Farmington Water Hardness & Quality Report (2026)
Water Hardness
7.4 grains per gallon
Source
groundwater
pH Level
7.7
neutral = 7.0
Lead
0.002 mg/L
✓ Below action level
TDS
294.4 mg/L
Est. Daily Cost
$0.34
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 Farmington, your appliances are currently losing 17% efficiency due to mineral buildup.
| Appliance | In Farmington | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 5.4 yrs | 8.5 yrs | -36% |
| Washing Machine | 8.9 yrs | 12 yrs | -26% |
| Water Heater | 10.6 yrs | 15 yrs | -29% |
Regional Water Comparison
How Farmington compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Farmington, New Mexico | 126 mg/L | 2 ppt | 🟠 Hard | groundwater |
| Durango, Colorado | 149 mg/L | 5.2 ppt | 🟠 Hard | reservoir |
| Gallup, New Mexico | 356 mg/L | 3.6 ppt | 🔴 Very Hard | groundwater |
| Montrose, Colorado | 84.5 mg/L | 3.2 ppt | 🟡 Moderately Hard | reservoir |
| Enchanted Hills, New Mexico | 224.5 mg/L | 2.7 ppt | 🔴 Very Hard | groundwater |
National Benchmark
How Farmington compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Farmington | 126 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
Bring Badger-quality water to your Farmington home
Shop water softeners on Amazon.com →
What Makes Farmington's Water Unique?
Local geology and source profile
Farmington, New Mexico, in San Juan County in the Four Corners region — the largest city in the San Juan County Four Corners region, a major energy industry hub (coal, natural gas, and oil — the San Juan Basin is one of the most productive natural gas basins in the US), adjacent to the Navajo Nation and a major Native American community services center, and gateway to the Aztec Ruins National Monument and Salmon Ruins — draws its municipal water supply from the San Juan River via the City of Farmington Utilities. Water hardness in Farmington measures 126 mg/L — classified as moderately hard.
Farmington's moderate hardness reflects the San Juan River's Colorado Plateau geology. The San Juan River above Farmington drains: the San Juan Mountains (the calcareous Colorado Pennsylvanian and Mississippian carbonate formations and Cretaceous Mancos Shale of the Colorado Plateau watershed — moderately calcareous sedimentary terrain); the Jurassic Morrison Formation (calcareous evaporite and carbonate zone); and the San Juan Basin Cretaceous calcareous formations. The City of Farmington's water treatment plant effectively treats the San Juan River supply, producing the moderate 126 mg/L at household taps.
At 126 mg/L, Farmington residents encounter moderate scale accumulation. Monthly cleaning with citric acid solution is recommended for faucet aerators and showerheads. City of Farmington Utilities consistently delivers water meeting all New Mexico NMED and EPA Safe Drinking Water Act requirements.
Geology & Source: River supply from the San Juan River (Navajo Dam and San Juan–Chama Project) via the City of Farmington Utilities Water Division — the San Juan County northwest New Mexico Colorado Plateau (Cretaceous and Jurassic calcareous Morrison and Mancos Shale Colorado Plateau sedimentary terrain and San Juan River alluvial supply); moderately hard supply at 126 mg/L in San Juan County.