Storm Sewer
Definition and meaning of Storm Sewer in real estate.
Storm sewer is a drainage system designed to collect and carry away excess rainwater and snowmelt from streets, driveways, and residential properties.
In more detail
Unlike sanitary sewers, which carry wastewater from toilets and sinks to treatment plants, storm sewers route untreated runoff directly to local rivers, lakes, or retention basins. Homeowners typically direct gutter runoff and French drains toward the municipal storm sewer network. Proper drainage prevents localized flooding and soil erosion around a home's foundation.
Buyers should verify the location of nearby storm sewers, as poor drainage in the surrounding area can lead to basement flooding.
Key facts
| Category | Property Types & Construction |
|---|---|
| Managed by | Local municipality or county public works |
| Key function | Prevents street and property flooding by directing rainwater runoff |
| Watch out for | Illegal dumping of chemicals or wastewater into storm drains |
A buyer hired an inspector to check the grading of the backyard because the storm sewer inlet on the street was frequently blocked by debris.
Frequently asked questions
Can I connect my home gutters directly to the storm sewer?
In many municipalities, homeowners are allowed to route downspout runoff toward the street curb or storm drains, but tapping directly into the main underground pipe typically requires a permit.
Is a storm sewer different from a sanitary sewer?
Yes, a storm sewer handles rainwater runoff and leads directly to local waterways, whereas a sanitary sewer carries household wastewater to a water treatment facility.