4.6 
3.1k+ *The Angi rating for Sump Pump Installation companies in O Fallon, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Sump Pump Installation needs.
*The HomeAdvisor rating for Sump Pump Installation companies in O Fallon, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Sump Pump Installation needs.
Last update on May 19, 2025
Serving O Fallon, MO and surrounding areas
Approved
In business since 1974
Free estimates
Warranties offered
"Perma Jack was very responsive and willing to work with the owner of the project to complete a successful waterproofing drainage system. Perma Jack also worked in a very professional manner. I would definitely recommend this company."
+197
Serving O Fallon, MO and surrounding areas
Approved
In business since 2009
Warranties offered
Credit card accepted
"Wonderful, the plumber had everything he needed. One and done."
+2
Serving O Fallon, MO and surrounding areas
Approved
In business since 2017
Free estimates
Emergency services offered
"The company had a person in the area and sent him to give a a diagnosis of the problem with our sump pump and an estimate of the cost to fix it. This was 2 days ahead of the scheduled appointment. However we got a cheaper estimate from a company we have done business with before."
+7
Serving O Fallon, MO and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 1979
Free estimates
Emergency services offered
"we had new gas-fired furnace and air conditioning system installed"
+18
Serving O Fallon, MO and surrounding areas
Approved
In business since 2019
Free estimates
Emergency services offered
"Awesome. Showed up on time. Courteous. Clean. Of the several company reps that I spoke with Austine Ambassador Plumbing) gave me the most confidence. I will definitely work with them again!"
Serving O Fallon, MO and surrounding areas
Approved (Corporate)
In business since 1935
Free estimates
Emergency services offered
When you need an emergency plumber in St. Louis, or a drain cleaner, call Roto-Rooter Plumbing & Water Cleanup. Your fast & reliable plumber can fix any plumbing problem, including sump pumps, toilet repair, faucet repair, faucet replacement, garbage disposals, water heaters, bathtubs, showers, and outside faucets. Roto-Rooter is best known for drain cleaning & sewer cleaning. We fix drain clogs, clogged toilets or sinks, blockage of main sewer lines, slow draining shower and bathtub drains, sewer lines and leaking or burst pipes. We also specialize in water damage restoration & water cleanup services. We can fix and clean up your flooded basement too. Roto-Rooter is a 24-hour plumber near you and provides emergency service.
+1
Serving O Fallon, MO and surrounding areas
Approved
Super Service Award Winner
In business since 2022
Free estimates
Warranties offered
"This was one of the best experiences I have had working with a professional home service of any kind. They were prompt, kept me informed at every step, and did exactly what they said they would do, and did it well. I would recommend them for any plumbing issues."
Serving O Fallon, MO and surrounding areas
Approved
Super Service Award Winner
In business since 2023
Emergency services offered
Warranties offered
"Very satisfied with product installation"
+9
Serving O Fallon, MO and surrounding areas
Approved
In business since 2000
Free estimates
Emergency services offered
"I had a 15 year old system that was nearing the end of its life span. During the quote process, they gave me options based on what was hoping to spend. The quote they provided for a higher efficiency system made the decision pretty easy. The install team was extremely professional and I couldnâ t be happier with my new HVAC system."
Serving O Fallon, MO and surrounding areas
Approved
In business since 2006
Free estimates
Warranties offered
"This company doesn't deal with the specific problem and equipment that I need help with. The sewage ejector sump pump in my basement needs to be repaired/replaced."
+1
From average costs to expert advice, get all the answers you need to get your job done.
Discover how much sump pump installation costs in St. Louis, MO, including average prices, key cost factors, and tips to save on your project.
Discover how much sump pump installation costs, including average prices, key cost factors, and tips to save on your basement waterproofing project.
Sump pump replacement costs depend on the type of unit you have and the cost of labor, which varies by region. Read on to find out more about what to expect.
Licensed plumbers and basement waterproofers specialize in sump pump installations. Keep reading to learn more about who installs sump pumps near you.
Learn how to hire a qualified sump pump installer with tips on finding pros, questions to ask, and what to expect during the installation process.
If something seems off with your sump pump, follow this guide to learn how to check if your sump pump is working (and what to do if it’s not).
