PA Private Well Regulations: What Owners Must Know

PA private well regulations differ sharply from public water rules. If you're one of Pennsylvania's roughly 870,000 households on a private well, the government doesn't test your water, doesn't require annual monitoring, and doesn't send you a quality report. Your water quality is entirely your responsibility.

That responsibility surprises many PA homeowners, especially those moving from public water systems. Understanding what the law requires — and what it doesn't — helps you protect your family's health and maintain your property value.

PA Private Well Regulations: The Legal Framework

Pennsylvania regulates private wells through a patchwork of state and local rules. There's no single "private well law PA" that covers everything. Here's how it breaks down.

PA DEP (Department of Environmental Protection) oversees water resources statewide but doesn't directly regulate individual private wells. DEP sets water quality standards that apply to public systems and provides voluntary guidance for private well owners.

Act 610 (Water Well Drillers License Act) requires well drillers to be licensed and to follow construction standards. Drillers must file a completion report with the PA Geological Survey for every new well. This law protects you during construction but doesn't cover ongoing maintenance or testing.

Local ordinances fill the gaps. Many PA townships and boroughs have adopted their own private well law PA requirements. Some require water testing at property transfer. Others set minimum construction standards that exceed state requirements.

Your municipality's Sewage Enforcement Officer or code enforcement office can tell you what applies to your property.

Pennsylvania Well Owner Responsibilities for Water Testing

Pennsylvania recommends — but doesn't require — annual testing for private wells. Here's what you should test and how often.

Contaminant	Recommended Frequency	Why It Matters in PA
Coliform bacteria	Annually	Indicates contamination from surface water or animal waste
Nitrates	Annually	Agricultural runoff in SE and south-central PA counties
pH	Annually	Affects pipe corrosion and treatment effectiveness
Iron and manganese	Every 3 years	Common in PA geology; causes staining and taste issues
Radon	Once (then every 5 years)	67% of wells in Reading Prong counties show elevated levels
Arsenic	Once (then every 5 years)	12% of tested PA wells exceed arsenic standards
Lead	Once (then after changes)	Older homes with lead solder joints or brass fittings
PFAS	Once (especially near military bases)	125+ contaminated PA systems identified; Warminster and Warrington areas

Basic water testing costs $50 to $150 through a certified PA lab. A full panel covering metals, VOCs, and bacteria runs $200 to $500. Contact the PA DEP for a list of certified laboratories in your area.

Well Water Testing Requirements PA: When Testing Is Mandatory

While routine testing is voluntary, some situations trigger mandatory well water testing requirements PA residents must follow.

Property transfers. Many PA municipalities require a water quality test before a home with a private well changes hands. FHA and VA lenders also require testing as a loan condition. Even where it's not required, buyers almost always request one.

New well construction. Licensed drillers must test new wells for bacteria before the homeowner uses the water. This baseline test is included in the drilling contract.

Suspected contamination events. If flooding reaches your wellhead, nearby construction disturbs the ground around your well, or you notice a sudden change in taste, color, or odor, test immediately. Don't wait for your annual schedule.

Mortgage refinancing. Some lenders require a current water test when refinancing a property with a private well, especially for government-backed loans.

Well Construction and Maintenance Standards in PA

PA's construction standards protect groundwater and your drinking water supply. Whether you're drilling a new well or maintaining an existing one, these rules apply.

New wells must meet minimum depth requirements, have proper casing and grouting, maintain setback distances from septic systems and property lines, and include a sanitary well cap. Your licensed driller handles compliance during construction.

For existing wells, Pennsylvania well owner responsibilities include maintaining the sanitary seal, keeping the well cap intact and secure, preventing surface water from pooling around the wellhead, and ensuring no contaminant sources (fuel tanks, chemical storage, manure piles) sit within the required setback distance.

If your well was drilled before modern standards took effect, it may lack proper grouting, have an inadequate casing, or sit too close to your septic system. Consider having a well inspector evaluate whether your older well meets current safety practices.

Decommissioning Abandoned Wells in PA

If your property has an old, unused well — common on rural PA properties that later connected to public water — you're responsible for properly decommissioning it. An open or poorly sealed abandoned well can:

• Allow contaminants to reach the groundwater table directly
• Create a physical safety hazard (falls, especially for children)
• Contaminate your neighbor's active well
• Violate local ordinances that require proper abandonment

Proper decommissioning involves removing the pump and equipment, filling the well with grout or bentonite clay, sealing the surface, and filing paperwork with the municipality. A licensed well driller or contractor should handle this. Cost ranges from $500 to $2,000 depending on well depth and condition.

County-Specific Well Regulations in PA

Some PA counties go beyond state requirements with their own rules. A few notable examples:

Chester County has some of the strictest private well standards in PA. Testing at property transfer is mandatory in many Chester County municipalities, and the county health department maintains extensive well water quality data.

Bucks County municipalities near former military installations in Warminster and Warrington have heightened PFAS testing recommendations and some of the strongest well monitoring programs in the state.

Centre County sits on karst limestone where groundwater moves through underground channels. Well contamination can travel long distances quickly, making regular testing especially critical.

Check with your county conservation district or search our Pennsylvania directory for well professionals who know your local PA private well regulations. You can also browse Chester County professionals directly.

Frequently Asked Questions About PA Private Well Regulations

Does Pennsylvania require annual well water testing?

No. PA recommends annual testing for coliform bacteria and nitrates, but it's not a state mandate. Some municipalities require testing at property transfer or new construction. Smart well owners test annually regardless — the cost is minimal compared to the health risks of untested water.

Who is responsible for private well water quality in PA?

The homeowner. Pennsylvania does not monitor, test, or regulate private well water quality after the well is drilled. You choose when to test, what to test for, and whether to install treatment systems. The state provides guidance but no oversight.

Can my well water make me sick without looking or smelling different?

Absolutely. Bacteria, nitrates, arsenic, radon, and PFAS are all colorless and odorless at levels that affect health. You can't tell by looking, smelling, or tasting your water whether it's safe. Only laboratory testing confirms water quality.

What do I do if my well test shows contamination?

Stop drinking the water and switch to bottled water. Retest to confirm the results — labs occasionally make errors. If confirmed, contact your county health department and a water treatment professional. Treatment options range from simple UV disinfection ($500 to $1,500) to whole-house filtration systems ($2,000 to $5,000) depending on the contaminant.