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

The USA national average is 151 mg/L. Dunkirk (146.5 mg/L) is 4 mg/L softer than average.

Dunkirk Water Hardness & Quality Report (2026)

Water Hardness

146.5mg/L

Hard

8.6 grains per gallon

Source

reservoir

pH Level

7.8

neutral = 7.0

Lead

0.007 mg/L

✓ Below action level

TDS

208 mg/L

Est. Daily Cost

$0.39

energy & soap waste

Source: See methodology section below · Updated 2026

146.5mg/L as CaCO₃Hard

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

Appliance	In Dunkirk	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 Dunkirk compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ Dunkirk, New York	146.5 mg/L	0 ppt	🟠 Hard	reservoir
Fredonia, New York	≈ 120–179 mg/L	0 ppt	🟠 Hard	reservoir
Jamestown, New York	171.2 mg/L	0 ppt	🟠 Hard	groundwater
Buffalo, New York	≈ 120–179 mg/L	5 ppt	🟠 Hard	river
Lackawanna, New York	≈ 120–179 mg/L	8.3 ppt	🟠 Hard	reservoir

National Benchmark

How Dunkirk compares to the USA average

Benchmark	Hardness	Appliance Risk
▶ Dunkirk	146.5 mg/L	🟠 Moderate
USA National Avg	151 mg/L	🟠 Moderate
Scarsdale Top Rated	0.02 mg/L	🟢 None

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What Makes Dunkirk's Water Unique?

Local geology and source profile

Source: ReservoirTDS: 208 mg/LpH: 7.8

The City of Dunkirk Water Department provides water to about 11,848 residents in Dunkirk, Chautauqua County, New York. Their treatment facilities use conventional methods, including chlorine pre-oxidation and disinfection, to purify water drawn from surface supplies within the Lake Erie watershed. This region's western New York State setting is crucial to the water's origin. The Dunkirk water supply begins as surface water within the Lake Erie drainage basin.

The watershed's geology is marked by Devonian-age bedrock formations, primarily shales and siltstones belonging to the Appalachian Basin. These ancient rocks are covered by glacial deposits, which can influence the water's mineral makeup. The interplay between the watershed's geology and the natural cycles of precipitation and runoff causes the mineral content of the finished water to fluctuate throughout the year.

Homeowners might notice that water from this supply can affect appliances over time. Regular cleaning of fixtures and appliances can help manage any buildup. While the City of Dunkirk's 2026 water quality report indicated two contaminants exceeded EPA guidelines in certain areas, the overall quality score was 80/100. For detailed information, residents are encouraged to review the city's Annual Water Quality Report, which is available through Chautauqua County or the city's official communications channels.

Geology & Source: Appalachian Basin Devonian shales and siltstones; glacial deposits; moderately mineralized surface water

Other New York Water Reports

Fredonia

≈ 120–179 mg/L

🟠 Hard

Jamestown

171.2 mg/L

🟠 Hard

Buffalo

≈ 120–179 mg/L

🟠 Hard

Lackawanna

≈ 120–179 mg/L

🟠 Hard

Report an Issue

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 Dunkirk's water safe to drink?

Yes. Dunkirk's water meets all federal safety standards. The hardness is 146.5 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 Dunkirk?

At 146.5 mg/L (Hard), Dunkirk'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 Dunkirk compare to the USA average?

The USA national average is 151 mg/L. Dunkirk (146.5 mg/L) is 4 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 Dunkirk 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.