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Verified Reviews for Water Softener Service pros in De Soto, MO
*The Angi rating for Water Softener Service companies in De Soto, 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 De Soto, 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 December 16, 2025
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Tony LaMartina Plumbing Company Inc
Tony LaMartina Plumbing Company Inc
Tony LaMartina Plumbing Company is a residential plumbing company with an established reputation of providing superior plumbing services to St. Louis homes for over 40 years. We are committed to delivering the highest quality plumbing services to our customers. Our commitment requires us to be the best in our industry at using our superior mechanical skills to solve our customer’s problems, resulting in a highly responsive and satisfying service experience.
"My kitchen sink faucet was leaking and needed to be replaced. I called Tony LaMartina because they are in my area and had a very good rating. The plumber came out and asked if I had a new faucet. When I didn't (I wouldn't have known what kind to get), the plumber said they did not have any faucets available and he would have to go buy one and it was going to cost more. He was back in a very short time. It only took him 30 minutes to put in the new faucet. After he finished , he told me the cost was $686 which was way more than I expected. I called the office twice to get a receipt to see why it was so much. I was told they do not separate their receipts between labor and materials. After talking to a couple of plumbers, I was told that amount was indeed way more than it should have been. I will never call them again."
Lynn M on December 2023
Tony LaMartina Plumbing Company is a residential plumbing company with an established reputation of providing superior plumbing services to St. Louis homes for over 40 years. We are committed to delivering the highest quality plumbing services to our customers. Our commitment requires us to be the best in our industry at using our superior mechanical skills to solve our customer’s problems, resulting in a highly responsive and satisfying service experience.
"My kitchen sink faucet was leaking and needed to be replaced. I called Tony LaMartina because they are in my area and had a very good rating. The plumber came out and asked if I had a new faucet. When I didn't (I wouldn't have known what kind to get), the plumber said they did not have any faucets available and he would have to go buy one and it was going to cost more. He was back in a very short time. It only took him 30 minutes to put in the new faucet. After he finished , he told me the cost was $686 which was way more than I expected. I called the office twice to get a receipt to see why it was so much. I was told they do not separate their receipts between labor and materials. After talking to a couple of plumbers, I was told that amount was indeed way more than it should have been. I will never call them again."
Lynn M on December 2023

Environmental Testing & Research Laboratories, Inc
Environmental Testing & Research Laboratories, Inc
ETR Laboratories in an analytic laboratory with a broad range of commercial, industrial and individual clients. We provide analytic services using a wide variety of scientific methods including GC/MS, IC/MS, GIR, NMR and SEM equipment. We can do particle analysis, organic and inorganic chemical analysis and micro analysis on biological and other materials. Private water analysis is our specialty. Award winning. Additional DBA - Environmental Testing & Research Laboratories Inc, ETR Labs, ETR Laboratories.
"as advertised"
Nancy C on July 2018
ETR Laboratories in an analytic laboratory with a broad range of commercial, industrial and individual clients. We provide analytic services using a wide variety of scientific methods including GC/MS, IC/MS, GIR, NMR and SEM equipment. We can do particle analysis, organic and inorganic chemical analysis and micro analysis on biological and other materials. Private water analysis is our specialty. Award winning. Additional DBA - Environmental Testing & Research Laboratories Inc, ETR Labs, ETR Laboratories.
"as advertised"
Nancy C on July 2018

Aqua Systems of Sullivan
Aqua Systems of Sullivan
Equipment Rental and in house financing available. We accept credit cards and often will offer open terms.
"They were great! Very prompt and professional, provided the pros and cons of the different systems, and no pressure to buy or make a decision. Would hire them again in a heartbeat!"
Eric F on February 2019
Equipment Rental and in house financing available. We accept credit cards and often will offer open terms.
"They were great! Very prompt and professional, provided the pros and cons of the different systems, and no pressure to buy or make a decision. Would hire them again in a heartbeat!"
Eric F on February 2019

