Whole House Water Filtration

What’s in Your Water?

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No Hot Water? No Problem. Call the Water Heater Professionals at CastleWorks Today!

Whole House Water Filters in Dublin, CA

Whole home water treatment systems bring plenty of benefits to your homes’ plumbing & water quality. Cleaner, healthier water ensures safe drinking water & longer lasting plumbing & appliances, in addition to being much healthier & safer for the environment and your wallet alike. Improve your homes’ water quality & get the best in whole home water filtration system installation from the experts at CastleWorks. Our water quality plumbers will help you decide which type of water filtration system is best for your home, some of the most popular being:

  • Carbon Filter Water Filtration: Carbon filters can help treat water with bad taste or odors by using activated carbon as a water filter. Water flows through small pieces of carbon that absorb contaminants & can help in limiting the strong taste of chlorine, a chemical used in water treatment plants before it reaches your home.
  • Reverse Osmosis Water Filtration: Reverse osmosis water treatment is one of the more popular choices of water filters. Reverse osmosis can range from a simple purification process to a more complex, multi-step impurity removal process. In both cases, it is one of the most efficient water filtration systems in removing impurities leaving behind only oxygen & important minerals by forcing the water through a permeable film at the molecular level.
  • UV Filter Water Treatment: As with it’s name, these water treatment systems use UV light to treat your water, killing off various bacteria that may be in your water supply. Additionally, it’s a popular choice for the environmentally conscious as it does not require any chemicals or additional heat.

No matter your water quality needs, our water treatment & water filtration install plumbers will help you determine your needs before any work is done so you know exactly what water treatment solution is best for your home.

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Excellent656 reviews
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Andrew Lamson profile picture
Andrew Lamson
11 November 2026
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Nam Park was an excellent technician. He was patient and thorough. He was very careful with the house and wore protective booties until he put down blankets. He updated me regularly and worked expediently. Would highly recommend.
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Allan De Guzman
10 November 2026
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CHRISTOPHER DOHRER is the best technician.he do amazing jobs👏🏻👏🏻
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Jerry Hubner
10 November 2026
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Castle works responded with a technician on site within 2 hrs. Chris was professional and efficient in his presentation of the products available to us. We are very happy that the installation only took 2 hrs and that the completed project was left clean and looking great. Thank you Chris
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Danielle Benz
9 November 2026
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Miguel was the technician that arrived within a few hours of my call to check on my water heater. He quickly assessed the situation and provided me options. I decided to go with a new water heater and he had it installed in just a couple hours. I was able to give my toddler a warm bath before bedtime!
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william biagi
9 November 2026
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On Sunday November 8 our water heater broke down and also had a bursted pipe. We called CastleWorks Water Heaters and they made sure we turned everything off properly and set up the water drain system correctly. Within 90 minutes a technician named Erik Vargas arrived, and let me tell You -- this Guy was fantastic! Erik went through all of our options and explained everything perfectly and then went to work installing our new Water Heater. After the technician Erik left our garage looking better than it ever has. CastleWorks gets a rating of💯👍🧑‍🔧 from us. W.P. Biagi
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Patricia Stockton
7 November 2026
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Christopher was a very knowledgeable technician. He explained everything he did and why he was doing it. He was also very nice and friendly. I would recommend him to anyone.
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Richard Hartnett
6 November 2026
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Miguel did a great job! Very pleasant to talk to and very efficient. Also very knowledgeable about water heaters and installation.
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jeff carey
6 November 2026
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Jacob was our service technician. He was very professional and resolved the problem we had with our hot water heater.
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Jessie Lopez
6 November 2026
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Very friendly and knowledgeable
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Tom Thomas profile picture
Tom Thomas
2 November 2026
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Came out same day to inspect then replace my 8 yr old water heater. Knowledgeable technician Chris got to work after showing us the options.

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The CastleWorks story began in 1995 and grew from the collaboration of many dedicated local professionals committed to service. Our family of businesses includes:

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