Robbinsdale Water Hardness & Quality Report (2026)
Water Hardness
14.8 grains per gallon
Source
river
pH Level
8.5
neutral = 7.0
Lead
0.008 mg/L
✓ Below action level
TDS
635.4 mg/L
Est. Daily Cost
$0.68
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 Robbinsdale, your appliances are currently losing 34% efficiency due to mineral buildup.
| Appliance | In Robbinsdale | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 1.5 yrs | 8.5 yrs | -82% |
| Washing Machine | 4.2 yrs | 12 yrs | -65% |
| Water Heater | 5.4 yrs | 15 yrs | -64% |
Regional Water Comparison
How Robbinsdale compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Robbinsdale, Minnesota | 254 mg/L | 7 ppt | 🔴 Very Hard | river |
| Crystal, Minnesota | 103.5 mg/L | 3.5 ppt | 🟡 Moderately Hard | river |
| Golden Valley, Minnesota | 271.5 mg/L | 7.4 ppt | 🔴 Very Hard | river |
| Brooklyn Center, Minnesota | 180.5 mg/L | 5.3 ppt | 🔴 Very Hard | river |
| New Hope, Minnesota | 107 mg/L | 3.6 ppt | 🟡 Moderately Hard | river |
National Benchmark
How Robbinsdale compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Robbinsdale | 254 mg/L | 🔴 High |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Robbinsdale's Water Unique?
Local geology and source profile
Robbinsdale, Minnesota, in Hennepin County — a Hennepin County city adjacent to Crystal and Brooklyn Center in the north Minneapolis metro — receives its water from the Minneapolis Water Works, drawing from the Mississippi River (Hennepin County) through the Minneapolis metro distribution.
The extremely hard 254 mg/L hardness and TDS of 635.4 mg/L reflect the east-central Minnesota Minneapolis Mississippi River supply's very hard Till Plains calcareous-dolomitic character — consistent with other Minneapolis metro Hennepin County communities (Brooklyn Center: ~252 mg/L; Crystal: ~253 mg/L). The Mississippi River at Minneapolis drains the Minnesota Till Plains — Ordovician Prairie du Chien Dolomite (dolomitic — primary hardness contributor), Ordovician Jordan Sandstone (minor), Cretaceous Decorah Shale (calcareous), and Quaternary glacial till (calcareous — from Ordovician-Cretaceous carbonate bedrock).
At 254 mg/L with TDS 635, Robbinsdale's water is extremely hard. A water softener is strongly recommended to prevent rapid scale buildup. Without softening, appliance lifespans are significantly shortened. The PFAS level of 7.0 ppt warrants a certified reverse osmosis drinking water filter — Minneapolis–Saint Paul International Airport (Hennepin County — AFFF) and the Minneapolis metro industrial corridor contribute to Robbinsdale's readings.
Geology & Source: Robbinsdale in Hennepin County draws from the Minneapolis Water Works on the Mississippi River (Hennepin County, east-central Minnesota) — the Mississippi at Minneapolis drains the Minnesota Till Plains (Cretaceous Decorah Shale — calcareous, Ordovician Prairie du Chien Dolomite — dolomitic) via glacial till — Minnesota Hennepin County Mississippi River Till Plains calcareous watershed produces extremely hard water at 254 mg/L with TDS 635.4 mg/L.