Thome Plumbing Co
Thome Plumbing Co
Cost is determined by the job. Award winning. Family owned.
"It went very well. They were able to schedule Jason the day after I discovered the leak. Jason called 10 minutes before he arrived as he said he would. He immediately analyzed the problem and determined he could repair the old toilet or I could get a net toilet for about $400 more. His price was exact, I just don't remember exactly what it was because I decided on the new one. This was about what others had quoted me for the toilet I wanted. Jason ordered the new toilet, and it was delivered in about an hour and a half. In the mean time Jason replaced the old turn off valve which didn't work,and then the toilet when it arrived. The job was completed as promised. Jason was a very contentious, thoughtful, and through worker. He even was thoughtful enough to turn my basement lights off when he was finished. I cannot go into the basement because of my knees."
Henry F on December 2019
Cost is determined by the job. Award winning. Family owned.
"It went very well. They were able to schedule Jason the day after I discovered the leak. Jason called 10 minutes before he arrived as he said he would. He immediately analyzed the problem and determined he could repair the old toilet or I could get a net toilet for about $400 more. His price was exact, I just don't remember exactly what it was because I decided on the new one. This was about what others had quoted me for the toilet I wanted. Jason ordered the new toilet, and it was delivered in about an hour and a half. In the mean time Jason replaced the old turn off valve which didn't work,and then the toilet when it arrived. The job was completed as promised. Jason was a very contentious, thoughtful, and through worker. He even was thoughtful enough to turn my basement lights off when he was finished. I cannot go into the basement because of my knees."
Henry F on December 2019

Trionics
Trionics
A Full Service Company That Cares! At Trionics, Water is our passion. We understand the importance of Water’s impact on our everyday lives, both good and bad. It’s what drives us to find the best water solutions available in the water industry for Our valued customers.
"Excellent customer service and follow up. No high pressure sales. Brian just gave me the facts and sold me what I needed."
Brian L on June 2020
A Full Service Company That Cares! At Trionics, Water is our passion. We understand the importance of Water’s impact on our everyday lives, both good and bad. It’s what drives us to find the best water solutions available in the water industry for Our valued customers.
"Excellent customer service and follow up. No high pressure sales. Brian just gave me the facts and sold me what I needed."
Brian L on June 2020

Aqua Systems
Aqua Systems
7 Employees. Cost is determined by the job. No travel charge.
"Hours as stated on line are no longer reliable. One Friday afternoon I found them closed at 4:20; they are no longer consistently open in the afternoons and appear to take hour plus "breaks" since we have had to return multiple times to find them "open" again."
Marilyn T on September 2018
7 Employees. Cost is determined by the job. No travel charge.
"Hours as stated on line are no longer reliable. One Friday afternoon I found them closed at 4:20; they are no longer consistently open in the afternoons and appear to take hour plus "breaks" since we have had to return multiple times to find them "open" again."
Marilyn T on September 2018
R & S POOL & SPA
R & S POOL & SPA
Retail location- with parts, chemicals,toys and maintenance supplies, We sell above ground pools. we also test water and give advice on chemistry., and we have the best service department in St Louis. We do pool openings, closings,equipment repair and installation. We also work on most brands of spas.
"They were the only company I could find that would work on my heat pump. They were very knowledgeable and did a great job."
Susan B on January 2019
Retail location- with parts, chemicals,toys and maintenance supplies, We sell above ground pools. we also test water and give advice on chemistry., and we have the best service department in St Louis. We do pool openings, closings,equipment repair and installation. We also work on most brands of spas.
"They were the only company I could find that would work on my heat pump. They were very knowledgeable and did a great job."
Susan B on January 2019

Trinity Heating, Cooling, & Refrigeration LLC
Trinity Heating, Cooling, & Refrigeration LLC
Please contact us by phone : 314-780-2118 - Thanks ! Trinity Heating, Cooling, and Refrigeration is a full service mechanical contractor with over 20 years of experience in the industry. Ask how you can get a utility cash rebate and a federal tax credit with upgrading you heating and cooling system to a more efficient one.
"Excellent! The job was done very well"
Scott B on December 2020
Please contact us by phone : 314-780-2118 - Thanks ! Trinity Heating, Cooling, and Refrigeration is a full service mechanical contractor with over 20 years of experience in the industry. Ask how you can get a utility cash rebate and a federal tax credit with upgrading you heating and cooling system to a more efficient one.
"Excellent! The job was done very well"
Scott B on December 2020

