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Top-Rated Water treatment pros in Brentwood - Updated Nov 2026

Avatar for Oak Plumbing Inc
Oak Plumbing Inc
4.4(
542
)
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or Service

Serving Brentwood, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Warranties offered

Small jobs welcome

"I didn't watch the technician closely., I didn't want to be in the way. .The technician was determining if the water heater was causing the particle deposits in my water pipes. It was determined the water heater was not the problem."
Two-Stage Filter
Two-Stage Filtration
Toilet Install
Water Heater
Safety Bars ADA

+7

Response time5 hrs
Response rate92%
11 neighbors recently requested a quote
Avatar for Almighty Plumbing
Almighty Plumbing
5.0(
1
)
Water Treatment & Purification System - Install or Replace

Serving Brentwood, CA and surrounding areas

Approved

In business since 2013

Emergency services offered

Warranties offered

We're dedicated to providing our clients with the very best in service, installation, and repair for all phases of your plumbing needs. We specialize in a variety of residential services and take pride in the attention to detail put into each of the projects we're involved with. We're 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.

Response time10 mins
Response rate100%
1 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 Brentwood, CA and surrounding areas

In business since 1993

Free estimates

Emergency services offered

"Wow talk about an improvement on quality of life. And I feel lucky that we ended up with Damian Fernandez who was such a naturally great person. I received a call from Damian shortly after I inquired with home depot for a whole house water treatment system. He came on-time and well-prepared for my appointment providing a positively enlightening and enjoyable experience. What was also nice was that he did not pressure me to purchase anything. I settled for the top-tiered product that Kinetico offered which was a very expensive system and wished that I didn’t have to spend that much. Still, expensive upfront but besides the greatly improved quality of life, I will be saving on future costs from damages that hard water can cause on my new home, appliances, and health. I’ve been suffering from dry skin, and eczema throughout my face and body. I’ve used a lot of different skin products and they’ve just provided temporary relief. Long story short, my skin has never felt better and it feels so good thanks to Kinetico’s water system. Also, the installation of our water system was perfect and problem free thanks to Ben. I am very pleased with their product and would highly recommend it to anyone. I also strongly recommend having Damian Fernandez help you with your home water treatment needs."
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
15 neighbors recently requested a quote
Recommended by95%of homeowners
Mansour Matt Azizi
4.7(
50
)
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or Service

Serving Brentwood, CA and surrounding areas

In business since 2017

Free estimates

Warranties offered

"Since our water heater chose to quit working on a Saturday afternoon, we were glumly anticipating cold showers and no clean laundry for Monday back to work. Instead, Matt was early (arriving 1.5 hours earlier than estimated on a Sunday), he clearly explained the (slight) differences between the two types of recommended water heaters, he installed the water heater quickly, and we're back on track for our Sunday cleaning and laundry."
Response time5 hrs
Response rate92%
Recommended by93%of homeowners
Benjamin Franklin Plumbing Novato
3.9(
264
)
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or Service

Serving Brentwood, 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
Showing 1-10 of 38

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