Comstock Park Water Hardness & Quality Report (2026)
Water Hardness
13.6 grains per gallon
Source
river
pH Level
8.5
neutral = 7.0
Lead
0.008 mg/L
✓ Below action level
TDS
603.6 mg/L
Est. Daily Cost
$0.62
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 Comstock Park, your appliances are currently losing 31% efficiency due to mineral buildup.
| Appliance | In Comstock Park | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 1.9 yrs | 8.5 yrs | -78% |
| Washing Machine | 5 yrs | 12 yrs | -58% |
| Water Heater | 6.3 yrs | 15 yrs | -58% |
Regional Water Comparison
How Comstock Park compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Comstock Park, Michigan | 233.5 mg/L | 12.9 ppt | 🔴 Very Hard | river |
| Northview, Michigan | 170 mg/L | 9.6 ppt | 🟠 Hard | river |
| Grand Rapids, Michigan | 218 mg/L | 12.1 ppt | 🔴 Very Hard | river |
| Walker, Michigan | 147 mg/L | 8.5 ppt | 🟠 Hard | river |
| East Grand Rapids, Michigan | 206.5 mg/L | 11.5 ppt | 🔴 Very Hard | river |
National Benchmark
How Comstock Park compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Comstock Park | 233.5 mg/L | 🔴 High |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
Bring Badger-quality water to your Comstock Park home
Shop water softeners on Amazon.com →
What Makes Comstock Park's Water Unique?
Local geology and source profile
Comstock Park, Michigan, in Kent County — a Kent County unincorporated community adjacent to Grand Rapids and Rockford in west Michigan — receives its water from the Grand Rapids Water System, drawing from the Grand River through the west Michigan distribution.
The very hard 233.5 mg/L hardness and TDS of 603.6 mg/L reflect the Kent County supply's very hard west Michigan dolomitic limestone character — the Silurian Niagaran Dolomite and Devonian Traverse Limestone are highly dolomitic-calcareous formations in the west Michigan limestone plain; the Grand River at Kent County flows through some of the most dolomite-rich geology in Michigan, producing very hard water throughout the Grand Rapids metropolitan area (compare Grand Rapids MI: 229/593 in Kent County comparable; Rockford MI: 237/614 in Kent County comparable; Comstock Park consistent very hard from the same Kent County Grand River Silurian dolomitic supply). The Grand River supply — Silurian Niagaran Dolomite (highly dolomitic — primary hardness contributor), Devonian Traverse Limestone (calcareous — secondary contributor), and Quaternary Grand River alluvium (calcareous — TDS contributor).
At 233.5 mg/L with TDS 604, Comstock Park's water is very hard — a water softener is strongly recommended to protect plumbing and appliances. The PFAS level of 12.9 ppt is very high — a certified filter with PFAS removal is strongly recommended. Review the Grand Rapids Water System's annual water quality report.
Geology & Source: Comstock Park in Kent County draws from the Grand Rapids Water on the Grand River supply (Kent County, west Michigan) — the west Michigan limestone plain at Kent County draws from Silurian Niagaran Dolomite (highly dolomitic) and Devonian Traverse Limestone (calcareous) — Michigan Kent County Grand River Silurian dolomitic supply produces very hard water at 233.5 mg/L with TDS 603.6 mg/L.