Novi Water Hardness & Quality Report (2026)
Water Hardness
10.4 grains per gallon
Source
river
pH Level
8.1
neutral = 7.0
Lead
0.006 mg/L
✓ Below action level
TDS
388.5 mg/L
Est. Daily Cost
$0.47
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 Novi, your appliances are currently losing 24% efficiency due to mineral buildup.
| Appliance | In Novi | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 3.7 yrs | 8.5 yrs | -56% |
| Washing Machine | 7 yrs | 12 yrs | -42% |
| Water Heater | 8.5 yrs | 15 yrs | -43% |
Regional Water Comparison
How Novi compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Novi, Michigan | 177.5 mg/L | 10 ppt | 🟠 Hard | river |
| Wixom, Michigan | 241 mg/L | 13.2 ppt | 🔴 Very Hard | river |
| Farmington Hills, Michigan | 97 mg/L | 5.9 ppt | 🟡 Moderately Hard | river |
| West Bloomfield Township, Michigan | 202.5 mg/L | 11.3 ppt | 🔴 Very Hard | river |
| Livonia, Michigan | 239 mg/L | 13.1 ppt | 🔴 Very Hard | river |
National Benchmark
How Novi compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Novi | 177.5 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Novi's Water Unique?
Local geology and source profile
Novi, Michigan, in northwest Oakland County — a major outer suburban Detroit city and one of Oakland County's fastest-growing communities, known as a major retail hub (Twelve Oaks Mall) and tech corridor — draws its municipal water supply from Lake Huron via the Great Lakes Water Authority (GLWA) and Oakland County Water Resources Commissioner, distributed to Novi through the City of Novi Department of Public Services. Water hardness in Novi measures 177.5 mg/L — classified as hard.
Novi's hard supply — substantially harder than Royal Oak (84 mg/L) or Pontiac (146 mg/L) in the inner Oakland County zones — reflects the extended distribution distance to the far northwest Oakland County Novi area. Novi is among the most distant Oakland County communities from the GLWA transmission infrastructure serving the inner Detroit suburban ring. The extended distribution path from the GLWA treatment plants through Oakland County to the far northwest Novi corridor accumulates significant additional mineral content in the cast-iron and ductile-iron transmission and distribution mains, producing the hard 177.5 mg/L. Additionally, Novi may supplement with local Oakland County well water, which has higher mineral content from the Silurian Michigan Basin dolomite formations.
At 177.5 mg/L, Novi residents face regular hard water challenges. Scale deposits form on faucet aerators, showerheads, and appliances within weeks — monthly descaling with citric acid solution is standard maintenance. City of Novi and GLWA consistently deliver water meeting all Michigan EGLE and EPA Safe Drinking Water Act requirements.
Geology & Source: Lake supply from Lake Huron via the Great Lakes Water Authority (GLWA) and Oakland County Water Resources Commissioner distributed to the City of Novi Department of Public Services — the outer Oakland County northwest suburban Lake Huron distribution; hard supply at 177.5 mg/L — reflecting the extended distribution length to the far northwest Oakland County Novi zone.