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Reading 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

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

ApplianceIn ReadingSoft Water CityEfficiency 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 Reading compares to its nearest neighbours

CityHardnessPFAS (ppt)RiskSource
Reading, Ohio≈ 120–179 mg/L8.1 ppt🟠 Hardriver
Sharonville, Ohio≈ 120–179 mg/L8.4 ppt🟠 Hardriver
Blue Ash, Ohio234.5 mg/L9.2 ppt🔴 Very Hardriver
Norwood, Ohio≈ 120–179 mg/L0 ppt🟠 Hardriver
Springdale, Ohio≈ 120–179 mg/L4 ppt🟠 Hardriver

National Benchmark

How Reading compares to the USA average

BenchmarkHardnessAppliance Risk
Reading≈ 120–179 mg/L🟠 Moderate
USA National Avg151 mg/L🟠 Moderate
Scarsdale Top Rated0.02 mg/L🟢 None

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What Makes Reading's Water Unique?

Local geology and source profile

Source: RiverTDS: 586.3 mg/LpH: 8.5

Reading City Public Water Supply serves Reading, Ohio, operating from its Market Street facility in Hamilton County. This municipal utility draws water primarily from surface sources purchased from regional providers, augmenting this supply with water treated through its own local infrastructure. The Reading water system taps into the Great Miami River watershed, a vital drainage network for southwestern Ohio. For any service inquiries or water quality questions, residents can contact the utility directly at (513) 733-3725.

The water's journey begins in the Great Miami River watershed, flowing through Ordovician-age bedrock formations. These include significant deposits of limestone and shale, characteristic of the Cincinnati Arch region. This geological landscape, rich in carbonate rock, allows dissolved minerals to naturally enter the water supply. Consequently, the groundwater and surface water mingling in Hamilton County develop a mineral content that classifies the water as hard, a common trait across much of southwestern Ohio.

This naturally hard water means homeowners will likely notice scale forming inside appliances like water heaters, kettles, and dishwashers over time. You'll also find that soaps and detergents don't lather as readily, requiring you to use more product for effective cleaning. Many households in Reading opt for water softeners, either whole-home systems or smaller point-of-use units, to combat these issues and potentially extend appliance life. While the utility confirms it met all federal and state health standards in its latest report, residents are always encouraged to consult detailed water quality data, available through the city's website or by calling the utility.

Geology & Source: Ordovician limestone and shale; carbonate bedrock creates moderate hardness

Other Ohio Water Reports

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Frequently Asked Questions

Is Reading's water safe to drink?
Yes. Reading'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 Reading?
At ≈ 120–179 mg/L (Hard), Reading'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 Reading compare to the USA average?
The USA national average is 151 mg/L. Reading (≈ 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 Reading 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

pH

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.