Farmington Water Hardness & Quality Report (2026)
Water Hardness
16.5 grains per gallon
Source
river
pH Level
7.5
neutral = 7.0
Lead
0.002 mg/L
✓ Below action level
TDS
157.2 mg/L
Est. Daily Cost
$0.75
energy & soap waste
Source: See methodology section below · 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 Farmington, your appliances are currently losing 38% efficiency due to mineral buildup.
| Appliance | In Farmington | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 1.5 yrs | 8.5 yrs | -82% |
| Washing Machine | 3.1 yrs | 12 yrs | -74% |
| Water Heater | 5 yrs | 15 yrs | -67% |
Regional Water Comparison
How Farmington compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Farmington, Michigan | 283 mg/L | 0 ppt | 🔴 Very Hard | river |
| Farmington Hills, Michigan | ≈ 120–179 mg/L | 0 ppt | 🟠 Hard | river |
| Livonia, Michigan | ≈ 120–179 mg/L | 0 ppt | 🟠 Hard | river |
| Novi, Michigan | ≈ 120–179 mg/L | 0 ppt | 🟠 Hard | river |
| West Bloomfield Township, Michigan | ≈ 180+ mg/L | 0 ppt | 🔴 Very Hard | river |
National Benchmark
How Farmington compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Farmington | 283 mg/L | 🔴 High |
| USA National Avg | 151 mg/L | 🟠 Moderate |
| Scarsdale Top Rated | 0.02 mg/L | 🟢 None |
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What Makes Farmington's Water Unique?
Local geology and source profile
The City of Farmington municipal water utility supplies water to residents and businesses in Farmington, Minnesota. This supply comes from a mix of local groundwater and surface water sources within the Minnesota River Basin watershed. The Farmington water system relies on the Upper Midwest glacial aquifer system, which sits atop Paleozoic-era carbonate and sandstone rock formations. Glacial deposits, such as till and outwash plains, are also part of the landscape that influences the water.
This region's geology is key to its water chemistry. The groundwater picks up minerals as it flows through limestone and dolomite bedrock. This process, common in glaciated areas of the Upper Midwest, results in naturally high levels of dissolved calcium and magnesium. These minerals are what give Farmington's water its characteristic hardness, a common trait found throughout the Minnesota River Basin and surrounding glaciated terrains.
With water hardness at 283 mg/L, homeowners in Farmington will likely notice scale buildup on fixtures, water heaters, and appliances. You might also find that soaps and detergents don't lather as well as they do with softer water. To combat this, many residents install water softeners to reduce mineral deposits and help appliances run more efficiently. Keeping up with appliance maintenance can also help manage the effects of mineral buildup. While hard water isn't a health risk—it even adds a bit of calcium and magnesium to your diet—it does impact your plumbing and daily chores.
Geology & Source: Upper Midwest glacial aquifer system; Quaternary glacial deposits over Paleozoic carbonate and sandstone; dissolution of calcium and magnesium from limestone and dolomite bedrock
Other Michigan Water Reports
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Frequently Asked Questions
Is Farmington's water safe to drink?
Do I need a water softener in Farmington?
How does Farmington compare to the USA average?
Data Sources & Methodology
Water quality data for Farmington is derived from geographic and geological modelling of the surrounding region. No federal monitoring station data was available for this location.
Water Hardness
Modelled estimate based on state-level USGS geological survey data for this region. No direct USGS Water Quality Portal measurement was matched to this city — the value reflects a statistical range calibrated to the state's dominant rock types and typical source water characteristics.
pH
Estimated from regional geology and source water characteristics. pH is correlated with water hardness and local bedrock — values may differ from utility-reported figures.
TDS — Total Dissolved Solids
Estimated using a derived ratio from water hardness and regional conductance profiles. TDS in natural water correlates strongly with total mineral content including hardness ions.
PFAS — Perfluoroalkyl and Polyfluoroalkyl Substances
EPA UCMR5 (5th Unregulated Contaminant Monitoring Rule, 2023–2025) — sum of PFAS compounds detected at the public water system serving this city. A value of 0 indicates the system was sampled with no detection above reporting limits.
Lead
Modelled estimate based on the EPA Lead and Copper Rule 90th-percentile tap-sample methodology. No publicly available per-city lead dataset with sufficient national coverage exists. Values are a conservative baseline derived from city population tier and infrastructure age — all estimates are maintained below the EPA action level of 0.015 mg/L.
Appliance Lifespan
Calculated from water hardness using a linear degradation model. Baseline lifespans represent soft-water performance (kettle: 8.5 yrs, washing machine: 12.0 yrs, water heater: 15.0 yrs). Hard water mineral scale progressively reduces operational life in direct proportion to hardness concentration.