JR Plumbing
JR Plumbing
7 employees. No subs. Cost is determined by job. Travel charges apply. Extra charge for after-hours services.
"JR Plumbing was contacted when my sewer backed up. They responded promptly and were at my house in about an hour. They opened up my sewer and restored regular drainage. The workers were very friendly and worked quickly to unclog the drain. Great job and highly recommended!!"
Dale M on December 2024
7 employees. No subs. Cost is determined by job. Travel charges apply. Extra charge for after-hours services.
"JR Plumbing was contacted when my sewer backed up. They responded promptly and were at my house in about an hour. They opened up my sewer and restored regular drainage. The workers were very friendly and worked quickly to unclog the drain. Great job and highly recommended!!"
Dale M on December 2024
FAIR REPAIR
FAIR REPAIR
Member Better Business Bureau - Eastern MO, Southern ILL
Member Better Business Bureau - Eastern MO, Southern ILL
FAQs for water softener service projects in De Soto, MO
The license requirements for water softener installation depend on your location. Some municipalities require that the installer hold a plumbing license, some require a permit and an inspection, but no license for the installer, and some require a permit and a license for the installer. Regardless of the local laws in your area, it’s always a good idea to hire a licensed plumber or installer. These pros will install your system properly and have the experience to size the system appropriately. Use Angi’s state licensing tool to check your installer’s license status.
Water softeners are worth the money if you live in an area with hard water. Hard water is safe to drink, but it poses serious threats to your plumbing system. The minerals in hard water will gradually build up on the inside walls of your pipes, reducing water flow to your fixtures. The minerals can also gradually corrode your plumbing system, reduce its lifespan, and increase the risk of leaks. Hard water also makes soap and detergent less effective. Water softener systems can solve all these issues, making them a great investment.
It’s possible to install a water softener yourself, but we don’t recommend it. Water softeners require working with copper pipes and electrical wiring, neither are suitable tasks for most DIYers. Plus, working with water and electricity together is dangerous and could pose a risk to your safety. Water softeners also need to be calibrated so that they don’t make your water too soft, as soft water poses just as many risks as hard water. Overall, it’s well worth hiring a local water softener installer to place your water softener system.
The cost to install a water softener system is $1,500 on average, ranging between $200 and $6,000. The labor for water softener work typically costs between $150 and $1,000, so you can add that to your equipment costs to get an accurate total. Your price will depend on many factors, including the following:
System capacity
Home size
Water hardness levels
Type of water softener
Presence of electricity in the installation area
Local permit costs
Your water softener size is based on your total household water consumption. In most cases, you can assume the average household member will use around 75 gallons per day. Multiply that by the number of people in your home, then multiply by 10 (for the typical grains per gallon). You’ll get a number in grains that should help roughly size your water softener. However, it’s best to hire a professional to install your system and use more exact numbers, like your exact average water consumption per day and starting water hardness.
The De Soto, MO homeowners’ guide to water softener services
From average costs to expert advice, get all the answers you need to get your job done.
•Wondering about water treatment system costs? Learn average prices, key cost factors, and ways to save on installation and maintenance for your home.
•How much a water softener costs depends on your home’s size, and the system’s type and capacity. Our expert guide explores all the price factors.

Your cost to install an under-sink water filter will depend on the type and size of system you choose and whether you need professional installation.

If your water softener is constantly draining, you may have a stuck valve, old seals, or electrical issues. Explore more common problems and solutions here.

If you're worried that calcium buildup is causing your pipes to corrode, you need to learn about DIY and professional ways to remove calcium buildup in pipes before something major happens.

Want to make sure you and your family have perfectly clean drinking water? Installing a whole-house water filter might be your best option.
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