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Top-Rated Water treatment & purification system installers and replacers in Algonquin - Updated Nov 2026

Avatar for Springsoft International, Inc.
Springsoft International, Inc.
4.8(
145
)
Water Treatment & Purification System - Install or Replace

Serving Algonquin, IL and surrounding areas

Approved

In business since 1960

Free estimates

Warranties offered

"Great experience with Springsoft. Al called me and actually came to se us earlier than expected. He thoroughly explained our options and answered all our questions. His quote was almost 50% less than a competitors (not on HomeAdvisor). Ken, the installer, did a great job and explained the operation of the system clearly. When a small leak was detected, they fixed it the same day that we called. Our well water is now clean and odor free."
Chemical Feed and Water Softener
RO & Twin Alt Softener
Standard Reverse Osmosis & Water Softener, Pex
St Charles IL, photo 1
St Charles IL, Photo 2

+14

Response time5 hrs
Response rate90%
Recommended by98%of homeowners
Avatar for Pure Flo H20
Pure Flo H20
4.9(
53
)
Water Treatment & Purification System - Install or Replace

Serving Algonquin, IL and surrounding areas

Approved

Super Service Award Winner

In business since 1991

Free estimates

Emergency services offered

"Good customer service!!!! I called them Christmas eve because our water softener gave up. Chris answered right away and walk me through so we can have our water back. Really appreciate the quick response and the work they’ve done. Very thorough and detailed explaining the issues we had and gave us tips on how to care for the new system they installed. Worked with us also paying for the whole system."
Pro series softener
Water filtration
Water treatment system
Water treatment systems
Reverse osmosis, system

+8

Response time4 hrs
Response rate100%
51 neighbors recently requested a quote
Avatar for Aqua Knight Plumbing Co.
Aqua Knight Plumbing Co.
5.0(
16
)
Water Treatment & Purification System - Install or Replace

Serving Algonquin, IL and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

With 24 years of experience we are dedicated to providing our clients with the very best in service, installation, and repairs for all phases of your plumbing needs. We specialize in a variety of residential and commercial services from water heater installations, sewer main installations, sump pump installations, repairs and so much more! We take pride in the attention to detail put into each of the projects \nwere involved with. Were known for our quality work and the integrity of our business. We look forward to building long-term relationships with our clients, and guarantee your satisfaction. \n \nAll Work Is Warrantied - Inquire Within \n \nMilitary Veteran and First Responders Discounts Available - Inquire Within \n \nDeposits May Be Required - Inquire Within \n \nAccepts Cash, Checks & Major Credit Cards \n \nFinancing Options Are Available - Inquire Within \n \n24/7 Emergency Services Available \n \naquaknightplumbing.com

New Sump Pit
Outside Clean Out
Outside Clean Out
March 2026
July Clog Log

+177

5 neighbors recently requested a quote
Recommended by31%of homeowners
Avatar for Leaf Home Water Solutions- Milwaukee
Leaf Home Water Solutions- Milwaukee
4.1(
197
)
Water Treatment & Purification System - Install or Replace

Serving Algonquin, IL and surrounding areas

Approved (Corporate)

In business since 2020

Credit card accepted

Offers commercial services

Leaf Home Water Solutions provides best-in-class water filtration and softener products for healthy, purified water that protects both the home and family. With state-of-the-art water testing materials, dedication to White Glove installation and service, best-in-class products, and the support of the nation's largest home solutions company, homeowners can feel confident choosing Leaf Home Water Solutions. Since all installations are tailored to specific water needs, custom solutions may include enhanced impact on hair and skin, energy savings on bills, increased appliance longevity, and elimination of hard water contaminants like calcium and magnesium, while also combatting taste and odor issues by filtering out chlorine and other organic compounds. The team of professionals at Leaf Home Water Solutions takes great pride in knowing that families are provided with the cleanest, crispest, and heathiest water possible.

