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City Water Filter
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Reverse Osmosis System Installation/Repair
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Whole House Filtration
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Highlights from the Business
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Free estimates
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Workmanship commitment
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Parts & labor commitment
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13 years in business
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Offers customized solutions
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Family-owned & operated
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Review Highlights
“Fernando also determined that a leak detector was broken so he replaced that during his most recent visit.” in 90 reviews
“Purchased a reverse osmosis system which was professionally installed under the kitchen sink by Larry and his son.” in 26 reviews
“Over the years we have added systems and have recently changed from a water softener to a conditioning system.” in 39 reviews
About the Business
Business owner information
![Photo of Clay R.](https://s3-media0.fl.yelpcdn.com/assets/srv0/yelp_styleguide/bf5ff8a79310/assets/img/default_avatars/user_medium_square.png)
Clay R.
Full service plumbing and water filtration services offered. CWF holds a C-36 full plumbing license. CWF offers all plumbing services, repipe, and repair. Highest rated water filter installation and maintenance service since 2014 in Santa Clara County based on customer reviews. Our business is service-oriented with generous 5-year warranties on our drinking water systems and a full 10-year warranty on our entire water softener. The primary owner of CWF has his Master's degree in Environmental Engineering in addition to a full-plumbing C-36 license. Our warranties are the longest in our industry where no labor or parts are charged. Because of our warranty, level of service and high quality equipment, City Water Filter has maintained the highest rating in the Bay Area for almost a decade.
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Ask the Community
Q:
For kitchen sink water filter instalations, can you cut an access hole in a granite countertop if required?
A:
Q:
A C-55 license is required by California to perform water conditioner installation, do you have the C-55?
A:
We are licensed for all plumbing and water filtration with a C-36. Since we possess a C-36 full plumbing license, our installation services do not require a C-55 water conditioner license . California State License Board is an excellent resource… more
Clay R., Business Owner
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Overall rating
410 reviews
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- Eric K.San Jose, CA05Jul 17, 2022
We were putting off doing something about SJ's dreaded hard water for a while but after replacing our dishwasher and washing machine because of the sentiments from the water, we finally bit the bullet and started looking for a water softener system. We received a few quotes but in the end decided to go with City Water Filter. Clay's professionalism and his ability to understand our problems and provide sensible solutions was what made us go with him.
We chose to have a full water softener system and RO system installed per Clay's recommendation. Chris and Larry were able to come by a few days later to install the system and it was nice to have technicians who are true tradesmen within the industry. The installation was very cleanly done and they went above and beyond to ensure that my requests were fulfilled. A lot of times, the difference between a good install and a great install is in the details and they certainly delivered.
We now have great quality soft water for our appliances and also clean drinking water through our RO system. Highly recommend City Water Filter.Helpful 0Thanks 0Love this 0Oh no 0 - Sep 28, 2023Updated review
Updated review 9/28/23: it's been almost 7 years since City Water installed my softener system and RO system. They have always done an amazing job coming out annually to replace the filters and such. This time around it was time to change out my whole RO system for a new one, mine was getting to end of life and I didn't want any issues. Clay initially came out and assessed my systems and gave his recommendations. He is amazing, full of awesome knowledge and great to talk to. Next day he had Larry and his son swing by to set up the systems. I got the new RO system and added a carbon filter to my existing water softener that also has a sediment filter. The two of these combined will definitely provide cleaner water. Overall, everything took about a little over an hour. Larry and his son were very professional, polite and finished everything perfectly. City water is the only place I'll go through. They love their customers and always go above and beyond.
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Clay R.
Feb 1, 2021
We are glad you chose City Water Filter Corporation too, Igor! Our team is dedicated to providing our customers with exceptional services and it is a pleasure to hear that is exactly what you have received. Thank you for taking the time to leave your feedback and have a nice day!
Jan 29, 2021Previous reviewLong overdue review. I have had my whole home filter, water softener and reverse osmosis system from city water for about 3 years. I am very happy with the system and how amazing the water feels. I have had no issues and always have them come annually for the scheduled maintenance. The technicians are professional and respectful. Overall, I am glad I chose them.
- Jan 29, 2023Updated review
I been using City water filter for over 8 years now.
Chris stop by this week to replace my yearly filters for the RO system. He did a great job and help test my water to recommend any additional system I might use.
Happy customer and will keep using!Helpful 0Thanks 0Love this 1Oh no 0Dec 11, 2014Previous reviewI just had a new born in Oct, and with the recent drought in the bay area, a lot of cities water quality had been going down. With a new born drinking formula, I was getting suspicious of using nursery water (google nursery water for formula and you will see what I mean). So after doing plenty of research, I decided getting a RO system and then boil the water for my baby formula uses.
After I call Clay a few days before thanksgiving to make an appointment, he was able to come within a few days! He promptly comes out to my house and installed the RO system and answer all my questions about filter water. He's very knowledgable and great to work with.
