Golden Valley Water Hardness & Quality Report (2026)
Water Hardness
15.9 grains per gallon
Source
river
pH Level
8.5
neutral = 7.0
Lead
0.008 mg/L
✓ Below action level
TDS
705.2 mg/L
Est. Daily Cost
$0.72
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 Golden Valley, your appliances are currently losing 36% efficiency due to mineral buildup.
| Appliance | In Golden Valley | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 1.5 yrs | 8.5 yrs | -82% |
| Washing Machine | 3.6 yrs | 12 yrs | -70% |
| Water Heater | 5 yrs | 15 yrs | -67% |
Regional Water Comparison
How Golden Valley compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Golden Valley, Minnesota | 271.5 mg/L | 7.4 ppt | 🔴 Very Hard | river |
| Robbinsdale, Minnesota | 254 mg/L | 7 ppt | 🔴 Very Hard | river |
| Crystal, Minnesota | 103.5 mg/L | 3.5 ppt | 🟡 Moderately Hard | river |
| New Hope, Minnesota | 107 mg/L | 3.6 ppt | 🟡 Moderately Hard | river |
| Saint Louis Park, Minnesota | 171 mg/L | 5.1 ppt | 🟠 Hard | river |
National Benchmark
How Golden Valley compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Golden Valley | 271.5 mg/L | 🔴 High |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Golden Valley's Water Unique?
Local geology and source profile
Golden Valley, Minnesota, in Hennepin County — a first-ring Minneapolis suburb in the Minneapolis-St. Paul metro, home of General Mills corporate headquarters, bordered by Minneapolis, St. Louis Park, and Plymouth — receives its municipal water from Minneapolis Water Works (MWW), which draws from the Mississippi River at the Minneapolis treatment plant on the upper Mississippi. Golden Valley is in the Minneapolis regional water distribution zone.
The very hard 271.5 mg/L hardness and elevated TDS of 705.2 mg/L reflect the upper Mississippi River's exceptional carbonate mineral loading at the Minneapolis reach — some of the hardest large-city river water in the US. The Mississippi River at Minneapolis drains the Driftless Area of southwestern Wisconsin and southeastern Minnesota — a vast landscape of Silurian Galena-Platteville Dolomite springs (some of the most prolific carbonate springs in North America) and the Ordovician Prairie du Chien Group dolomite platform. Additionally, the Minnesota River (a major Mississippi tributary) drains the Minnesota Till Plain's calcareous glacial terrain before entering the Mississippi at Fort Snelling. This prolific dolomite spring baseflow from the Driftless Area dolomite plateau and the Minnesota River's glacial carbonate contribution combine to produce exceptionally hard upper Mississippi water at Minneapolis.
At 271.5 mg/L with TDS 705 mg/L, Golden Valley residents face very hard water. Scale builds rapidly in appliances and fixtures within weeks, dishwashers require softener salt or rinse aid, and bathroom surfaces develop heavy calcium deposits. A whole-house water softener is strongly recommended. The PFAS level of 7.4 ppt warrants a certified drinking water filter — the Minneapolis metro's 3M manufacturing legacy (Maplewood, MN — 3M's global headquarters and major PFAS manufacturing site), the Mississippi River upstream PFAS discharge, and the metro industrial corridor produce one of the Midwest's most notable PFAS supply readings.
Geology & Source: Golden Valley in Hennepin County is served by Minneapolis Water Works treating the Mississippi River — the Mississippi at Minneapolis drains the Driftless Area dolomite springs (Silurian Galena-Platteville Dolomite) and the Minnesota Till Plain glacial carbonate terrain — Silurian dolomite spring baseflow produces very hard water at 271.5 mg/L with elevated TDS 705 mg/L in this Hennepin County suburb.