Where Your Sump and Downspouts May Drain in Indianapolis
A waterproofing system is only half done once the water is in the pump. Where the pipe ends matters to the city's sewers, and to your own basement.
In Indianapolis, sump pumps should empty into the yard or a storm sewer, and downspouts should release water on the ground at least three feet from the house. Citizens Energy Group, the city's sewer utility, operates under rules approved by state regulators that bar clear water from the sanitary sewer.
Why does the sewer utility care about rainwater?
Sanitary sewers are sized for what comes out of sinks, tubs and toilets. Rain and groundwater piped into them use up that capacity fast. Citizens Energy Group says as few as six sump pumps can fill a sewer that serves two hundred homes. When that happens during a storm, sewage can overflow into rivers and streams, or back up into basements, including the basement of the house doing the pumping.
What counts as a clear water connection
- A sump pump discharge tied into a floor drain, laundry standpipe or the main sewer line.
- A downspout that disappears into the ground beside the house, which may be connected to the sanitary sewer.
- A cracked or root-damaged sewer lateral that lets groundwater seep in, often for days after rain.
- A missing or broken cleanout cap in the yard.
All four are named in the utility's Correct Connect brochure. When Citizens finds one, the homeowner gets a letter about the need for repair.
What a compliant setup looks like
The sump discharge leaves the house through the rim joist or wall, carries a check valve so water doesn't fall back into the pit, and ends in the yard far enough away to soak in rather than run back. A connection to a storm sewer is also acceptable to the utility. Downspouts end above ground, with an extension or splash block that puts water at least three feet from the foundation.
Older houses are where problems hide. With roughly 63,000 Indianapolis homes built before 1940 (U.S. Census), some may still have downspouts piped underground, the kind of connection the utility asks owners to correct.
How to check your own house
- Follow the sump pipe. If it turns down into a floor drain or joins a plumbing line, it needs rerouting.
- Walk around the house and look at every downspout. Any that vanish into the soil are worth asking about.
- Look for the cleanout, usually a short four-inch pipe near the foundation, and make sure the cap is on.
- Have questions? Citizens Energy Group's Correct Connect program can dye-test connections.
If rerouting is part of a larger fix, see sump pump and drain tile options or French drains for yard water, and compare the price ranges for Indianapolis basement work.
Tell us what your basement is doing
A puddle along one wall, a crack that weeps after rain, a sump pump that runs all spring, or a musty smell you can't place. Pick what fits and a local specialist who works in Indianapolis calls you back.