Sanitary Sewer
Definition and meaning of Sanitary Sewer in real estate.
A sanitary sewer is an underground system of pipes designed specifically to transport wastewater from domestic, commercial, and industrial plumbing fixtures to a treatment facility. Unlike storm sewers, which collect rainwater runoff, sanitary sewers only handle water from toilets, sinks, showers, and appliances.
In more detail
Proper sanitary sewer systems are essential for public health, preventing pathogens and pollutants from contaminating soil and local water sources. Homeowners are responsible for maintaining the lateral sewer line, which connects their property's plumbing to the municipal main sewer line in the street. When purchasing an older home, it is wise to order a sewer scope inspection to check this line for cracks, root intrusions, or collapses.
Repairing or replacing a damaged lateral sewer line can cost thousands of dollars, making it a critical point in real estate negotiations. Properties that do not connect to a municipal sewer system must use a private septic system to process wastewater.
Key facts
| Category | Property Types & Construction |
|---|---|
| Who maintains | Homeowner owns the lateral line, city maintains the main line |
| Watch out for | Tree root intrusion and line collapses in older homes |
| Applies to | Urban and suburban properties with public utilities |
Before buying a fifty-year-old home, the buyer hires a plumber to run a camera through the sanitary sewer line, discovering tree roots blocking the pipe and negotiating a repair credit from the seller.
Frequently asked questions
What is the difference between a sanitary sewer and a storm sewer?
A sanitary sewer carries wastewater from sinks, toilets, and drains to a treatment plant, while a storm sewer collects rain runoff from streets and roofs and discharges it directly into local waterways.
Is a sewer inspection required when buying a house?
While not typically required by mortgage lenders, a sewer scope inspection is highly recommended for older homes to identify hidden, expensive plumbing issues.