Sewer Scope Inspection in Montgomery, IL: How It Works

Do you need a sewer scope inspection before buying a home in Montgomery, IL?

For most resale homes, yes. A standard home inspection doesn’t look inside the buried pipe that runs from the house to the public main, and in Montgomery that service line is the homeowner’s responsibility, not the Village’s. Book a sewer scope inspection inside your inspection contingency so a bad result can turn into a repair, a credit, or a clean exit instead of a surprise after closing.

By Kealan O’Neil | October 18, 2026

The sewer line is the one big system in a house nobody sees. The first sign of trouble is usually water coming up through the basement floor drain.

In an r/homeowners thread from a first-time buyer, the top reply was blunt: “You definitely want a sewer line inspection, the part that goes from your home to the city connection is your responsibility.” An Illinois commenter in r/askaplumber added that “the rates are all over the place for sewer inspection,” so shop around.

Here is who owns the line in Montgomery, Oswego, and Yorkville, what a sewer scope inspection can and can’t tell you, and how to turn the results into a decision before your deadlines run out.

Who owns the sewer line in Montgomery, Oswego, and Yorkville

Start here, because ownership decides who pays. In all three towns, the answer is the same: the pipe from your foundation to the main is yours.

Montgomery

The Village of Montgomery’s sanitary sewer information page says its Public Works Water Division maintains the sanitary sewer mains inside Village limits. It also says sanitary service lines, which generally run from the foundation to the main, are the maintenance responsibility of the homeowner.

If you have a backup, Public Works will check the main. If the main is clear and the blockage is in your service line, the Village says you’ll need to hire a sewer contractor at your own expense.

Fox Metro rules apply in Montgomery and Oswego

Fox Metro Water Reclamation District treats wastewater for Montgomery, Oswego, Aurora, and nearby communities, and its code goes a step further. Section 20-56(d)(13) of the Fox Metro code says the property owner must keep the building sewer watertight, clean, repaired, and flowing, including any portion that lies in the public right-of-way or easement.

In other words, the pipe under the parkway can still be your bill. Fox Metro is not responsible for anything upstream of the wye or tee where your line meets the public sewer.

In Oswego, the Village bills a sewer maintenance charge for the physical sewer lines it maintains, and Fox Metro sends a separate bill for treatment. My post on water and sewer costs for Yorkville, Oswego, and Montgomery buyers walks through those bills.

Yorkville

Yorkville’s City Code (Ord. 2020-38) says the owner and occupant are jointly and severally responsible for maintaining the building service sewer up to the point where it connects to the City’s main. The Yorkville-Bristol Sanitary District treats the wastewater and owns its large interceptor sewers, but not your house connection.

Unincorporated areas like Boulder Hill

Outside village limits in Aurora and Oswego Townships, Fox Metro owns the mains itself. Your service line is still your responsibility.

Fox Metro’s sewer backup help page says tree roots are the number one cause of sewer backups, “especially in Boulder Hill.” If you’re looking at an established street with mature trees, put the sewer scope inspection near the top of your list.

What a sewer scope inspection shows, and what it doesn’t

A sewer scope inspection runs a camera through a cleanout and down the building sewer toward the main. You get a video of the inside of the pipe and a short report.

Your general home inspection won’t do this. Illinois standards of practice (68 Ill. Adm. Code 1410.200) define “inspect” as visually examining readily accessible systems, and the plumbing section covers interior piping, water heating, and sumps. A pipe buried under the lawn isn’t readily accessible, so a sewer scope inspection is a separate service you add.

What to look for in the video:

• Roots pushing through joints.
• Cracks or breaks in older pipe.
• Offsets, where two sections no longer line up.
• Bellies, low spots where water and waste sit.
• Clear water connections, such as a sump pump or footing drain tied into the sanitary line.

That last one matters more than buyers expect. Fox Metro’s code bars downspouts, footing drains, and sump pumps from connecting to the sanitary sewer, and Yorkville’s code prohibits connecting roof or foundation drainage to it too. If your inspector finds one, plan on correcting it.

Access matters too. If there’s no outdoor cleanout, Fox Metro says the line can usually be reached from a basement cleanout, and on a slab home a toilet may have to come off.

Here’s a step most buyers miss after a sewer scope inspection: Fox Metro says that if a company televises your service, you can ask its Engineering Department to have staff review the video and give recommendations. That’s a free second opinion from the district that writes the repair rules.

How to turn sewer scope inspection results into a decision

A sewer scope inspection only helps if you use the results before your inspection rights expire. My guide to the inspection contingency in Illinois explains how that window works. Your attorney should put any request in writing during that period.

