How does Fort Collins's water compare to the national average?

The USA national average is 151 mg/L. Fort Collins (≈ 60–119 mg/L) is 61 mg/L softer than average.

Fort Collins Water Hardness & Quality Report (2026)

Water Hardness

moderately hard

~60–119 mg/L

Moderately Hard

estimated · not lab-verified

Source

reservoir

pH Level

7.8

neutral = 7.0

Lead

0.007 mg/L

✓ Below action level

TDS

92 mg/L

Est. Daily Cost

$0.24

energy & soap waste

Source: See methodology section below · Updated 2026

moderately hard~60–119 mg/LModerately Hard · 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 Fort Collins, your appliances are currently losing 12% efficiency due to mineral buildup.

Appliance	In Fort Collins	Soft Water City	Efficiency Loss
Kettle	7.5 yrs	8.5 yrs	-12%
Washing Machine	10.6 yrs	12 yrs	-12%
Water Heater	13.2 yrs	15 yrs	-12%

Regional Water Comparison

How Fort Collins compares to its nearest neighbours

City	Hardness	Risk	Source
▶ Fort Collins, Colorado	≈ 60–119 mg/L	🟡 Moderately Hard	reservoir
Loveland, Colorado	≈ 120–179 mg/L	🟠 Hard	reservoir
Windsor, Colorado	≈ 120–179 mg/L	🟠 Hard	reservoir
Johnstown, Colorado	76 mg/L	🟡 Moderately Hard	reservoir
Greeley, Colorado	≈ 0–60 mg/L	🟢 Soft	reservoir

National Benchmark

How Fort Collins compares to the USA average

Benchmark	Hardness	Appliance Risk
▶ Fort Collins	≈ 60–119 mg/L	🟡 Low
USA National Avg	151 mg/L	🟠 Moderate
Scarsdale Top Rated	0.02 mg/L	🟢 None

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What Makes Fort Collins's Water Unique?

Local geology and source profile

Source: ReservoirTDS: 92 mg/LpH: 7.8

Fort Collins Utilities and the East Larimer County Water District (FCLWD) together serve over 95,000 residents in northern Larimer County, Colorado, providing drinking water from the Cache la Poudre River and Horsetooth Reservoir. Primary sources include surface water from the Poudre River supplemented by groundwater. Treatment occurs at facilities managed by Fort Collins Utilities, with continuous monitoring from source to tap. FCLWD publishes annual Water Quality Reports confirming compliance with all applicable state and federal standards.

The Cache la Poudre River watershed drains from the Rocky Mountains through the Front Range, where water contacts ancient limestone and sedimentary formations from Paleozoic shallow seas and the Colorado Mineral Belt's gypsum and carbonate rocks. This geology imparts a hard character to the supply as snowmelt runoff and groundwater dissolve substantial calcium and magnesium. Regional aquifers in the Denver Basin further contribute mineralisation, shaping the supply's hard profile despite dilution from mountain sources.

Scale buildup develops on showerheads, faucets, and appliances like water heaters and dishwashers, reducing efficiency and lifespan. White crusts form quickly on glass and fixtures; soap lathers poorly and laundry feels stiff. Regular vinegar descaling, aerator cleaning, and use of low-flow fixtures help mitigate effects; a water softener is recommended for households with frequent scaling issues. Water quality meets or exceeds state and federal standards per 2025 FCLWD and Fort Collins Utilities reports, with PFAS levels non-detectable and fluoride adjusted to 0.7 mg/L from natural 0.15–0.20 mg/L. Treatment includes filtration and disinfection; pH and lead/copper comply with all regulations.

Geology & Source: Cache la Poudre River watershed — Front Range limestone and sedimentary formations (Paleozoic-Mesozoic); Colorado Mineral Belt gypsum and carbonate rocks dissolve calcium and magnesium; Denver Basin aquifers add mineralization — hard supply

Other Colorado Water Reports

Loveland

≈ 120–179 mg/L

🟠 Hard

Windsor

≈ 120–179 mg/L

🟠 Hard

Johnstown

76 mg/L

🟡 Moderately Hard

Greeley

≈ 0–60 mg/L

🟢 Soft

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

Frequently Asked Questions

Is Fort Collins's water safe to drink?

Yes. Fort Collins's water meets all federal safety standards. The hardness is ≈ 60–119 mg/L (Moderately Hard), which is safe to drink. High hardness affects appliances and taste, but poses no health risk.

Do I need a water softener in Fort Collins?

Fort Collins's water is moderately hard at ≈ 60–119 mg/L. A water softener is generally not necessary, though a carbon filter can improve taste and remove any remaining chlorine.

How does Fort Collins compare to the USA average?

The USA national average is 151 mg/L. Fort Collins (≈ 60–119 mg/L) is 61 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 Fort Collins 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.