How do I know if I have a shared sewer?

Author: Ervin Stark Sr.  |  Last update: Sunday, September 28, 2025

A quick way to know if you have a shared sewer is to check your property deeds or ask your local water authority for records. Shared sewers can have implications on maintenance responsibilities and related expenses. Neighbors often share sewer lines, leading to potential disputes or joint resolutions.

How do I tell if I have a shared drain?

Identifying Signs of a Shared Drain

If your drains connect to a larger pipe that also collects wastewater from neighbouring properties, it's a shared system. The sound of water from neighbouring properties in your drain pipes can also suggest a shared system.

How do I know if public sewer is available?

Walk the front yard from the house to the street. If it is connected to a public sewer, there will be a clean out somewhere between the street and the house. You can also check with the city for the address and see if it is connected.

How do I know if I have combined sewer?

If you look along your road and see two lines of manholes then it's a good chance it's separate systems. If you only see one line, it's not certain that it's combined but likely. Don't rely on this but it's a starter for ten.

Can two houses share the same sewer line?

However, the sewer line portion between the main and the property line is typically considered a shared responsibility. This means that any issues with that portion of the line, such as blockages or damage, must be addressed by all parties involved.

Is Your Home at Risk? Discover the 4 Disturbing Signs of a Broken Sewer Pipe!

Does each house have its own sewer line?

All the drains in your home lead to one main sewer line, which goes into the municipal system or to your septic tank system. Knowing the location of your sewer line is crucial, especially when issues arise involving clogs, backups or breaks.

What is a shared sewer?

A common sewer line is a lateral house drain connection that is shared by more than one house. Unless very large buildings, or a great many houses, are connected the size of the shared sewer line is still 6″ in diameter. The material is typically extra heavy cast iron pipe.

How do I check my sewer line?

Go to the city office directly or call them to see if they can tell you where the sewer line is located. Usually, they can show you where the line goes from your home to the city's main line. If you are unable to reach the city, see if there is an interactive underground utility map of your area online.

Why has my sewer bill doubled?

The most common source of abnormally high water/sewer bills is leaky plumbing inside the property. More often than not, the source of that leak is a toilet. Did you know that a toilet constantly leaking at only ¼ gallon per minute can cost you as much as $350 over a 3-month billing cycle?

Are the sanitary sewer and storm sewer always combined?

It's important to note that stormwater sewer systems and sanitary sewer systems are often separate systems.

How much does it cost to get public sewer?

Hooking your sewer connection up to the city's water and sewer line costs anywhere from $500 to $20,000. The price varies greatly depending on local requirements. If you need to make any changes to your property to accommodate the hookup, there's a good chance that you're responsible for the cost of those improvements.

How often should I pump a septic tank?

Household septic tanks are typically pumped every three to five years. Alternative systems with electrical float switches, pumps, or mechanical components should be inspected more often, generally once a year. A service contract is important since alternative systems have mechanized parts.

What does it mean when a house has public sewer?

A sewer system is a shared, large-scale public utility system maintained by the local municipality's public works department. Sewer systems connect an entire community using city-owned pipes and sewer lines that lead to a centralized treatment facility.

Can a toilet and shower share the same drain?

Yes, It's Possible! In some plumbing setups, especially in older buildings or homes with limited space, a combined drain system might already exist. If the toilet and shower share the same drain, it's usually because of a “wet vent” arrangement.

How do I know if my property is connected to a sewer?

Deeds: Property deeds may detail sewer line agreements. Look for any references to shared infrastructure or easements. Sewer Maps: Local planning offices or utility companies keep sewer maps showing the layout of sewer lines.

Can I sue the city for sewer backup?

Tree roots can grow into and obstruct the sewer lines; or extraordinary amounts of rainfall can infiltrate the system and overload it. The courts have made it clear that the city is liable for sewer back-up damages if, and only if, the city's negligence causes damages.

What is a normal sewer bill?

Much like water bills, sewer bills are highly dependent on factors such as the number of occupants in your household and their water use habits. According to Angi.com, the average sewer bill for a household in the United States is $60 to $70 per month.

How can I lower my sewage bill?

Install Low-flow Showerheads and Faucets: Switching to low-flow showerheads and faucets can save you up to 50% of your water usage, which will reflect positively on your sewer bill. Collect Rainwater: Instead of using your hose to water your lawn or garden, consider investing in a rain barrel.

Why is my water meter reading high but no leak?

Sometimes, a high water bill with no visible leak points to other issues, like a faulty water meter or billing errors.

How many sewer lines does a house have?

Not in most homes. Ordinarily, you have one sewer line that is intended to primarily carry what's known as “black” water; water from the toilets into either the city sanitary sewer system or into your own septic tank.

How much does it cost to unclog a sewer line?

Plumber Drain Snaking Costs

Simple sink, shower, or toilet clogs – $100 to $250 per drain. Kitchen sink or laundry drain cleanout – $150 to $275 average cost. Main sewer line augering – $200 to $500 per cleaning. Extensive sewervideo inspection & repairs – $400 to $1,000+

Is a sewer line inspection necessary?

Sewer lines, the vital infrastructure for disposing of waste from your home to municipal or septic systems, can be aged, damaged, or clogged with tree roots. Considering a sewer line inspection is not just advisable; it's a crucial step that could save you thousands in unforeseen expenses.

How to check if a drain is shared?

Perhaps the best way to obtain this information is to contact your local water authority, which is also the organization that would be responsible for any problems that may arise with shared drains. Another way to check and see if you have a shared drain is to check with the sewage company that services your area.

What is the sewer line from the private owners property to the local main called?

The Private Sewer Lateral, also known as “Sewer Lateral” and “Service Lateral Line,” is a pipe that conveys a property's wastewater to the public sewer main in the street. Maintenance and repair of the full length of the Private Sewer Lateral is the responsibility of the property owner.

How does sewer insurance work?

Sewer line coverage may cover locating and repairing a line (including damaged seals), plus the costs of excavation, fusing, welding, and cutting. Coverage limits on a sewer line endorsement or “buried utility line endorsement,” as well as what's covered, will vary by insurer.

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