Sump Pump Operation

A sump pump removes groundwater from under your home's foundation so it doesn't damage your basement. But where that water goes matters. City rules explain where you can — and can't — send it.

Why Your Sump Pump Runs

If your sump pump turns on a lot, it's usually because heavy rain has raised the groundwater level around your home. In some cases, groundwater can stay high for a while, and your pump may run almost nonstop.

Make sure the outside hose is connected and extends far enough from your house so the water doesn't just flow back into the pit.

Where You Cannot Discharge Sump Pump Water

You cannot send sump pump water into the sanitary sewer system. This is illegal under City Ordinance Section 53.023. Here's why it matters:

• The sanitary sewer isn't built to handle the extra water. Too much flow can cause sewer backups in basements.
• Extra water has to be treated at the City's wastewater treatment plant, which raises treatment costs for everyone.
• Letting the water flow onto a neighbor's property can cause disputes.
• Running a hose across a sidewalk creates a tripping hazard, and drilling through a curb to discharge water is also against the rules.

Where You Should Discharge Sump Pump Water

You have a few good options:

• Onto your lawn. Move the hose around your yard from time to time. This spreads the water out and helps prevent soggy or icy spots.
• Into the storm drain system. This is the best option where it's available. Many neighborhoods have a sump pump collection system with pipes running along the back property line. If your home is connected to one, use it. You're responsible for burying the line from your house to the system, but City Engineering may reimburse part of that cost.
• Toward the street, using a flat, collapsible hose across the sidewalk. This is allowed if there's no other option nearby.

If your neighborhood doesn't have a storm drain or collection system, the City may install one, especially in areas where sump pump water is causing problems. You can also petition the City to add a collection system, which can help move your neighborhood up the priority list.

Problems Caused by Discharging to the Street

Sending sump pump water straight into the street causes real problems:

• In summer, standing water can grow algae.
• In winter, that same water can freeze and create dangerous icy patches.
• Constant water on the street wears down the pavement, curb, and gutter faster, which raises maintenance costs for the City.