Buying an Older Chester or Lancaster County Home? A Pre-Purchase Plumbing and Sewer Checklist

Older homes in Chester and Lancaster County have a lot going for them: stone farmhouses, mature trees, large lots, and character you simply can’t build new. What they also have, hidden underground and inside walls, is plumbing and sewer infrastructure that could be decades past its reliable lifespan. A standard home inspection won’t tell you what’s actually happening inside your drain lines or your septic tank. And the repairs that come as surprises after closing, whether it’s a failed drain field or a collapsed clay sewer lateral, can run well into five figures.

Here’s the direct answer to the question most buyers don’t think to ask: always request a sewer scope inspection and, if the property uses a septic system, a full septic evaluation before closing on any home built before 1990 in Chester County or Lancaster County, PA. This checklist walks you through everything else you should be looking for.

Why Older Chester and Lancaster County Homes Carry Higher Plumbing Risk

Much of Chester County’s housing stock dates from the mid-1800s through the 1970s. Lancaster County has a similar spread, with many rural properties still using on-lot septic systems that haven’t been significantly updated since installation. Both counties have neighborhoods with mature tree canopies, which means root intrusion into sewer lines is extremely common.

The pipe materials used in homes built before 1985 are a major factor. Clay sewer laterals were standard until PVC became the norm. Orangeburg pipe (a compressed wood fiber and tar product used briefly post-World War II) degrades into an oval shape and eventually collapses on its own timeline. Cast iron drains inside the home are durable but corrode from the inside out over 50-75 years, and you can’t see that from a visual inspection.

None of this means you shouldn’t buy an older home in these counties. It means you need to know what you’re buying. A $400 camera inspection before closing is far better than a $12,000 sewer line replacement three months after moving in.

The Sewer Line Inspection: What It Covers and What It Can Reveal

A sewer scope inspection sends a small waterproof camera through your main sewer line from the cleanout inside or outside the home to the municipal connection or septic tank. It takes 30-60 minutes and gives you a real-time video of what’s happening underground. Here’s what it commonly uncovers in Chester and Lancaster County homes:

•        Root intrusion: Tree roots enter through clay pipe joints and crack seams. You’ll see anything from hairline wisps to full root masses blocking the line. Common in neighborhoods with large oaks and maples.

•        Pipe bellies: A section of sewer line that has sagged downward due to soil settlement, creating a low spot where solids collect instead of flowing through. Very common in older homes where the soil has shifted over decades.

•        Orangeburg pipe: If the home was built between 1945 and 1960, there’s a meaningful chance the sewer lateral is Orangeburg. A camera will show the deformed, egg-shaped cross-section. This is a replacement, not a repair.

•        Cracked or offset joints: Clay pipe is joined in short sections. Joints can shift over time, especially near tree roots or where soil has settled. Offset joints allow ground water in and sewage out.

•        Calcification and grease buildup: Decades of use leave buildup on pipe walls that narrows the effective diameter. This is often a cleaning issue, not a replacement issue, which is useful leverage at the negotiating table.

Ask the inspector to provide a copy of the video. If anything significant shows up, you can share it with a plumber for a repair estimate or use it in price negotiations with the seller.

The Septic System Checklist for Chester Springs and Lancaster County Properties

Large portions of Chester Springs, West Chester’s rural surroundings, and most of rural Lancaster County rely on private on-lot septic systems. Pennsylvania doesn’t mandate septic inspections for all home sales statewide, but many townships in both counties do require them, and your lender may as well. Even when it’s not required, skipping it is a significant financial risk. Septic system services repairs or full system replacement in PA can cost $20,000 to $30,000 or more depending on system type and site conditions.

A proper pre-purchase septic inspection (not just a visual check) should include:

•        Locating and uncovering the tank access risers. Older tanks from the 1960s-1970s often have no risers and require the inspector to probe the yard.

•        Pumping the tank and inspecting the inlet and outlet baffles. Collapsed or missing baffles allow solids to flow into the drain field, which accelerates drain field failure.

•        A hydraulic load test: running water in the home to see how the system handles a real flow of effluent.

•        Visual inspection of the drain field area for signs of saturation: spongy ground, standing water, strong odor, or unusually lush grass directly over the field.

•        Asking the seller for any records of pumping history, repair permits, or system upgrades.

