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

Avatar for Oak Plumbing Inc
Oak Plumbing Inc
4.6(
101
)
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or Service

Serving Knightsen, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Emergency services offered

"The plumber came almost at the end of the appointed time. When he arrived, he was fairly arrogant, and refused to negotiate despite coming from Angie's list. Lastly, he repaired the leaky line in about an hour, charging $530, and also did not provide the water plastic box for water line. We had to purchase one from another store. When I paid for the invoice, they didn't tell me that they are charging additional 3% with credit card. All in all, they did the work, but at a high price, and so so customer service."
Response time2 days
5 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for Hydro Works Well & Pump
Hydro Works Well & Pump
5.0(
7
)
Well Pump - Repair or Service

Serving Knightsen, CA and surrounding areas

Approved

In business since 2004

Emergency services offered

Warranties offered

"Josh diagnosed our seized water pump on a weekend. He did and acid descaling and replaced a corroded pitless adapter. How our well is back to top performance."
Completed Pump System
Flow Test
Pressure tank & controller
Panel Mounting
Pressure system

+3

Response time8 hrs
23 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Bee Blessed Water Wells Drilling & Pump Service Inc
Bee Blessed Water Wells Drilling & Pump Service Inc
4.6(
16
)
Well Pump - Repair or Service

Serving Knightsen, CA and surrounding areas

Approved

In business since 2021

Offers commercial services

Customers say: True professional

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!

Response time1 day
Response rate94%
19 neighbors recently requested a quote
Avatar for AAA Water Systems
AAA Water Systems
4.7(
57
)
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or Service

Serving Knightsen, CA and surrounding areas

In business since 1993

Free estimates

Emergency services offered

"Damian Fernandez came out to our home for a consultation and presentation of the Kinetico water softener system. He was very thorough, patient, and friendly, and answered our very many questions with expertise and professionalism. Great customer service."
Whole Home Softener / Filter & Reverse Osmosis System
Whole Home Softener / Filter & Reverse Osmosis System
Compact Kinetico Drinking Water System. NSF 58 Certified to provide high quality drinking water!
Desktop style Kinetico Drinking Water System providing high quality water with NSF 58 certification.
Compact Kinetico Drinking Water System. NSF 58 Certified to provide high quality drinking water!

+18

Response time1 day
13 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Clearwater Plumbing
Clearwater Plumbing
4.9(
225
)
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or ServiceWell Pump - Repair or Service

Serving Knightsen, CA and surrounding areas

In business since 1998

Free estimates

Emergency services offered

"Tyler was awesome and originally we thought we'd just need a faucet water hose to be looked at, but he discovered the real source of the issue and was able to fix that. He then discovered a few other things that had been/were leaking and took care of all of that in the time he was at the house. A very honest person, had high integrity, was polite and very professional. He was able to answer a lot of questions we had and made us feel confident in his abilities to get he job done right. I'd definitely hire again for any plumbing needs."
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+18

Recommended by97%of homeowners
Avatar for Superior Plumbing & Drain Cleaning Services
Superior Plumbing & Drain Cleaning Services
4.5(
563
)
Well Pump - Repair or Service

Serving Knightsen, CA and surrounding areas

In business since 2002

Emergency services offered

Warranties offered

"From the time I called, to when the technician came and work done, was only few hours. I am impressed. I called Sunday morning, Victoria answered my phone promptly. I told her I had similar work done in 2015, she was able to find the record for reference (wow). She called soon after to let me know she scheduled Adrian to come out. No extra charge for Sunday. Adrian impressed me with his professionalism - hand shake on first introduction, cordial demeanor, put on bootie when coming inside the house without asking, and explained what he was doing. He trouble shoot, examined different areas and then used the snake through a pipe opening that was on the outside of the house to clear the clog. After the blockages were cleared, he checked the kitchen sink, laundry sink and overflow vent to make sure water is flowing through. I saw how he trouble shoot, doesn't quickly gloss over as job done when the blockage was cleared. He made sure everything was in proper working order. I would re-hire him. All work is guaranteed for 30 days."
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+9

Response time7 hrs
Response rate100%
Recommended by88%of homeowners
Benjamin Franklin Plumbing Novato
3.9(
264
)
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or Service

Serving Knightsen, CA and surrounding areas

In business since 1996

Free estimates

Emergency services offered

"Our water bill doubled within the last year.  They came in and replaced a flow valve in our toilet.  That fixed the problem.  They were very responsive and appeared to be very knowledgable.  I will definitely use them again."
Recommended by73%of homeowners
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Water Softeners FAQs, answered by experts

While not everyone can detect taste differences in high-calcium water, water that has a slightly metallic taste probably has too much calcium.

Whether you need a permit or license for a water softener installation depends on your location, as requirements vary significantly. Some municipalities require the installer to hold a plumbing license, some mandate a permit and an inspection, and others require both. In some areas, no special permit or license is needed at all.

To determine the rules in your area, you can contact your local building department or consult a local water softener installer or plumber. Often, only certified professionals are authorized to pull the necessary permits, and they will typically handle the entire permitting process for you. Regardless of local laws, it is always recommended to hire a licensed professional to ensure the system is sized and installed correctly. You can use Angi’s state licensing tool to check an installer’s license status.

The primary difference between a water softener and a water filter lies in what they remove from the water. A water softener is designed to remove hard minerals like calcium and magnesium. In contrast, a water filter has a broader effect, removing various contaminants above a certain size, which can include bacteria and other impurities.

To decide which you need, consider your goal. If you want to eliminate hard minerals, choose a softener. If you want to remove a wide range of contaminants, a filter is the better option. Filters are also generally less expensive to install. Depending on your water supply, you may need to install both for comprehensive treatment.

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.

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.

The Knightsen, CA homeowners’ guide to water softener services

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