Grosse Pointe Woods Water Hardness & Quality Report (2026)
Water Hardness
4.8 grains per gallon
Source
river
pH Level
7.4
neutral = 7.0
Lead
0.001 mg/L
✓ Below action level
TDS
124.2 mg/L
Est. Daily Cost
$0.22
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 Grosse Pointe Woods, your appliances are currently losing 11% efficiency due to mineral buildup.
| Appliance | In Grosse Pointe Woods | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.9 yrs | 8.5 yrs | -19% |
| Washing Machine | 10.6 yrs | 12 yrs | -12% |
| Water Heater | 12.3 yrs | 15 yrs | -18% |
Regional Water Comparison
How Grosse Pointe Woods compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Grosse Pointe Woods, Michigan | 82 mg/L | 5.1 ppt | 🟡 Moderately Hard | river |
| Harper Woods, Michigan | 114.5 mg/L | 6.8 ppt | 🟡 Moderately Hard | river |
| Eastpointe, Michigan | 215 mg/L | 11.9 ppt | 🔴 Very Hard | river |
| Saint Clair Shores, Michigan | 123 mg/L | 7.2 ppt | 🟠 Hard | river |
| Roseville, Michigan | 244 mg/L | 13.4 ppt | 🔴 Very Hard | river |
National Benchmark
How Grosse Pointe Woods compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Grosse Pointe Woods | 82 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Grosse Pointe Woods's Water Unique?
Local geology and source profile
Grosse Pointe Woods, Michigan, in Wayne County — an affluent Wayne County city adjacent to Harper Woods and Grosse Pointe Farms on Lake St. Clair in the east Detroit suburb — receives its municipal water from the Great Lakes Water Authority (GLWA), drawing from Lake St. Clair through the GLWA Detroit metro distribution network.
The moderately soft 82 mg/L hardness and TDS of 124.2 mg/L are significantly softer than the inner Great Lakes communities (Grandville: 220 mg/L; Holland: 226 mg/L), reflecting the Lake St. Clair supply's dilute character relative to the western Lake Michigan-groundwater communities. Lake St. Clair receives input primarily from Lake Huron (via the St. Clair River), diluting the moderately calcareous underlying Silurian Salina Group evaporite and Devonian Detroit River Formation dolomite that dominates the southeast Michigan groundwater. The Lake St. Clair surface water dilution produces the moderately soft Grosse Pointe supply.
At 82 mg/L, Grosse Pointe Woods' water is moderately soft — light scale forms slowly in appliances, dishwashers remain efficient, and bathroom fixtures need occasional cleaning. Semi-annual descaling is appropriate. The PFAS level of 5.1 ppt warrants a certified drinking water filter — the Wayne County east Detroit industrial corridor and the Great Lakes PFAS background (historical Detroit industrial PFAS contributions to Lake St. Clair) contribute to Grosse Pointe Woods' readings.
Geology & Source: Grosse Pointe Woods in Wayne County draws from Great Lakes Water Authority on Lake St. Clair and Lake Erie (Wayne County, southeast Michigan) — the Great Lakes basin at Wayne County is underlain by Silurian Salina Group evaporite and Devonian Detroit River Formation (soluble dolomite) — Michigan Wayne County Great Lakes Authority Devonian-Silurian watershed produces moderately soft water at 82 mg/L with TDS 124.2 mg/L in this Wayne County Michigan city.