Shepherdsville 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

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

Appliance	In Shepherdsville	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 Shepherdsville compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ Shepherdsville, Kentucky	≈ 120–179 mg/L	7 ppt	🟠 Hard	river
Okolona, Kentucky	≈ 120–179 mg/L	7 ppt	🟠 Hard	river
Highview, Kentucky	≈ 180+ mg/L	6.1 ppt	🔴 Very Hard	river
Newburg, Kentucky	≈ 120–179 mg/L	6.1 ppt	🟠 Hard	river
Mount Washington, Kentucky	≈ 120–179 mg/L	4.6 ppt	🟠 Hard	river

National Benchmark

How Shepherdsville compares to the USA average

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

Local geology and source profile

Source: RiverTDS: 598.4 mg/LpH: 8.5

Shepherdsville, located in Bullitt County, Kentucky, relies on the Louisville Water Company for its municipal water. The primary source is the Ohio River, with water treated at both the Crescent Hill Water Treatment Plant, which draws directly from the river, and the B.E. Payne Water Treatment Plant, which uses riverbank filtration from the adjacent aquifer. This system ensures a steady supply for about 10,000 residents in the Shepherdsville area, with distribution points including the Shepherdsville Government Center.

The water's journey begins in the Ohio River watershed, influenced locally by the Salt River tributary. This region's geology is characterized by Mississippian-age limestone and dolomite formations, such as the Ste. Genevieve Limestone. As water flows through this karst terrain and infiltrates the ground, these carbonate rocks naturally dissolve minerals like calcium and magnesium, contributing to the water's hard character. Riverbank filtration further adds to the mineral content.

Homeowners in Shepherdsville may notice scale buildup on appliances like water heaters, dishwashers, and washing machines, which can decrease their efficiency and lifespan by 20-30%. Visible signs include white deposits on kettles and faucets. Regular maintenance, such as monthly vinegar descaling for showerheads and annual flushes for water heaters, is advised. Given the Louisville Water CCR's report of 123 ppm hardness, a water softener is recommended to prevent issues like spotting on dishes and to improve skin and hair feel.

Geology & Source: Mississippian limestone and dolomite; Ste. Genevieve and Bethel formations; carbonate rocks dissolve calcium and magnesium, imparting hard water.

Other Kentucky Water Reports

Okolona

≈ 120–179 mg/L

🟠 Hard

Highview

≈ 180+ mg/L

🔴 Very Hard

Newburg

≈ 120–179 mg/L

🟠 Hard

Mount Washington

≈ 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 Shepherdsville's water safe to drink?

Yes. Shepherdsville'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 Shepherdsville?

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

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