In Chester Springs and similar areas, homes with mound systems or drip irrigation systems require a certified inspector familiar with those system types. Not all septic inspectors are. Ask specifically about the inspector’s experience with alternative systems if the listing mentions one.

Red Flags to Watch for During Your Home Walkthrough

Before any professional inspection, your own walkthrough can reveal warning signs that warrant extra scrutiny. These don’t necessarily mean a deal-breaker, but they should prompt questions:

•        Slow drains in multiple fixtures at once. A single slow drain is usually localized. Multiple slow drains suggest a main line issue.

•        Gurgling sounds from drains or toilets when you run water elsewhere in the house.

•        Water stains on basement floors or walls near floor drains, especially older stains that suggest repeated backup.

•        A sewage or sulfur smell anywhere in the home, including near basement floor drains.

•        Unusually bright green or wet grass in the yard, especially in a line running from the house toward the street or toward the back of the property.

•        Evidence of recent cosmetic repairs over stained areas (fresh paint over a basement floor drain surround, for example).

•        No visible clean-out access for the main sewer line. Older homes sometimes don’t have one, which makes camera inspections more difficult and future clearing jobs more expensive.

If the property has a grinder pump (common in developments where homes sit below the municipal sewer connection), ask when it was last serviced. Grinder pump replacement runs $1,500 to $3,000 and they typically last 7-15 years. Check for a service sticker or ask the seller for maintenance records.

Plumbing Inside the Home: What Older Pipe Materials Mean for You

The sewer scope covers the drain side. But the supply side of the plumbing, the pipes that bring water into the home, has its own age-related considerations. If the home was built before the 1980s, check what material the supply lines are made of. Your home inspector should note this, but ask directly if they don’t. Tri-County Water Services handles pipe repair and replacement for homes across Chester and Lancaster Counties when older materials reach the end of their service life.

•        Lead service lines: If the home is connected to a municipal water supply and was built before 1986, there’s a chance the service line from the street to the home is lead. Pennsylvania has an ongoing lead service line replacement program; ask the local water authority whether this property has been identified and when replacement is scheduled.

•        Galvanized steel pipes: These were standard in homes built from the 1930s through the 1960s. They corrode from the inside and restrict flow over time. If you see low water pressure throughout the house and older galvanized supply lines, budget for repiping.

•        Polybutylene (gray plastic): Used from roughly 1978 to 1995, polybutylene reacts with chlorine in treated water and becomes brittle. It fails without warning and is not repairable, only replaceable. Look for gray or dark gray flexible pipes in basements and crawl spaces.

•        Copper: Generally the best-case scenario in older homes. Copper lasts 50-70+ years and handles well. Look for greenish staining at joints, which can indicate pinhole leaks or leaks that were patched.

How to Use These Inspections in Negotiations

Finding issues during inspection doesn’t have to kill a deal. In fact, it’s exactly what the inspection contingency period is for. Here’s how to approach it:

If the sewer scope shows root intrusion or calcification that can be addressed with hydro-jetting, request a credit from the seller or ask them to have it cleared before closing. That’s typically a $300-$600 repair.

If the scope shows Orangeburg pipe, offset joints, or a belly that requires excavation and residential sewer line repair, get a contractor estimate and negotiate a price reduction. Don’t accept a seller’s verbal assurance that ‘it’s been fine.’ The camera showed you what’s actually there.

For septic issues, a failing drain field or a tank with damaged baffles is a significant negotiating point. Replacement costs in Chester County or Lancaster County vary by system type, lot conditions, and permit requirements. Get at least two estimates from licensed PA contractors before agreeing to any credit amount.

If you’re already under contract on a Chester County or Lancaster County property and need a professional assessment, contact Tri-County Water Services to schedule a sewer camera inspection or septic evaluation. We serve Chester, Lancaster, Berks, and Delaware Counties and can often accommodate time-sensitive inspection requests.

Don’t Let What’s Underground Become Your Problem After Closing

Buying an older home in Chester County or Lancaster County is a smart move for a lot of reasons. The land values are strong, the communities are established, and the homes have a quality of construction you won’t find in new builds. But older homes require due diligence that goes beyond what a standard home inspection covers.

A sewer scope inspection and a full septic evaluation are the two most important add-ons to request. They give you clear, documented information about what’s underground before it becomes your responsibility. Call Tri-County Water Services at 610-857-1740 or visit our septic and sewer services page to schedule a pre-purchase inspection across our Chester County, Lancaster County, Berks County, and Delaware County service area.

