Plumbers for backwater valves, sump pumps and drains.
Milwaukee's basements have been tested by two very different storms. On July 22, 2010, Mitchell Field recorded 5.61 inches of rain in a day, and Milwaukee County received a Major Disaster declaration. On August 9 into August 10, 2025, a gauge at James Madison High School in northwest Milwaukee read 14.55 inches, confirmed as a new Wisconsin 24-hour record, and flash flooding reached Wauwatosa, West Allis, Menomonee Falls and New Berlin. For you, that means the first job before hiring is working out where the water comes from. MMSD says that if neighbours have backups at the same time as you, the public sewer is likely full and pushing water in through your sanitary lateral. If they are not affected, your lateral is likely blocked. A sump pump or waterproofing will not fix a sewer backup, so ask any contractor to explain which problem they are treating, what permit the work needs, and what the written quote covers. Ask about MMSD's Pipe Check programme too.
Sources: National Weather Service Milwaukee/Sullivan (source, opens in a new tab), National Weather Service Milwaukee/Sullivan (source, opens in a new tab)
Foundation crack repair and weeping tile sit alongside sump pump work at this Waukesha firm, operating since 1998. A lifetime transferable warranty applies, and it serves Milwaukee, West Allis and Brookfield.
This plumbing company offers emergency service, and it also installs and repairs sump pumps and handles drain cleaning. Its towns include Racine and Kenosha.
Drain tile testing is this firm's focus, checking whether a basement has drain tile and how well it flows. It works on weeping tile and flooded basements and serves Racine and Waukesha on weekdays.
Basement waterproofing and foundation work in Racine County is this masonry firm's focus, with service extending into Kenosha County. It has operated since 2004 and is open Monday through Saturday.
Based in Wauwatosa, this plumber handles sump pumps and drain cleaning for homes and businesses in Milwaukee, Waukesha and Wauwatosa, on weekdays only.
Sump pump replacement and drain stoppage work sit alongside video drain inspections at this plumber, which also fabricates pipe pieces for outdated sizes. It serves West Allis and Greenfield.
Same day service is available from this Milwaukee plumber, which handles sump pumps, sewer line repair and drain cleaning. It gives a one-year warranty and serves Oak Creek and Mequon.
Muskego-based and locally owned, this plumber also works on battery backup sump pumps and handles drain cleaning for Muskego and the greater Milwaukee area.
Weeping tile and sump pumps are among the jobs at this West Allis basement company, which offers free estimates on weekdays and serves Milwaukee too.
Veteran-owned and independent, this plumber handles sump pumps and drain cleaning, with service in Milwaukee and Glendale on weekdays.
Operating since 1939, this company also handles heating, cooling and electrical work, with sump pumps and drain cleaning in its plumbing list. It runs day and night, and financing is offered.
Waterproofing for masonry is this firm's work, and it has operated since 1978. A two-year warranty applies, free estimates come with its work, and its towns include Chicago, Evanston and Brookfield.
Also serves Chicago
Dating to 1929, the family-owned company handles sump pumps and drain cleaning alongside electrical, plumbing and heating work. It also offers backup power and emergency service, and financing is available.
The firm works with Lennox, Carrier and Mitsubishi systems and handles sump pumps and drain cleaning. It is open round the clock and offers free quotes in Wauwatosa, Mequon and New Berlin.
Kohler and Rheem products are among what this Menomonee Falls plumber works with, and it covers sump pumps. A 12-year warranty applies, and it serves Waukesha and Brookfield.
Backwater valves, sump pumps and drain cleaning are among its jobs at this Brookfield plumber, which works with Kohler, Rheem and Ruud equipment. Free estimates are given, and it offers emergency service.
Drain tile work and foundation crack repair are among its jobs at this 1985 company, which is open seven days a week from early morning to late evening. Free consultations are given.
Sewer backup prevention, sump pumps and drain cleaning make up its work, and it has operated since 1992. Emergency service runs at all hours, every day.