84 neighbors recently requested a quote
Recommended by73%of homeowners
Avatar for Four Seasons Heating & Air Conditioning
Four Seasons Heating & Air Conditioning
4.3(
3,299
)
Water Treatment & Purification System - Install or Replace

Serving Algonquin, IL and surrounding areas

Approved (Corporate)

In business since 1971

Free estimates

Emergency services offered

"The service men were cordial and polite. These informed me as to their requests and how they were going to proceed with the duct cleaning. After the cleaning the area was policed and everything was back in order. An excellent experience and I would recommend 4 Seasons to anybody that may need a new system, or to have their system cleaned."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Response time9 hrs
44 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Cosmic Plumbing LLC
Cosmic Plumbing LLC
5.0(
16
)
Water Treatment & Purification System - Install or Replace

Serving Algonquin, IL and surrounding areas

Approved

In business since 2025

Free estimates

Warranties offered

"Chad from Cosmic Plumbing did a great job communicating throughout the process. He came in and diagnosed the situation, explained it to me, and suggested how he was planning to resolve the issue. He then did the work and in less than 30 minutes he was done. The price seem fair and I would definitely hire him again."
4 neighbors recently requested a quote
Avatar for Water Specialties Group, Inc.
Water Specialties Group, Inc.
4.3(
52
)
Water Treatment & Purification System - Install or Replace

Serving Algonquin, IL and surrounding areas

Approved

In business since 1994

Free estimates

Emergency services offered

"I found this to be the perfect customer service experience! Joe was professional, friendly and informative. He quickly diagnosed my problem and immediately fixed it. Fortunatley it wasn't a big issue but rather a couple of small issues. He also carried in ten 40 bags of salt for me. He explained some features and showed me how to manually recharge the softener just in case it ever needs it. I HIGHLY recommend Water Specialties Group. this is how a service call should be done."
Response time2 days
4 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for SPRINGSOFT INTERNATIONAL INC
SPRINGSOFT INTERNATIONAL INC
4.0(
9
)
Water Treatment & Purification System - Install or Replace

Serving Algonquin, IL and surrounding areas

Approved

In business since 1960

Free estimates

Warranties offered

"I had a lot of trouble getting to the bottom of why my water suddenly was full of iron and staining everything in the house.  I am new to this dwelling and do not understand wells.  I had contacted several well inspecting companies and was unable to get anyone to come out to inspect.  Suddenly I called a reliable well company and it was recommended to me that I start by having my water softner checked and they recommended Springsoft.  I made an appointment, half expecting another bad incounter but was pleasantly surprised by the person who made the appointment but more importantly by the service man they sent.  He was the BEST! He took time with me and explained the functions and controls on the water softer very clearly.  He also inspected the softner and flushed it thru to make sure it was working properly.  He explained how to set it so it regenerated during a slow water use time (like the middle of the night) because it had been regenerating irregularly but not at a low use time.  I was very happy with the knowledge he displayed and how readily he taught me to be a knowledgeable owner of this here to for mysterious gadget.  BEST ENCOUNTER OF ITS KIND IN YEARS!!!!!!  This service man should get a raise!!!!!  Thank you for saving my sanity. "
Response time1 day
Response rate100%
2 neighbors recently requested a quote
Avatar for RainSoft of Chicago
RainSoft of Chicago
3.8(
18
)
Water Treatment & Purification System - Install or Replace

Serving Algonquin, IL and surrounding areas

Approved

In business since 2009

Free estimates

Warranties offered

"The salemam put on an hour presentation so that I could see my bad water verses the filtered water. He was patient with me and most importantly he didn t act as if he was wasting his time and assume that I couldn t pay for the system. The system works great and I saw a difference immediately. The system was installed neatly and I although I initially inquired about the water system for bathing and washing only; I also purchased the reverse osmosis system for drinking water. They are pricey though."
Clean Start
EC5
Air Master
Response time1 day
Response rate97%
Recommended by100%of homeowners
Avatar for H2O Express
H2O Express
4.7(
188
)
Water Treatment & Purification System - Install or Replace

Serving Algonquin, IL and surrounding areas

In business since 2000

Free estimates

Warranties offered

"Dave and his son did an excellent job! We are very happy with our new water! Dave really cares about the job that he does. He is very reasonably priced and got our job done when he told us that he would! I will definitely recommend H2O Express to anyone who needs a water purification system!"
Response time8 hrs
Response rate88%
Recommended by97%of homeowners
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The Algonquin, IL homeowners’ guide to water treatment & purification system installations and replacements

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