How does Fargo's water compare to the national average?

The USA national average is 151 mg/L. Fargo (≈ 120–179 mg/L) is 1 mg/L softer than average.

Fargo Water Hardness & Quality Report (2026)

Water Hardness

hard

~120–179 mg/L

Hard

estimated · not lab-verified

Source

river

pH Level

8.2

neutral = 7.0

Lead

0.009 mg/L

✓ Below action level

TDS

654 mg/L

Est. Daily Cost

$0.40

energy & soap waste

Source: See methodology section below · Updated 2026

hard~120–179 mg/LHard · est.

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 Fargo, your appliances are currently losing 20% efficiency due to mineral buildup.

Appliance	In Fargo	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 Fargo compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ Fargo, North Dakota	≈ 120–179 mg/L	0 ppt	🟠 Hard	river
Moorhead, Minnesota	≈ 180+ mg/L	20.4 ppt	🔴 Very Hard	river
West Fargo, North Dakota	≈ 120–179 mg/L	0 ppt	🟠 Hard	reservoir
Fergus Falls, Minnesota	≈ 120–179 mg/L	0 ppt	🟠 Hard	river
Grand Forks, North Dakota	≈ 180+ mg/L	35.2 ppt	🔴 Very Hard	reservoir

National Benchmark

How Fargo compares to the USA average

Benchmark	Hardness	Appliance Risk
▶ Fargo	≈ 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 Fargo's Water Unique?

Local geology and source profile

Source: RiverTDS: 654 mg/LpH: 8.2

The City of Fargo Water Treatment Division operates the Fargo Water Filtration Plant, sourcing primarily from the Red River of the North with backup from the Sheyenne River. The plant serves the city of Fargo in Cass County and portions of adjacent areas in southeast North Dakota, treating up to 30 million gallons per day. Daily usage ranges from 8–10 million gallons in winter to 15–16 million gallons in summer. West Fargo, a nearby utility, draws from similar river sources within the same watershed.

The Red River watershed spans the valley formed by glacial Lake Agassiz, with soils derived from lacustrine clays and glacial outwash. Underlying geology includes the Cretaceous Pierre Shale and Niobrara Formation, but surface water chemistry is shaped by limestone and dolomite dissolution from the Tertiary Sentinel Butte and Slope Formations upstream. This carbonate mineral dissolution — amplified by agricultural runoff and natural drainage over carbonate terrains — imparts a hard character to the supply.

Hard water promotes scale buildup in water heaters, dishwashers, coffee makers, and pipes, reducing efficiency and lifespan. Laundry may appear dingy and soap scum forms in bathrooms. Regular descaling with vinegar, installing drain screens, and using high-efficiency detergents help mitigate these effects; a water softener is recommended for households. Fargo's 2024 Consumer Confidence Report confirms no violations, with water earning national recognition for taste. Treatment involves filtration, disinfection, and lime-soda softening; pH is managed above 9 for corrosion control.

Geology & Source: Red River of the North watershed; Quaternary glacial deposits over Cretaceous-Tertiary limestone and dolomite — Sentinel Butte and Slope Formations dissolve calcium and magnesium, producing hard water

Other North Dakota Water Reports

Moorhead

≈ 180+ mg/L

🔴 Very Hard

West Fargo

≈ 120–179 mg/L

🟠 Hard

Fergus Falls

≈ 120–179 mg/L

🟠 Hard

Grand Forks

≈ 180+ mg/L

🔴 Very Hard

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Notice an error or missing data? Help us keep this page accurate. If you spot incorrect water hardness, outdated utility info, or missing details, please let us know.

All reports are reviewed by our team. Thank you for supporting data quality!

Frequently Asked Questions

Is Fargo's water safe to drink?

Yes. Fargo's water meets all federal safety standards. The hardness is ≈ 120–179 mg/L (Hard), which is safe to drink. High hardness affects appliances and taste, but poses no health risk.

Do I need a water softener in Fargo?

At ≈ 120–179 mg/L (Hard), Fargo's water will cause significant limescale on kettles, washing machines, and water heaters. A water softener or descaler is strongly recommended to extend appliance lifespan and reduce energy bills by up to 20%.

How does Fargo compare to the USA average?

The USA national average is 151 mg/L. Fargo (≈ 120–179 mg/L) is 1 mg/L below the national average. The softest major city is Scarsdale at just 0.02 mg/L.

Data Sources & Methodology

Water quality data for Fargo is derived from geographic and geological modelling of the surrounding region. No federal monitoring station data was available for this location.

Estimated

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.

Estimated

Estimated from regional geology and source water characteristics. pH is correlated with water hardness and local bedrock — values may differ from utility-reported figures.

Estimated

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.

Measured

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.

Modelled

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.

Calculated

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.