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    Average homeowner rating
  • Verified reviews icon30
    Verified water softener services reviews

Top-Rated Water softener pros in Katonah - Updated Nov 2026

Avatar for Westfair Water Systems, Inc.
Westfair Water Systems, Inc.
4.8(
46
)
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or Service

Serving Katonah, NY and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"They were great to work with and more competitively priced than culligan. We were selling the home the water system was going into and needed to get the work done quickly before closing to address issues on the inspection report. They were great to work with and very responsive. We ultimately had installed a basic water softener, UV system and new sediment filter housing."
After
after
After
after
Before

+14

Response time10 hrs
30 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Old Faithful Pump Co
Old Faithful Pump Co
4.9(
42
)
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or Service

Serving Katonah, NY and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

"Excellent experience during a bad situation. We discovered our well head was leaking on a Sunday afternoon. Joe, the owner, came out the same day to assess the problem and told us how to avoid burning out the water pump. Joe and his crew came out the next day. Repaired the problem, with no surprises. He took the time to explain what was wrong and what he needed to do. Very professional, courteous, and knowledgeable. Everyone at Old Faithful Pump Co is friendly and it was pleasure doing business with them. We recommend Old Faithful Pump Company to everyone."
Additional Photos
Vernin Proof Well Head
Response time7 hrs
5 neighbors recently requested a quote
Recommended by100%of homeowners
Clear Water Pump & Water Conditioning, LLC
4.8(
31
)
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or ServiceWell Pump - Repair or Service

Serving Katonah, NY and surrounding areas

Approved

In business since 1997

Free estimates

Customers say: Quick response

"John was great. He came and installed the water softener while we were without power. Then he came back when the power came on to show us how to use it. He was the only person that followed up after we got a quote."
Response time11 hrs
Recommended by100%of homeowners
Noble Plumbing & Heating, LLC
4.4(
31
)
Water Treatment & Purification System - Install or Replace

Serving Katonah, NY and surrounding areas

Approved

In business since 2012

Free estimates

Credit card accepted

"They gave me a very good estimate to replace my hot water heater. We scheduled a time, and they showed up right on time, removed the old one, installed the new one without any leftover mess. The final cost was exactly as stated, with no hidden or additional fees. I was very happy with the quality of their work, and would recommend them to anyone."
Response time4 hrs
Recommended by92%of homeowners
Avatar for In Town Plumbing and Heating, Corp.
In Town Plumbing and Heating, Corp.
4.7(
33
)
Water Treatment & Purification System - Install or Replace

Serving Katonah, NY and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

"My old boiler was 53 years old! On its last legs. I got In town plumbings number from a neighbor who had her boiler installed by them. I called and the next day Guy was in my home assessing my situation. The next day I had a reasonable quote and the next week he was ordering my new boiler. He installed a new boiler and water tank in a day and a half! With his two employeesâ ¦.Frank and Carl. All these guys are amazing. Full disclosure I am a pain in the behind retired police officer. I ask all the silly questions. And Guy answered them all. This experience with our new boiler could not have gone better. I could go on and on. I highly recommend them for any plumbing situation."
Navien Combi Boiler Install
Navien Combi Boiler Install
Oil Fired Weil-McLain Boiler
Navien Combi Boiler Install
Weil-McLain High Efficiency Boiler

+22

Response time11 hrs
5 neighbors recently requested a quote
Recommended by89%of homeowners
Wilson Plumbing and Heating
4.5(
59
)
Water Treatment & Purification System - Install or Replace

Serving Katonah, NY and surrounding areas

Approved

In business since 2010

Customers say: Quality work

"My water heater was found to be leaking Friday afternoon. Wilson P&H came out that afternoon, verified what I knew, and was back Saturday morning installing a new water heater. Price was what I expected, service was fast and professional. Highly recommend."
Response time4 hrs
Response rate91%
2 neighbors recently requested a quote
Avatar for Cassidy Plumbing and Heating, Inc
Cassidy Plumbing and Heating, Inc
4.5(
31
)
Well Pump - Repair or Service

Serving Katonah, NY and surrounding areas

Approved

Super Service Award Winner

In business since 1992

Emergency services offered

Warranties offered

"I decided to go with Cassidy because out of the 4-5 different companies I contacted, they were the first to respond in a timely manner and their dispatch fee was affordable ($79 vs >$100). The actual service they provided went well. They were on time, finished the whole project within a couple hours and were professional. However, I did remove a star from my rating because they do overprice everything. I was able to cut down my total cost by >$300 by just buying my own supplies (ex: water faucet, basket strainer, faucet aerator, etc.). They were going to charge me $125 for something I was able to get for $4 and fix on my own, which I thought was ridiculous. Overall, I would recommend because they made the whole process go smoothly but I would just be aware of their pricing and make sure they don't trip you off."
Heating System
Heating System
Plumbing
The Team
Navien Water Heater

+3

Response time2 days
Response rate100%
9 neighbors recently requested a quote
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Water Softeners FAQs, answered by experts

You can decide whether you need a water softener or water filter based on how your bathing or laundry experience is. If you notice issues like limescale buildup, dry skin, or stains on dishes—all telltale signs of hard water—you'd likely benefit from a water softener. However, if your main concern is over chemicals or bacteria in your tap water filter, and not just comfort, a filter is a better option.

You can install a water softener system by turning off the water supply, draining the water, and then connecting your device to the waterline. Next, you’ll fill your tank with the recommended amount of salt or brine (whichever your unit calls for; be sure to read the instructions). Turn the water supply on and check for leaks. You can opt to let your water run for a few minutes, then test it using strips. 

The process of inspecting your water softener system is similar.

The main difference between a water softener and a water filter is what they remove from the water. A water softener is specifically designed to remove hard minerals, while a filter removes a wider range of contaminants above a certain size, such as bacteria and other impurities. If your primary goal is to remove minerals, a softener is the best choice. If you want to remove various contaminants for safety or taste, a filter is more suitable. Filters are also typically less expensive to install. Depending on your water supply's specific issues, you may need to install both systems for comprehensive treatment.

No, hard water isn’t dangerous. The added calcium in hard water can contribute to good bone health. However, it can also cause dry skin and hair. If you have dry skin or hair, consider using a water-softening system to help minimize the minerals in your water. Plus, these systems can also add some sodium to your diet. 

Soft water is better for your hair. The minerals in hard water can dry out hair, make it brittle, and leave a film on the hair and scalp that may cause irritation. Hard water also doesn't rinse out shampoo and conditioner effectively, which can lead to product buildup that makes hair look dull and limp. You may also find you need to use more shampoo to get a good lather in hard water.

The Katonah, NY homeowners’ guide to water softener services

From average costs to expert advice, get all the answers you need to get your job done.