Rules

Who Owns the Sewer Lateral in Houston? Where Your Line Ends

By Houston Sewer Repair · September 11, 2026 · 5 min read

Every sewer problem starts with the same question: whose pipe is it? Get that wrong in one direction and you pay for a repair the city should have made. Get it wrong in the other and you wait two weeks for a 311 crew to come out and tell you the break is on your side. Here is how it works in Houston and the suburbs around it.

The pieces

• The building drain runs under your slab from the fixtures to the outside wall. Yours.
• The lateral (also called the service line or the house sewer) runs from the outside wall across your yard to the main. Yours, up to the property line.
• The tap is the fitting where the lateral joins the main, usually under the street or the easement.
• The main is the big pipe under the street that serves the block. The utility's.

In the City of Houston, the homeowner owns and maintains the lateral on private property, and Houston Public Works maintains the main and the connection within the public right-of-way — the street and the strip between the sidewalk and the curb. The utility's own material describes it the same way, and 311 will tell you so when you call. If you want the source, Houston Public Works publishes its wastewater service information, and 311 logs the request.

This is the arrangement in most of Texas, and it is more generous to the homeowner than some cities, where the owner is responsible all the way to the main under the street. The property line is your edge. Know where it is: on most Houston lots it is not the sidewalk, it is a few feet behind it.

The suburbs and the MUDs

Outside the city limits — and inside a lot of what feels like Houston, including most of Katy, Cypress, Spring, parts of Pearland and much of Fort Bend County — sewer service comes from a Municipal Utility District. Each MUD owns its mains and lift stations and contracts an operator to run them. The rule is generally the same: homeowner to the property line, district beyond it. The operator's name and number are on your water bill. Sugar Land, Pearland, Bellaire, West University and Pasadena have their own city utility departments with the same split.

If you are not sure which you have, look at the water bill. City of Houston bills come from the City; a MUD bill names the district by number and the operating company.

How to tell whose side the problem is on

It is probably the main if:

• Every fixture in the house backed up during a heavy rain and drained on its own when the rain stopped. That is surcharge — the main was full — and it happens across Houston in any big storm. Your lateral was fine.
• Neighbors on the same street had the same thing at the same time.
• The camera runs clean all the way past your property line and stops in the street.

It is probably yours if:

• It backs up on a dry day.
• One house on the street has the problem.
• The camera finds a break, an offset or roots between the house and the property line, which is where nearly all of them are.

The camera settles it. A sewer camera inspection has a footage counter and a locator; if the problem is at 62 feet and your property line is at 48, you call 311 with the footage and the location marked, and you do not pay for the repair. We have stopped jobs at that point and will again; it is the only honest thing to do with the information.

What the city will and will not do

Houston Public Works will clear or repair a blockage in the main and, in most cases, at the tap in the right-of-way. It will not clear your lateral, and it will not run a camera down your line for you. A 311 request for a "sewer backup" gets a crew to check the main; if the main is flowing, they will tell you it is a private-side problem and leave. Getting the camera done first saves that round trip.

If the problem is at the tap and the city needs to dig in the street, that is their permit, their traffic control and their schedule. It can take a while. The sewer line replacement page describes where our work stops and theirs starts on a replacement.

The one thing you own that you might not know about

Some older Houston homes, especially inside the Loop, have a lateral that was extended across a neighbor's lot or shares a run with the house next door — common on lots that were split in the 1940s and 50s. The camera finds these because the footage does not match the distance to the street. If you have one, the repair may need a neighbor's permission and an easement conversation before a shovel goes in. Rare, but worth knowing before a closing.

The short version

1. You own it to the property line. The city or the MUD owns it from there.
2. Storm-only backups are usually the main. Dry-day backups are usually you.
3. A camera inspection with a locate settles it for $250–$500, and if it shows the problem past your line, call 311 or your MUD operator with the footage and keep your money.
4. Whatever side it is on, sewer work in Texas has to be done under a Responsible Master Plumber's license, and a repair on your side needs a City of Houston plumbing permit. The about page explains what to ask any contractor for.