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

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

Canton Water Hardness & Quality Report (2026)

Water Hardness

hard

~120–179 mg/L

Hard

estimated · not lab-verified

Source

reservoir

pH Level

7.6

neutral = 7.0

Lead

0.003 mg/L

✓ Below action level

TDS

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

Appliance	In Canton	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 Canton compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ Canton, Maryland	≈ 120–179 mg/L	5.6 ppt	🟠 Hard	reservoir
Baltimore, Maryland	≈ 120–179 mg/L	19 ppt	🟠 Hard	reservoir
Frankford, Maryland	≈ 0–60 mg/L	4.6 ppt	🟢 Soft	reservoir
Dundalk, Maryland	≈ 120–179 mg/L	7.9 ppt	🟠 Hard	reservoir
Rosedale, Maryland	≈ 120–179 mg/L	9.8 ppt	🟠 Hard	reservoir

National Benchmark

How Canton compares to the USA average

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

Local geology and source profile

Source: ReservoirTDS: 184.9 mg/LpH: 7.6

Canton, Maryland, receives its water from the Baltimore Department of Public Works (DPW). This municipal system draws from three large surface reservoirs: Liberty Reservoir, Loch Raven Reservoir, and Prettyboy Reservoir. These reservoirs collect water from the Patapsco River watershed. The water then travels to either the Montebello or Ashburton filtration plants for treatment before being sent out to homes and businesses.

The water's journey begins in the Piedmont physiographic province. The ground beneath the reservoirs is composed of ancient metamorphic rocks like schist, gneiss, and quartzite, mixed with older Paleozoic sedimentary layers containing limestone and dolomite. Because these sedimentary rocks are rich in carbonates, they readily dissolve minerals like calcium and magnesium into the water, leading to the characteristically hard water found in the Baltimore region.

This hard water means you'll likely notice scale buildup forming faster inside your water heaters, dishwashers, and kettles. You might also find that soaps and detergents don't lather as easily, requiring you to use more product for the same cleaning power. Many residents opt for water softeners to combat these issues and help their appliances last longer. Even with treatment, you might occasionally detect a chlorine or chloramine taste or smell, especially when algae blooms occur seasonally in the reservoirs. The DPW does offer free lead testing kits, as lead has been found in some older plumbing systems.

Geology & Source: Piedmont metamorphic rocks and Appalachian sedimentary formations; carbonate-rich geology produces hard water

Other Maryland Water Reports

Baltimore

≈ 120–179 mg/L

🟠 Hard

Frankford

≈ 0–60 mg/L

🟢 Soft

Dundalk

≈ 120–179 mg/L

🟠 Hard

Rosedale

≈ 120–179 mg/L

🟠 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 Canton's water safe to drink?

Yes. Canton'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 Canton?

At ≈ 120–179 mg/L (Hard), Canton'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 Canton compare to the USA average?

The USA national average is 151 mg/L. Canton (≈ 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 Canton 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.