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

Avatar for Simply PUR Water Filtration
Simply PUR Water Filtration
5.0(
39
)
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or Service

Serving Smithtown, NY and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"Simply PUR was a pleasure to work with from start to finish. They were personable and provided us with a lot of information and answered all of our questions. The installation process went smooth and they came back to check our water filtration systems and retested my water. They were honest and sincere and most importantly very reliable and professional the whole way through. Its always a pleasure dealing with Simply PUR. I highly recommend using this company and will continue to refer my friends and family to use them."
Pentair Fresh Point 575M
Pentair Fresh Point 575M
Farmingville Home
East Williston Home
East Chester Home

+94

Response time1 day
Response rate89%
26 neighbors recently requested a quote
Avatar for Long lsland Clean Water Service, Inc.
Long lsland Clean Water Service, Inc.
4.6(
67
)
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or Service

Serving Smithtown, NY and surrounding areas

Approved

In business since 1985

Free estimates

Emergency services offered

"From the sales representative, Anthony, to the owners Mark and Madelyn, our family's experience with this company was impeccable. They showed such care and compassion once they found out that the Long Island's hard water in our home caused our 5 month old skin to breakout so badly. She was in such distress and they went above and beyond the call of duty to ensure that the water system was installed ASAP. The installers were so considerate that they even removed their shoes while working in our kitchen, without us asking them to do so. They worked efficiently and were very thorough. Jennifer who handles the office matters, was a pleasure to work with. As she rightfully texted me, It takes a village to raise a child and we truly are blessed to be a part of this water family. We rewashed the baby's clothes and you can immediately feel the difference and the natural products that can only be ordered through the company will save us tons of money from household cleaning supplies to bodywash everything is all natural. I have already convinced my pastors to have the system installed in their new long island home and will continue to recommend this company to everyone I can. Worth every single penny!"
Bypass
Whole House Water Filtration System with UV Filter
Reverse Osmosis
Reionator Pro Ultra
Reionator Pro Ultra

+6

Response time2 days
10 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Leaf Home Water Solutions
Leaf Home Water Solutions
4.2(
202
)
Water Treatment & Purification System - Install or Replace

Serving Smithtown, NY and surrounding areas

Approved (Corporate)

In business since 2020

Free estimates

Warranties offered

"The sales rep took several water testsâ ¦ The sales rep took several water tests and showed me the results. She told me that I needed more than just a water softener. I also needed a system to address the rust and iron in my well water. I did not want to spend a fortune but the sales lady was pretty convincing. The price was good and the workmanship was excellent. My water is clean again ! Now I can tackle the original problem. My toilet has bad rust stains. I will either get it clean, or replace it. I could not do this until the water was fixed."
Leaf Home Water Solutions
Leaf Home Water Solutions
Will filtered water help me save money?
What does filtered water taste like?
How do I know what contaminants are in my water?

+44

149 neighbors recently requested a quote
Recommended by71%of homeowners
Avatar for HealtheHabitats
HealtheHabitats
4.9(
50
)
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or Service

Serving Smithtown, NY and surrounding areas

Approved

In business since 2016

Credit card accepted

Customers say: Quick response

"Amazing company!!! Very professional and knowledgeable about everything. Michael is very friendly, and did a great job on cleaning EVERYTHING in our house after construction. If you want it done right and perfect , hire this company!!! Thank you Michael , we can finally feel at home now!!!"
Response time6 hrs
5 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Excellent Plumbing & Heating
Excellent Plumbing & Heating
4.9(
28
)
Water Treatment & Purification System - Install or Replace

Serving Smithtown, NY and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"Excellent Plumbing was fantastic - he installed a new faucet, vanity, and water filter for me. Super punctual, really professional, very communicative, and paid close attention to detail. Everything's working great. What really stood out was Joe's dedication. He came back to check on the work and found an unrelated issue with my kitchen sink (which was already there). He gave me some great tips on how to fix it. I highly recommend Joe and Excellent Plumbing & Heating for any plumbing work. He's super skilled and has awesome customer service."
Oil to Gas Conversion
Response time3 hrs
Response rate99%
Recommended by42%of homeowners
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Water Softeners FAQs, answered by experts

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.

Yes, you can have both a water softener and a water filter. In fact, some manufacturers sell dual water softening and filtration systems that treat hard water and provide clean drinking water. If you’re unsure about what you need or want to discuss your options, reach out to a local water softener installation company.

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. 

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.

Because it’s been through the water cycle, evaporating and becoming slightly acidic thanks to dissolved carbon dioxide in the atmosphere, rainwater tends to be naturally soft compared to groundwater, which has just been in contact with limestone. However, the natural hardness level of water always depends on where you are and other factors.

The Smithtown, NY homeowners’ guide to water softener services

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