*The Angi rating for Water Softener Service companies in Saint John, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Water Softener Service needs.
*The HomeAdvisor rating for Water Softener Service companies in Saint John, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Water Softener Service needs.
Last update on June 29, 2026
Serving Saint John, MO and surrounding areas
Approved (Corporate)
In business since 2020
Free estimates
Warranties offered
"They came out right away and gave me an estimate and they were able to install my water softener within the week."
+44
Serving Saint John, MO and surrounding areas
Approved
In business since 1985
Free estimates
Warranties offered
"I purchased an electric tankless and pre-filter/softener directly from the manufacturer and started hunting for a plumber to install it. Now most all plumbers recommended against a tankless hot water heater, and Maplewood wasn't really any different in this regard. BUT, they listened to us, didn't treat us like idiots, and obliged us in our foolishness and they were really awesome. They did the job quickly and without a mess. Also, WE LOVE OUR NEW TANKLESS HOT WATER HEATER! I looked at our electric bill after 2 months (March-April) of using our Stiebel-Eltron E-tankless whole-house water heater unit, and the kW usage actually DECREASED from one year ago for those same two months. That’s right, there was no increase in our electric bill. As expected, our gas usage decreased. My wife was very worried because she often ended up talking to the plumber issuing the dire warnings and predictions about our silly misguided endeavor to get a tankless unit. Now, she couldn’t be happier. Tandem back-to-back showers all day long, if we wanted. Never ending hot water! Thank you Maplewood Plumbing for helping us!"
+7
Serving Saint John, MO and surrounding areas
Approved
In business since 2017
Free estimates
Emergency services offered
"Noah did a wonderful job explaining what was wrong with my water heater. I appreciated him reviewing all about the new water heater. A very pleasant experience."
+7
Serving Saint John, MO and surrounding areas
Approved
In business since 2000
Free estimates
Emergency services offered
Anton's has been in business for 43 years and maintains an A+ rating with the BBB. We have the highest Google rating in St. Louis. We offer manufacture rebates, and flexible financing for all your home projects! We currently employ 72 team members who receive customer service training twice per week. Our service technicians have been professionally trained on our 6 step Anton's service system to ensure our customers receive the same GREAT service at a GREAT price each and every visit!! We provide upfront pricing and don't complete any repairs with out approval. We offer FREE Lifetime Maintenance to Veterans and First Responders through our Anton's Heroes Program + Senior Discount- $10 off a service or $100 off complete new system
Serving Saint John, MO and surrounding areas
Approved
In business since 2000
Credit card accepted
Offers commercial services
You can expect our technicians to provide timely service, a clear explanation of the work to be performed, and upfront pricing. We focus on providing industry best customer service from start to finish. Our technicians are insured, licensed and bonded.
+1
Serving Saint John, MO and surrounding areas
Approved
In business since 2000
Emergency services offered
Warranties offered
Hoffmann Brothers is the leading home services provider in the St. Louis area, proudly serving homeowners in the St. Louis metro for over 40 years.
+1
Serving Saint John, MO and surrounding areas
In business since 1995
Free estimates
Emergency services offered
"Everett is a very experienced and knowledgeable water guy. My water reeked of chlorine and was very hard (within three weeks of living here, my dog's water bowl had a crust of mineral hardness in bottom of bowl, so I knew the water was very hard). He tested my water and showed me the levels of chlorine (more than a public pool requires) and the hardness grains were approx. 14. I purchased a water softener and conditioner combo unit, and also a reverse osmosis system so as to have safe water for drinking, cooking and bathing, and to save my appliances from the hard water. I was very happy with his workmanship and the products installed. Taking a shower was a delight, no more nasty chlorine smell! Everett even did a few extra items for me, totally unrelated to the install, and I greatly appreciated his kindness and help! I would highly recommend this company for all your water needs! The price was right too! Pam"
+8
Serving Saint John, MO and surrounding areas
In business since 1929
Emergency services offered
"a water pipe that goes from inside my house to the outside spicket burst. Showed up quick, professional and efficient. So happy with the work."
Serving Saint John, MO and surrounding areas
In business since 1990
Free estimates
Emergency services offered
"Mayo Plumbing is different from all the rest. They use data and research to inform their work. Before calling Mayo I had two different plumbers look at our new (very old) house. The first said, "St. Louis has hard water - you NEED a water softener." The second said, "St. Louis has great water - you DO NOT need a water softener." Mayo said, "What did the test results say? No one can tell you you need a water softener without testing your water first." BINGO. They tested our water and determined we DO NOT need a water softener. Same approach for our broken shower. The mayo plumber actually researched the issue, spending time with the paperwork and on the phone with the Kohler rep to determine exactly what we need to do, before making a wild guess and upselling us. I've never seen a plumber like this - these guys are SMART and will be our go-to provider!"
+3
Serving Saint John, MO and surrounding areas
In business since 2007
Emergency services offered
Credit card accepted
"Mr. Paul is a extremely knowledgeable and compassionate about his business. He detected the problem of mold in my basement immediately. He was able to locate the source of the water intrusion. He was up front about the problem and what is would cost to fix it. He gave us multiple options on the prices. I am grateful for his honesty. I will definitely use him and refer him to my friends. Thank you Mr. Paul.
"
From average costs to expert advice, get all the answers you need to get your job done.
Learn average water filtration system costs in St. Louis, MO, key pricing factors, and ways to save on installation and maintenance for your home.
How much a water softener costs in St Louis, MO, depends on your home’s size and the system’s type and capacity. Our expert guide explores all the price factors.
Water softeners remove minerals from hard water in your home and make your water more pleasant to use. Learn more about how they work here.
Water softeners work to remove unwanted minerals from hard water through a filtration and recharge cycle. Keep reading to learn how a water softener works.
There are four common softener alternatives available on the market today. We compare and contrast each one to help you find your best-fit solution in this blog.
Water softeners rid your home of hard minerals and, well, soften your water. Even better, the regeneration process is an automatic cycle that works when you’re least likely to use it.
