PA · 67 COUNTIES

Well Water & Real Estate — Pennsylvania

Guidance for homebuyers, sellers, and real estate professionals dealing with private well properties in Pennsylvania.

County Risk Distribution

67counties
High Risk — 69% Moderate Risk — 28% Low / Info — 3%

Free County Water Quality Reports

Every county in Pennsylvania has a free downloadable water quality report covering contaminant data, detection rates, and risk context — useful for buyers, sellers, and agents alike.

Find Your County Report →

For Homebuyers

Before purchasing a property with a private well in Pennsylvania, commission an independent water test. Sellers are not always required to disclose water quality issues, and visual inspection of the water tells you nothing about dissolved contaminants.

Key steps before closing

Lender requirements

FHA and VA loans require a well water test before closing if the property uses a private well. The test must be performed by a state-certified lab and must meet EPA drinking water standards for coliform bacteria and nitrate at minimum. Some lenders require a broader panel. Build testing time into your closing timeline.

Find a Testing Lab in Pennsylvania

Higher-Risk Counties in Pennsylvania

The following counties have elevated contaminant detection rates based on available groundwater data. Buyers purchasing in these areas should prioritize comprehensive testing and budget for potential treatment.

Adams County pH, Nitrate High Allegheny County Hardness, Chloride High Beaver County Chloride, Hardness High Bedford County Nitrate, pH High Berks County PFOA, PFOS High Blair County pH, Nitrate High Bucks County PFOA, pH High Butler County PFOA, Chloride High Centre County pH, Nitrate High Chester County pH, Chloride High Clarion County pH, Hardness High Clearfield County Hardness, pH High Clinton County pH, Hardness High Cumberland County pH, Nitrate High Dauphin County pH, Sulfate High Delaware County pH, Chloride High Elk County Hardness, pH High Erie County Chloride, Hardness High Fayette County Sulfate, Iron High Fulton County Hardness, Nitrate High Huntingdon County pH, Nitrate High Indiana County pH, Sulfate High Jefferson County Hardness, pH High Lackawanna County pH, Hardness High Lancaster County pH, Nitrate High Lawrence County Hardness, Iron High Lehigh County PFOA, pH High Lycoming County pH, Chloride High Mercer County Hardness, Sulfate High Mifflin County pH, Nitrate High Montgomery County PFOA, PFOS High Northampton County PFOA, PFOS High Northumberland County pH, Sulfate High Perry County Nitrate, Chloride High Philadelphia County pH, Chloride High Potter County pH, Chloride High Schuylkill County pH, Iron High Snyder County Nitrate, pH High Somerset County pH, Sulfate High Sullivan County Hardness, Chloride High Susquehanna County Chloride, Hardness High Tioga County pH, Chloride High Union County pH, Hardness High Warren County Hardness, Sodium High Westmoreland County Chloride, Sulfate High York County PFBS, PFOA High

For Sellers

Having a current water test in hand before listing removes a common source of buyer anxiety and can prevent deals from falling through during inspection. It also demonstrates good faith transparency.

Get your well tested before listing →

For Real Estate Professionals

Every county in Pennsylvania has a free one-page water quality factsheet available as a PDF — useful for buyer consultations, disclosures, and due diligence packets. These reports cover detected contaminants, sample counts, risk context, and recommended testing for private well properties.

Browse County Reports →

County-by-County Risk Context

Water quality varies significantly across Pennsylvania. Browse by county to understand the specific contaminants detected and their risk levels.

Adams County High Allegheny County High Armstrong County Moderate Beaver County High Bedford County High Berks County High Blair County High Bradford County Moderate Bucks County High Butler County High Cambria County Moderate Cameron County Moderate Carbon County Moderate Centre County High Chester County High Clarion County High Clearfield County High Clinton County High Columbia County Moderate Crawford County Moderate

View all 67 counties →