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Top-Rated Water treatment pros in Port Costa - Updated Nov 2026

Avatar for Oak Plumbing Inc
Oak Plumbing Inc
4.6(
104
)
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or Service

Serving Port Costa, 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
4 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for Gray Plumbing, Inc.
Gray Plumbing, Inc.
4.3(
6
)
Water Treatment & Purification System - Install or Replace

Serving Port Costa, CA and surrounding areas

Approved

In business since 2016

Small jobs welcome

Credit card accepted

"Michael Smith gave us a very excellent service. Weâ re so happy to have him fix our big problem with the water leak infront of our house. He has really a great knowledge and the best quick service performance.. We truly appreciate your help. More power to the company!"
Installation Complete
Old Kitchen Faucet
Tankless Water Heater
Water Heater Before
Dual Rinal tankless water heater

+15

Response time1 day
Response rate100%
86 neighbors recently requested a quote
Avatar for Edym Plumbing
Edym Plumbing
5.0(
1
)
Water Treatment & Purification System - Install or Replace

Serving Port Costa, CA and surrounding areas

Approved

In business since 2024

Free estimates

Credit card accepted

"Edy is the best plumber I have worked with! With my recent purchase of an older condo, I wanted to replace both toilets, supply lines and shut off valves in both baths, and kitchen. Edy was very professional, walked me through the work and offered fair pricing! Thanks again Edy!"
EDYM PLUMBING
EDYM PLUMBING
EDYM PLUMBING
EDYM PLUMBING
EDYM PLUMBING

+5

2 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 Port Costa, CA and surrounding areas

In business since 1993

Free estimates

Emergency services offered

"I feel so much better our family has cleaner drinking water! I have been considering getting a whole house water purification system and found Kinetico by AAA Water Systems. We had an appointment with Damian Fernandez. He was so nice and took the time to make sure we understood how the water system works and answered all of our questions. I was also horrified that the water test showed that what we had been drinking barely met regulations. The installation only took one day to complete. Jessie was courteous and confirmed my preferences before installing the system. The tanks take up much less space in our garage than I thought. Then Jessie walked through how to turn it off and on as well as how to maintain it. In the end I’m very pleased with the service and product! Here are a few things to consider… laundry pods have too much detergent and will stain your clothes. After the system is installed you’ll need much less detergent (money saver) for the washer and dishwasher. Also you’ll need to decide where you want your untreated water faucet to be. I chose inside the garage with the treatment system but I wish I would’ve chosen the outside faucet so I can water my plants with that water. Also if you’re like us with conserving water in this drought, keep in mind you can’t use the grey water from the house in your yard or garden. The treated water is not good for plants. Your house plants need to be watered with the hard, untreated water."
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
11 neighbors recently requested a quote
Recommended by95%of homeowners
Benjamin Franklin Plumbing Novato
3.9(
264
)
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or Service

Serving Port Costa, CA and surrounding areas

In business since 1996

Free estimates

Emergency services offered

"I thought it was really expensive because I got a 7 years contract.  They gave me a 50 gallon water heater because the specs were changing the following month for what’s required for water heaters so they gave me one that was bigger than I needed. It worked fine."
Recommended by73%of homeowners
Showing 1-10 of 35

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