Eden Prairie Water Hardness & Quality Report (2026)
Water Hardness
14.1 grains per gallon
Source
river
pH Level
8.5
neutral = 7.0
Lead
0.007 mg/L
✓ Below action level
TDS
585.2 mg/L
Est. Daily Cost
$0.64
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 Eden Prairie, your appliances are currently losing 32% efficiency due to mineral buildup.
| Appliance | In Eden Prairie | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 1.6 yrs | 8.5 yrs | -81% |
| Washing Machine | 4.7 yrs | 12 yrs | -61% |
| Water Heater | 6 yrs | 15 yrs | -60% |
Regional Water Comparison
How Eden Prairie compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Eden Prairie, Minnesota | 241 mg/L | 6.7 ppt | 🔴 Very Hard | river |
| Chanhassen, Minnesota | 94.5 mg/L | 3.3 ppt | 🟡 Moderately Hard | river |
| Minnetonka, Minnesota | 213 mg/L | 6 ppt | 🔴 Very Hard | river |
| Hopkins, Minnesota | 265 mg/L | 7.2 ppt | 🔴 Very Hard | river |
| Shakopee, Minnesota | 120.5 mg/L | 3.9 ppt | 🟠 Hard | river |
National Benchmark
How Eden Prairie compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Eden Prairie | 241 mg/L | 🔴 High |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Eden Prairie's Water Unique?
Local geology and source profile
Eden Prairie, Minnesota, in southwest Hennepin County — one of the Twin Cities' most planned and affluent suburban communities, home of the Minnesota Vikings headquarters (TCO Performance Center) — draws its municipal water supply from deep bedrock groundwater wells via the City of Eden Prairie Utilities Water Division, accessing the Jordan Sandstone (Upper Cambrian) and Prairie du Chien Group (Lower Ordovician — Oneota Dolomite, New Richmond Sandstone) aquifer system beneath Hennepin County. Water hardness in Eden Prairie measures 241 mg/L — classified as very hard.
Eden Prairie's very hard supply reflects the Prairie du Chien Group dolomite aquifer — the same deep calcareous dolomite formation producing very hard water throughout the southwest and southeast Twin Cities Metro communities relying on deep bedrock wells (Woodbury: 220.5 mg/L, Eagan: 208 mg/L). The Prairie du Chien Oneota Dolomite ($CaMg(CO_3)_2$ — reactive dolomite) in Hennepin County is accessed by Eden Prairie's deep production wells at 400–600 feet depth. Eden Prairie's southwest location in the Metro means exclusively deep bedrock groundwater dependence (unlike Maple Grove which blends Minneapolis surface water), resulting in the higher 241 mg/L hardness from unblended pure Prairie du Chien dolomite dissolution.
At 241 mg/L, Eden Prairie 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 Utilities Water Division consistently delivers water meeting all Minnesota MDH and EPA Safe Drinking Water Act requirements.
Geology & Source: Groundwater from the Jordan Sandstone (Upper Cambrian) and Prairie du Chien Dolomite (Lower Ordovician) via the City of Eden Prairie Utilities Water Division — the southwest Hennepin County deep bedrock aquifer; very hard supply at 241 mg/L — reflecting the Prairie du Chien Dolomite's high carbonate dissolution in the southwest Metro deep bedrock wells.