What we help with
Prefer a call back?
How it works
- Call (414) 234-5039 or request a call back.
- Tell us your town and what's happening.
- We connect you with an independent local contractor who serves your area.
- They inspect, quote and do the work; you deal with them directly.
Why Milwaukee-area basements get wet
Most basement water comes from the lot itself: soil that stays saturated after heavy rain or snowmelt, downspouts that empty next to the wall, a yard that slopes toward the house, or a sump discharge that cycles back. Saturated soil pushes on foundation walls (hydrostatic pressure), and water finds the joint between the wall and floor, cracks and pipe openings. A good inspection should show you which of these is happening in your home.
Leaks often show up when rain falls on frozen ground or snow melts fast, because the water can't soak in. In winter, a frozen or blocked discharge line can also leave a working sump pump with nowhere to send water.
What does it cost?
National cost guides put the average basement waterproofing job at about $5,247, with most homeowners paying $2,461 to $8,207 (Angi, 2026). Your price depends on the method, the size of the basement and what's causing the water. Our cost guide lists published ranges for drain tile, sump pumps, crack repair and more. Walls cracking horizontally or bowing in? See foundation repair.
Areas we cover
Common questions
Who will I be talking to?
Greater Milwaukee Waterproofing is a referral service. We'll help connect you with an independent local basement waterproofing contractor who serves your area. We don't do the work ourselves.
Does it cost anything to call?
No. Calling is free. Inspections, quotes and prices come from the contractor; get a written estimate before work starts.
Is there water in my basement right now? What should I do?
If water is near outlets, appliances or the electrical panel, stay out and don't touch anything electrical; contact your electric utility or an electrician. Otherwise, check that the sump pump is running and its discharge isn't blocked, then call us.
How do I check a contractor?
Ask for proof of insurance, a written scope and warranty terms in writing, and look up reviews yourself. Compare more than one quote for big jobs.
Does MMSD help pay for a sump pump?
It can. MMSD's Pipe Check program pays incentives for one- and two-family homes in its service area when an MMSD Approved Contractor does the work. The table (updated January 1, 2026) lists $3,800 for a foundation drain disconnection with a new sump pump and $300 to reroute a sump off the sanitary sewer. The incentive is taxable.
Do I have to disconnect my downspouts in Milwaukee?
In the combined-sewer area of older Milwaukee and Shorewood, MMSD rules require it at homes of four units or less where city code allows. MMSD says to check with your city or village first, so the water doesn't flood a neighbor or ice a sidewalk.