Battery backup sump pumps and weeping tile sit alongside foundation crack repair at this waterproofing firm. A lifetime warranty applies, and it serves Cudahy, Kenosha and Brookfield.
Founded in 1961 and family-owned, the business covers sump pumps and drain cleaning. It serves West Allis, Brookfield, New Berlin and Mequon.
Waterproofing service whose website lists weeping tile, basement waterproofing and foundation crack repair.
Heating, cooling and plumbing contractor in New Berlin, Wisconsin, offering furnace and air conditioning repair around the clock, plus standby generator and panel upgrade work for home backup power.
Plumber whose website lists sump pumps and sewer line repair.
Family-owned, the Caledonia business does sump pump and drain cleaning work and serves Waterford, Somers and Union Grove. Financing is available, and its towns include Racine, Kenosha and Sturtevant.
Also serves Madison
Since 1959, the company has handled sump pumps and drain cleaning and works with Daikin equipment. Service runs around the clock, and it covers Brookfield, Oak Creek and Mequon.
Since 2011, the Racine plumber has offered sump pump services, sewer line repair and drain cleaning. Its towns include Kenosha, Waukesha and Milwaukee.
Open 24 hours, every day, the firm has operated since 2007 and handles sump pumps, sewer line repair and drain cleaning. It gives free estimates and serves Menomonee Falls and Racine.
HVAC contractor whose website lists sump pumps, furnace repairs and installs, boiler service and heat pumps.
Basement waterproofing, sump pumps and foundation crack repair make up its work, and a lifetime warranty applies. It is open evenings and Saturdays, closed Sundays, and serves Waukesha, Brookfield and Oak Creek.
Foundation whose website lists sump pumps, French drains, weeping tile and basement waterproofing.
Foundation whose website lists sump pumps, weeping tile and basement waterproofing.
Landscaper whose website lists sump pumps, snow removal and weeping tile.
Bottled water supplier whose website lists sump pumps and battery backup sump pumps.
Foundation whose website lists sump pumps, weeping tile, basement waterproofing and foundation crack repair.
Waterproofing service whose website lists sump pumps, weeping tile, basement waterproofing and flooded basements.
Not yet verified. We checked that each one’s own website offers this work, but we haven’t contacted them yet. How a business gets listed
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On the evening of August 9 into early August 10, 2025, between 10 and 13 inches of rain fell in several hours over eastern Waukesha County and northern and western Milwaukee County. Flash flooding hit Wauwatosa, West Allis, Menomonee Falls, Elm Grove and New Berlin, and the Milwaukee River reached record levels in Milwaukee.
National Weather Service Milwaukee/Sullivan (source, opens in a new tab)
Ask which permits the job needs and who will get them; your municipal building department can tell you before work starts.
Get written quotes from at least three contractors for the same work, and check references from recent clients.
Put it in a written contract: the work, price, deposit, start and finish dates, warranty, permits and clean-up. Paying cash to skip it leaves you no recourse.
Ask your neighbours. MMSD says that if they have backups at the same time as you, the public sewer is likely full and pushing water in through your sanitary lateral. If they are not affected, your lateral is likely blocked. Knowing which applies helps you tell a contractor what you need. Milwaukee Metropolitan Sewerage District (MMSD) (source, opens in a new tab)
MMSD says to call your city or village and submit a wet basement form when neighbours are affected at the same time. Do this before paying for repairs, because the problem may sit in the public sewer rather than in your house plumbing or foundation. Milwaukee Metropolitan Sewerage District (MMSD) (source, opens in a new tab)
A good quote names the problem being fixed, the equipment to be installed, the work area, who pulls any permit, what is excluded, the warranty terms, and the payment schedule. Get at least two quotes and compare them line by line, not only by the total.
Yes. MMSD offers a Pipe Check programme for individual homeowners who have sewer water backing up into their basement, or who want to remove other sources of clear water going into the sanitary sewer system. Ask MMSD whether your home qualifies before you hire anyone. Milwaukee Metropolitan Sewerage District (MMSD) (source, opens in a new tab)