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  • Verified reviews icon30
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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
29 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

"Joe is very experienced and very professional to replace my well pump, bring up the well cap to above ground level and installed house water filter. He discussed the job in detail and gave a fair quote. He came on time and did the job at high quality. He cleaned up everything before he finish. He took the 5% Angies list coupon as well. Will use him again and highly recommended if you need well pump service!"
Additional Photos
Vernin Proof Well Head
Response time7 hrs
6 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
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

"Anji recommended four plumbers. Cassidy was the first to respond on Friday afternoon. One other plumber responded but I could not understand his heavy accent, and he asked me if I wanted him to replace the whole burner assembly. That made no sense to me and I questioned him about it. Suddenly he became "too busy" and hung up the phone. Another plumber didn't respond until Monday morning. Too late. The fourth plumber never responded at all. Cassidy asked if it was an emergency or could wait until Monday. I said Monday. and asked what time? I did not get an answer on Friday. Around 8:30P I called and got an answering service which told me that I wouldn't get a response until Monday because their office closed at 8:00P. I had asked about what time on Monday before 6:00P George arrived Monday morning. He was friendly. He knew what he was doing. He replaced the thermocouple. All work was done neatly and professionally. We have hot water again. I'd use Cassidy again."
Heating System
Heating System
Plumbing
The Team
Navien Water Heater

+3

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

It’s not a good idea to oversize your water softener. Doing so will mean the tank doesn’t get full, which can lead to channeling. This leads to a large portion of the resin beads not being utilized and the beads at the bottom of the tank being overused. Over time, this will reduce the efficiency of your system, not to mention that the upfront cost of an oversized softener is unnecessarily high. If you have a timed regeneration cycle rather than a demand-based one, you’ll also spend far more on replacing salt than you need to.

Water softeners have many benefits. The most important one is converting previously hard water—water with too many minerals—to more usable, easier water. When we say easier water, we mean water that’s easier to digest, less harsh on skin and clothes, and builds up less in the water system. Softer water may lead to lower energy costs and will extend the lifespan of all appliances that use water.

No. You should never directly drain a water softener into a sewer cleanout. This practice is illegal in many areas because it could allow raw sewage to get into your drinking water and make you seriously ill. Many places have codes requiring a specific seal, pipe, and a large air gap between a water softener and a sewage cleanout. Check out Florida's Plumbing Building Code as an example of what these restrictions might look like.

If your water softener repair is fairly straightforward, like a simple filter replacement, then you can probably do it yourself with little risk. However, anything beyond a simple fix should be addressed by someone with extensive plumbing expertise to avoid costly water softener problems, like leaks. 

That said, even simple problems can be complicated to diagnose, particularly if your water softener is attached to a whole-house treatment system. So, unless you feel absolutely certain that the problem is an easy fix that you can take on yourself, it's probably best to hire a plumber to diagnose and fix the problem.

Hard water doesn’t hurt, but it might feel more abrasive, especially if you have sensitive skin. It’s also about how your skin feels after bathing. You might feel as though you have a sticky film over your body because you do—it’s all that soapy residue left behind because the hard water can’t rinse it off completely.

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.