North Royalton Water Hardness & Quality Report (2026)

Water Hardness

hard

~120–179 mg/L

Hard

estimated · not lab-verified

Source

river

pH Level

8.5

neutral = 7.0

Lead

0.008 mg/L

✓ Below action level

TDS

638.6 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 North Royalton, your appliances are currently losing 20% efficiency due to mineral buildup.

Appliance	In North Royalton	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 North Royalton compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ North Royalton, Ohio	≈ 120–179 mg/L	9.7 ppt	🟠 Hard	river
Broadview Heights, Ohio	≈ 120–179 mg/L	6.8 ppt	🟠 Hard	river
Parma Heights, Ohio	≈ 120–179 mg/L	6.4 ppt	🟠 Hard	river
Parma, Ohio	≈ 120–179 mg/L	6.4 ppt	🟠 Hard	river
Seven Hills, Ohio	≈ 120–179 mg/L	7.2 ppt	🟠 Hard	river

National Benchmark

How North Royalton compares to the USA average

Benchmark	Hardness	Appliance Risk
▶ North Royalton	≈ 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 North Royalton's Water Unique?

Local geology and source profile

Source: RiverTDS: 638.6 mg/LpH: 8.5

North Royalton, Ohio is served by the City of Cleveland Division of Water, the municipal utility supplying the community. The system draws from Lake Erie as its primary surface water source, supplemented by regional groundwater. Water is treated at Cleveland's treatment facilities — including coagulation, sedimentation, filtration, and chlorination — before distribution to North Royalton and surrounding communities in Cuyahoga County.

The supply originates from the Lake Erie watershed, which drains the Great Lakes region. Underlying geology consists of glacial deposits overlying Devonian-age shale and limestone formations. The Columbus Limestone and associated carbonate layers naturally dissolve calcium and magnesium into groundwater and surface water, producing the moderately hard water quality characteristic of northern Ohio communities.

At moderately hard levels, residents may experience scale buildup in water heaters, dishwashers, and kettles over time, reducing efficiency and appliance lifespan. Soap and detergent effectiveness is slightly reduced, requiring higher doses for optimal cleaning. Regular flushing of water heaters and cleaning of aerator screens are recommended maintenance practices. Many homeowners choose to install a water softener to reduce maintenance and improve appliance longevity. The Cleveland Division of Water publishes annual Consumer Confidence Reports detailing compliance with all federal Safe Drinking Water Act standards; residents should consult the latest report for current pH and lead/copper data.

Geology & Source: Lake Erie watershed; glacial deposits overlying Devonian-age shale and limestone — Columbus Limestone and associated carbonate formations dissolve calcium and magnesium into surface water, producing moderately hard supply typical of northern Ohio

Other Ohio Water Reports

Broadview Heights

≈ 120–179 mg/L

🟠 Hard

Parma Heights

≈ 120–179 mg/L

🟠 Hard

Parma

≈ 120–179 mg/L

🟠 Hard

Seven Hills

≈ 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 North Royalton's water safe to drink?

Yes. North Royalton'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 North Royalton?

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

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