Farmington Water Hardness & Quality Report (2026)
Water Hardness
~120–179 mg/L
Hardestimated · not lab-verified
Source
groundwater
pH Level
8.1
neutral = 7.0
Lead
0.003 mg/L
✓ Below action level
TDS
429.5 mg/L
Est. Daily Cost
$0.40
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 20% efficiency due to mineral buildup.
| Appliance | In Farmington | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.8 yrs | 8.5 yrs | -20% |
| Washing Machine | 9.6 yrs | 12 yrs | -20% |
| Water Heater | 12 yrs | 15 yrs | -20% |
Regional Water Comparison
How Farmington compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Farmington, Utah | ≈ 120–179 mg/L | 7.4 ppt | 🟠 Hard | groundwater |
| Centerville, Utah | ≈ 120–179 mg/L | 3.2 ppt | 🟠 Hard | mixed |
| Kaysville, Utah | 222.56 mg/L | 0 ppt | 🔴 Very Hard | reservoir |
| Bountiful, Utah | 513 mg/L | 16.1 ppt | 🔴 Very Hard | reservoir |
| Woods Cross, Utah | ≈ 180+ mg/L | 0 ppt | 🔴 Very Hard | reservoir |
National Benchmark
How Farmington compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Farmington | ≈ 120–179 mg/L | 🟠 Moderate |
| 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
Farmington City Water Department serves the city of Farmington in Davis County, Utah. The utility operates three underground wells located throughout the city as its primary water source, supplying approximately 90% of the city's drinking water. The remaining 10% is purchased from the Weber Basin Water Conservancy District. The water system is divided into two service zones: areas south of 600 North and areas north of 600 North, each with differing hardness characteristics.
The Farmington water supply originates from the Basin and Range aquifer system underlying northern Utah, characterized by Paleozoic and Mesozoic limestone, dolomite, and carbonate rock formations. As groundwater percolates through these mineral-rich deposits, it dissolves calcium and magnesium carbonates, creating the hard water conditions typical of Utah. The region's arid climate necessitates heavy reliance on groundwater rather than surface water sources, which intensifies mineral accumulation in the supply.
Farmington's water is classified as hard, with the south zone measuring 8 grains per gallon and the north zone measuring 10 grains per gallon. Residents can expect scale buildup on fixtures, reduced soap effectiveness, and potential damage to water heaters and appliances over time. A water softener is recommended, particularly for the north zone. Regular maintenance of plumbing and appliances, along with periodic descaling, will help mitigate the effects of hard water. The city's water meets EPA standards for lead and copper — copper high of 0.529 mg/L (below the 1.3 mg/L MCL) and lead high of 0.0094 mg/L (below the 0.015 mg/L MCL). Residents can contact Farmington City Water Department at 801-451-2624 for water quality questions.
Geology & Source: Basin and Range aquifer system; Paleozoic and Mesozoic limestone and dolomite carbonate formations — calcium and magnesium dissolution in Utah's arid climate produces hard water
Other Utah 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.