Know how repairs work in the Fox Metro area

Repairs here follow permit rules:

• Permit first. Fox Metro requires a repair permit before any dig, lining, or other work on a building sewer, and repair permits expire 30 days after they’re issued.
• Bonded contractor in the right-of-way. An owner may repair a building sewer only on their own parcel. Work in the public right-of-way must be done by a contractor with a license and permit bond on file with the district.
• Inspection before backfill. Fox Metro inspects the repair before the trench is closed.
• Video for lining. Before a liner goes in, the contractor sends the district a video of the pipe for review.

Fox Metro also recommends getting two to three price quotes for any repair. Use those quotes, not a guess, when you ask for a credit.

Your four options

• Clean and monitor. Light roots may only need rodding. Ask the plumber whether the pipe itself is sound.
• Seller repairs before closing. Ask for the Fox Metro or Village permit and proof the inspection passed, not just a receipt.
• A credit. You control the contractor and timing after closing, based on written quotes. Confirm with your lender how much credit the loan allows.
• Walk away. If the line is broken, the seller won’t help, and you’re still inside your contingency, ending the deal may be the right call.

Check the seller’s disclosure and history

Statement 14 of the Illinois Residential Real Property Disclosure Report (765 ILCS 77/35) asks whether the seller is aware of material defects in the septic, sanitary sewer, or other disposal system. It’s based on actual knowledge, so a seller who never had a backup can honestly answer “no.” My post on the Illinois seller disclosure report covers how to read the rest of the form.

Ask in writing about past backups, routine rodding, and any repair, along with the permit for it. Because Fox Metro requires a permit for building sewer repairs, a seller who fixed the line should have paperwork.

Ask about overhead sewers and insurance

If the home has a history of storm backups, look at Fox Metro’s Sanitary Sewer Overhead Assistance Program. It offers cost-share reimbursement of up to $5,000 toward an overhead sewer. Fox Metro says most service communities offer a 50% cost share in incorporated areas, and Fox Metro reimburses up to 15% of the cost after closeout, while unincorporated owners in places like Boulder Hill can get up to 65%, capped at $5,000.

You must own the home and have an approved permit before work starts, and finished retrofits aren’t eligible, so you’d apply after closing.

Then call your insurance agent. The Illinois Department of Insurance lists sewer backup and sump pump failure among typical homeowners policy exclusions, with coverage available by endorsement for an extra premium. Since January 1, 2025, Illinois law (215 ILCS 5/143.21d) requires insurers to give applicants information on that coverage, its limits, and its cost, so ask for the quote while you shop.

If you’re the seller

A pre-listing sewer scope inspection is optional, but it lets you fix a problem on your schedule or price it in. If you already know about a defect, talk with your attorney about how to disclose it, and keep every permit and invoice for the buyer.

What the top real estate agents in Montgomery, IL do before the inspection deadline

If you’re comparing agents, ask for their process. Here’s the order I follow on an older home:

1. Confirm who serves the address. Village of Montgomery, Oswego, Yorkville, or an unincorporated Fox Metro area like Boulder Hill.
2. Ask the seller in writing. Backups, rodding history, past repairs and permits, and where the sump pump discharges.
3. Book the sewer scope inspection with the home inspection. Confirm cleanout access ahead of time.
4. Get the full sewer scope inspection video, not just the summary. You’ll need it for quotes and review.
5. Send the video for a second look. In the Fox Metro area, ask its Engineering Department to review it.
6. Collect two to three repair quotes. Use bonded contractors for any work in the right-of-way.
7. Decide before your deadline. Repair, credit, or walk, with your attorney putting it in writing.

Questions Montgomery buyers ask about sewer scope inspections

Get the sewer line answer before your inspection deadline

The sewer line is cheap to look at and expensive to ignore. A sewer scope inspection during your contingency gives you facts to negotiate with, instead of a surprise the first time it rains hard.

If you’re buying or selling in Montgomery, Oswego, Yorkville, or anywhere in Chicago’s Western Suburbs, I’ll help you line up the sewer scope inspection, read the results with your inspector and attorney, and push for the repair, the credit, or the exit that fits. Learn more about the area on my Montgomery, IL real estate page. Call or text Kealan at 630-425-8815.

About Kealan O’Neil
Kealan O’Neil is the Designated Managing Broker and founder of O’Neil Property Group, an independent real estate brokerage based in Yorkville, Illinois. He and his team help buyers and sellers in Yorkville, Oswego, Montgomery, and the surrounding Kendall and Kane County communities, and he owns and manages a local rental portfolio, so he approaches every decision as both a broker and an investor. Call or text Kealan at 630-425-8815.

This post is general information about real estate in the Fox Valley, not legal, tax, or financial advice. Real estate laws, tax rules, and municipal ordinances change, and how they apply depends on your specific situation. Talk with a licensed attorney, CPA, or lender before making decisions about a purchase, sale, or tax matter. O’Neil Property Group is a licensed Illinois real estate brokerage.