Confirm the provider
Use the water bill, lease, closing documents, or utility account. Do not assign a city's largest utility to every address.
Indiana metro guide
Louisville Metro and Southern Indiana
Clark, Floyd, Harrison, Scott, Washington, and Jefferson counties include municipal systems, purchased-water zones, groundwater, and Ohio River regional influences.
Regional pattern
One metro can contain several very different water systems.
Clark, Floyd, Harrison, Scott, Washington, and Jefferson counties include municipal systems, purchased-water zones, groundwater, and Ohio River regional influences.
This region's planning themes include provider boundaries, groundwater minerals, Ohio River source questions, PFAS context, and cross-river service planning. The current directory contains 9 researched city pages, with a launch snapshot of 8 groundwater public supply, 1 address-dependent public supply. These categories are orientation—not a substitute for the current report at a specific address.
Boundary warning: postal city, municipal boundary, utility service area, and metropolitan area are not the same thing. Verify the provider shown on the current water bill.
Cross-border regional guide
Use separate evidence for the Indiana and Kentucky sides of Louisville Metro.
The regional economy crosses the Ohio River, but public-water systems, regulators, utility reports, and source-water evidence remain state- and provider-specific. Indiana city pages stay focused on Indiana addresses. Kentucky properties should be matched to the Louisville, Kentucky utility and report path.
Louisville, Kentucky Water Guide
Address matters: use the utility, PWSID, and current report for the property’s side of the Ohio River.
City directory
Louisville Metro and Southern Indiana city water guides
Open a city page to see the likely public system, source type, PWSID when verified, report-reading questions, PFAS and UCMR context, and treatment decision path.
CharlestownClark County · GroundwaterClarksvilleClark County · Groundwater / address-dependentCorydonHarrison County · GroundwaterJeffersonvilleClark County · Groundwater / address-dependentMadisonJefferson County · GroundwaterNew AlbanyFloyd County · Provider-dependentSalemWashington County · Groundwater or local supplyScottsburgScott County · GroundwaterSellersburgClark County · Groundwater
Read the newest report
Check the reporting year, source, detected contaminants, compliance statements, lead information, and unregulated monitoring notes.
Test the unresolved question
Use an appropriate laboratory or field test when the report cannot answer a premise-plumbing, private-well, or address-specific question.
Evidence first
Turn a water question into a documented plan.
Confirm the supplier or well, collect the right evidence, compare complete treatment claims, and review installation and financing before buying.