Frequently Asked Questions

Q: Does Pennsylvania require a septic inspection when buying a home?

Pennsylvania doesn’t have a statewide mandate requiring septic inspections for all real estate transactions. However, many townships in Chester and Lancaster Counties require an inspection or system certification as part of the transfer of ownership process. Your lender may also require it if the property is on a private septic system. Check with the specific municipality and ask your real estate agent before assuming it’s optional.

Q: What’s the difference between a home inspection and a sewer scope inspection?

A standard home inspection covers the visible and accessible components of a home: the roof, foundation, electrical, HVAC, and interior plumbing fixtures. The inspector can see that drains exist and run water to test basic flow, but cannot see what’s happening inside your underground sewer pipes. A sewer scope uses a camera to inspect the interior of the drain line, revealing root intrusion, pipe material, bellies, cracks, and blockages that no visual inspection can detect.

Q: How much does a sewer scope inspection cost in Chester County or Lancaster County, PA?

Sewer scope inspections in southeastern Pennsylvania typically run $200 to $400 depending on the provider and the length of the line. Given that residential sewer line repair involving excavation can cost $3,000 to $15,000 or more, the inspection cost is negligible compared to the risk of skipping it.

Q: What is Orangeburg pipe and how do I know if a home has it?

Orangeburg pipe is a compressed wood fiber and bitumen product used for sewer lines from the 1940s through the early 1970s. It degrades over time, losing its circular shape and eventually collapsing. A sewer scope inspection will show the deformed cross-section clearly. Homes built between 1945 and 1965 in PA are most likely to have it. If Orangeburg is confirmed, plan for full sewer lateral replacement, not just cleaning or patching.

Q: What is chester springs PA septic services and when do I need one before buying?

Chester Springs and surrounding areas in Chester County have a large number of properties on private septic systems rather than public sewer. A pre-purchase septic inspection is needed any time you’re buying a home on a private system. A qualified inspector will pump the tank, inspect all components, and perform a hydraulic load test to assess whether the system can handle normal household use. Budget $300 to $600 for the inspection itself, separate from any pumping fees.

Q: Can a home seller refuse to allow a sewer scope inspection?

A seller can refuse access, but your purchase contract should include an inspection contingency that gives you the right to conduct reasonable inspections within a set timeframe. If a seller refuses a sewer scope on a home with obvious risk factors (old pipe materials, mature trees, history of drain issues), that refusal itself is a red flag worth taking seriously. Most sellers who have nothing to hide will grant access.

Q: How long does a septic system last in Pennsylvania?

A conventional gravel drain field typically lasts 20-30 years with proper maintenance, though some well-maintained systems in ideal soil conditions exceed that. The septic tank itself, if concrete or fiberglass, can last 40+ years with regular pumping every 3-5 years. Alternative systems like mound systems or drip irrigation systems may have shorter component lifespans. Knowing the system’s age and pumping history before buying helps you assess remaining service life.

Q: What pipe material is considered a red flag in older PA homes?

Three pipe materials raise the most concern: Orangeburg (sewer laterals, requires replacement), polybutylene supply lines (brittle and prone to sudden failure, requires replacement), and lead service lines (health risk, replacement often required by PA municipalities). Galvanized steel supply lines are also a concern in very old homes due to corrosion and flow restriction, but are manageable if pressure is still adequate. A plumber can identify the pipe materials throughout the home during a pre-purchase inspection.

Q: Should I request a plumbing inspection separate from the home inspection when buying in Lancaster County?

Yes, especially for properties more than 30-40 years old or those on private wells and septic systems. A general home inspector checks surface-level plumbing but isn’t equipped to assess underground sewer lines, septic system components, or well pump condition. For older Lancaster County properties, add a sewer scope, a septic inspection, and a well pump assessment to your inspection plan. The combined cost is usually under $1,000 and can surface issues that save you tens of thousands.

Q: What should I ask the seller about the plumbing and septic system before making an offer?

Ask when the septic tank was last pumped and request any documentation. Ask if there have been any sewer backups, drain issues, or plumbing repairs in the last five years. Ask about the age of the water heater and any major plumbing replacements. Ask whether the municipal water service line has been tested or flagged for lead content. If the home is in a development with a grinder pump, ask for the most recent service record. Sellers aren’t always forthcoming, but their responses (and any evasiveness) are useful information.