 High |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
Bring Badger-quality water to your Minnetonka Mills home
Shop water softeners on Amazon.com →
What Makes Minnetonka Mills's Water Unique?
Local geology and source profile
Minnetonka Mills, Minnesota — a historic community within the city of Eden Prairie, Hennepin County, west of the Twin Cities metropolitan area on Purgatory Creek near Nine Mile Creek — draws its municipal water supply from the Prairie du Chien–Jordan Aquifer via the City of Eden Prairie Water Division. Water hardness in Minnetonka Mills measures 213.5 mg/L — classified as very hard.
Minnetonka Mills' very hard supply reflects the west Hennepin County calcareous Paleozoic aquifer. The Prairie du Chien Dolomite (Ordovician Oneota and New Richmond Formations) in the Eden Prairie–Minnetonka Mills zone is the principal calcareous aquifer of the southwestern Twin Cities suburbs. The dolomite dissolution at the Prairie du Chien–Jordan contact in the Eden Prairie zone contributes very high dissolved calcium and magnesium — consistent with the very hard pattern of west Hennepin County suburban wells pumping this formation. The 213.5 mg/L is characteristic of the Prairie du Chien Dolomite in the Minneapolis western suburb aquifer zone.
At 213.5 mg/L, Minnetonka Mills residents face significant hard water challenges. Scale deposits form rapidly on all fixtures and tile — monthly descaling with citric acid solution is essential maintenance. City of Eden Prairie Water Division consistently delivers water meeting all Minnesota MDH and EPA Safe Drinking Water Act requirements.
Geology & Source: Groundwater from the Prairie du Chien–Jordan Aquifer via the City of Eden Prairie or Minnetonka Water Division — the Hennepin County Minneapolis western suburb (Ordovician Prairie du Chien Dolomite and Cambrian Jordan Sandstone); very hard supply at 213.5 mg/L in Hennepin County.