Iowa City · Coralville · North Liberty · Tiffin · Solon
Water in your basement? We connect you with a local waterproofing contractor who can find where it’s coming from and fix it with the least work that will actually hold.
Most wet basements in Iowa City and the surrounding towns come down to a short list of causes. Here are the ones that come up most, and what to check before you call anyone.
What it usually means
Usually groundwater pressure at the footing taking the weakest seam in the basement. After spring thaw it is common on Iowa clay. Surface water and plumbing still need to be ruled out.
Check first
Gutters, downspouts and grade first. Then note whether it follows rain or snowmelt, and whether one corner or the whole perimeter gets wet. Photos of the joint help.
Interior drain systems →What it usually means
That white crust is mineral salt from moisture moving through block or concrete. Block cores and mortar can hold and carry water, so the stain you see may sit well below where it got in.
Check first
How high the staining goes, whether the lower mortar is damp and whether it shows up after rain. Don’t paint over it. You’ll lose the evidence.
Wall and leak repair →What it usually means
Pressure under the slab finding a shrinkage crack or control joint. It can look like a plumbing leak if you only see a puddle in the middle of the room.
Check first
Does it follow rain or thaw? Is a sump running nearby? Warm water that has nothing to do with the weather is a plumbing question first.
Crack repair →What it usually means
It can be the float switch, the discharge line, the pit or simply more water than the system was built for. A pump that fails to start during a storm is the one that costs you.
Check first
Power to the outlet, where the discharge exits the house and whether water is also showing at the walls. Never reach into standing water to test a float.
Sump pump service →What it usually means
Humidity, condensation, hidden seepage or damp stored boxes can all smell the same. A dry-looking floor doesn’t mean the moisture is gone.
Check first
Finished or unfinished, basement or crawl space, plumbing drips and cardboard sitting on the slab. Note when the smell gets worse.
Moisture control →What it usually means
Some cracks are just seepage paths. Stair-step, horizontal or growing cracks can mean the wall is moving, and that needs a structural look before anyone quotes a drain.
Check first
Photograph and measure it, then compare in a month. Bowing, shifting or a crack that grows deserves a qualified structural professional.
When it’s the wall →Most of the Iowa City area sits on clay-heavy soil that holds water instead of draining it. After a hard rain or a fast snowmelt, the soil around your foundation saturates and pushes water against the walls and up from under the slab. Freeze-thaw cycles open small cracks every winter, and gutters that empty at the foundation make it worse.
The housing mix matters too. Older homes near campus and on the east side often have stone, clay tile or hollow-block foundations. Newer neighborhoods in North Liberty and Tiffin have settling backfill and builder-grade sump pits. Homes along the Iowa River corridor can sit on a high water table. Each calls for a slightly different fix.
Interior drain and sump systems for wet basements, sized to the water you actually have.
Learn more →Interior and exterior French drains with real slope, clean stone and a proper outlet.
Learn more →Drainage, vapor barrier and humidity control for damp crawl spaces under your home.
Learn more →New pumps, replacements, battery backup and discharge fixes that hold up in a storm.
Learn more →Cracks, wall seepage and joint leaks diagnosed first and repaired right, with no extra system.
Learn more →Dig out the wall, seal it, add a drainage board and new drain tile. The thorough fix, with the most disruption.
Learn more →Trace the water to its source and get a ranked plan before you pay for a fix.
Learn more →Tell us what you’re seeing and we’ll point you to the right kind of contractor.
Get matched with a local pro →Each town in the metro has its own housing, soil and water problems, so each gets its own page.
ZIP codes we get asked about most: 52240, 52245, 52246 (Iowa City), 52241 (Coralville), 52317 (North Liberty), 52340 (Tiffin) and 52333 (Solon).
A rough idea before you talk to anyone. These are ballpark ranges, not quotes. Access, finished walls and how much perimeter is being drained all change the number.
$400 – $1,200
Depends on crack length, wall thickness and access.
$600 – $1,800
Pump, check valve and labor. Higher end for quality submersibles and discharge fixes.
$5,500 – $12,000+
Price scales with linear feet of wall and whether the basement is finished.
You send a short request with your ZIP code and what you are seeing in the basement. We connect you with a local waterproofing contractor who works in your town. They look at it and give you a quote. There is no cost to request a match and no obligation to hire anyone.
No. We are a referral service. The work is done by independent local contractors, who set their own prices and stand behind their own work. Our job is to get you in front of the right person quickly and to help you know what to ask.
It runs from a few hundred dollars for a single crack or a sump pump swap to several thousand for a full interior drain and sump system. What moves the number is how much wall is being drained, whether the basement is finished and how easy the access is. Our pricing page has ballpark ranges, but a real price needs a contractor to look at your basement.
Usually not for slow seepage or groundwater. Most standard policies exclude it. Sudden events like a burst pipe are treated differently, and sump pump failure or backup is often a separate endorsement you have to add. Read your policy or ask your agent. We are not insurance advisers.
Not always. Exterior work means excavating down to the footing, which makes sense on a new build or an open lot but is expensive and disruptive on most existing Iowa City homes. Interior drainage handles the same groundwater from the inside without digging up your yard, patio or landscaping.
Mild dampness, yes. Extend your downspouts, fix the grade so it slopes away from the house and run a dehumidifier. If water comes in after storms, walls are bowing or a finished basement is getting damaged, get a pro out. Paint-on sealers over a wall with water pushing behind it tend to blister and peel, and they hide the evidence of where the water is coming from.
Iowa City, Coralville, North Liberty, Tiffin, University Heights and Solon. If your town is not on the list, send a request anyway and we will tell you straight whether we can match you.
Send your ZIP code and a few details. We’ll match you with a local waterproofing contractor who can look at it and give you a quote. It’s free to request, with no obligation.
Serving Iowa City, Coralville, North Liberty, Tiffin, University Heights and Solon.