After talking to him, I decide to install a whole house carbon filter as well, as apparently, a new born absorb quite a bit of water thru baths! (so do adults)
So far, I been using the system for a few months, and the RO system water taste great, and my skin feel quite different in a good way after showers.
I highly recommend everyone getting a RO system with a whole house carbon filter, and since my installation was pretty straightforward, everything cost less than a grand. Consider how much water we drink and uses, it's totally worth the investment, especially if you have a new born or young children in the house. - Vamshidhar D.Sunnyvale, CA72Feb 17, 2024Updated review
I provided feedback too soon. This company sent rookie workers to install the RO system in our place. Something went wrong in the installation and I see a leak under the sink now. Worse yet, they claim this is not their fault. Half the good reviews here are because they ask for it in return for three bags of softener salt. Had I known this is not an experienced crew, I wouldn't have hired their services.
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Clay R.
Feb 17, 2024
Thanks for your previous 5-Star review. Nobody bribed you for that, ridiculous. Your updated negative review is misleading and insincere. You have had an existing plumbing leak before we installed the system under the sink. After we installed the reverse osmosis, it kept triggering the leak detector on the reverse osmosis which stops the reverse osmosis from working. Any leak under the sink will trigger the leak detector and shut off the reverse osmosis. You claimed the reverse osmosis wasn't working. It worked all along, but you had an existing plumbing leak. My office told you we could send a plumber out there, or you get your own plumber. Why am I going to warranty a leak on your plumbing under the kitchen sink when I didn't install those components? So all that is going to happen here, is that we will no longer do business again and your warranty will be void. I knew that you and your wife didn't have the intelligence level to grasp that the problem wasn't related to our work. Also, the guys I sent to your home were very experienced as they also installed a whole house system which has worked flawlessly. It is your choice to goe down this path as we will sever all future business relation in the future.
Feb 10, 2024Previous reviewLarry came for installation of water softener and RO. The installation process was smooth, timely and hassle free.
- Robert A.Livermore, CA099Aug 14, 2023
When we bought our home in 2020, the whole house filter and RO system were already installed. The previous owners left us all the paperwork given to them by City Water Filter so naturally we contacted them when the water quality started changing.
The filters in the system need to be changed yearly. Our first experience with them was great, they were responsive and had someone out within 2 days. After service our water flow from the RO system was not as strong and they had someone come out next day to fix the issue.
I contacted CWF on Friday as it was time for our system to be service. I took their first appointment on Monday at 7 AM. Fernando showed up at 645 which I greatly appreciate, he was quick, respectful of the property and very friendly.
Our water pressure was low and it was due to a bad tank, I thought I would have to wait for one to be ordered but he had a new one which was installed right away.
Fernando was in and out in less than an hour which was much appreciated.
Thank you for the excellent service Fernando!Helpful 1Thanks 0Love this 0Oh no 0 - Niko D.Campbell, CA01412Sep 24, 2023
Purchased a reverse osmosis system which was professionally installed under the kitchen sink by Larry and his son. Clay the owner is very knowledgeable and passionate about water and his filtration systems. The installers showed up on time and installed my system within 2 hours and also installed a line to my refrigerator so that my ice and water from the fridge is filtered. They did an excellent job installing my RO system and the installation was done cleanly and carefully. TDS (total dissolved solids) before installation from my drinking water was 180. After the installation of my RO system the TDS is now 14. My water tastes great! If you're looking for a reverse osmosis system at a very reasonable price I would highly recommend City Water Filter.
Helpful 0Thanks 0Love this 0Oh no 0 - Craig M.SoMa, San Francisco, CA02Jun 7, 2023
I recently purchased a home that included a water softener system and RO system. City Water Filtration was the original installer and service company listed.
I called and scheduled my first service for the systems. Fernando was the scheduled service tech. He was early, which is awesome, as I'm one of those " if you're on time....your late" people. He was professional, friendly and knowledgeable. He was early
Thank youHelpful 0Thanks 0Love this 0Oh no 0 - Sean B.San Jose, CA04Mar 17, 2024
Avoid this company at all costs. Dishonest and aggressive business practices. Everything seems fine for the first few years and then you figure out this company is all about the $$. We purchased a whole house filtration system and RO system 5-6 years ago. After ~4 years or so they start sending letters and emails warning about increased risk of catastrophic failure for filter housings and encouraging you to replace all your housings. At 5 years, they tell you if don't purchase all new filter housings, and replace your entire RO system , they will no longer provide filter service unless you sign a release of liability waiver (essentially removing all your rights in the event they cause problems that damage your home). Ask any reputable water filtration company and they will tell you there is zero reason to replace housings every 5 years. Same goes for RO systems which can last 15-20 years. When I asked City Water filter to provide justification for the 5 year replacement they gave me the runaround and eventually stopped answering emails.
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Clay R.
Mar 22, 2024
I really take a personal pride with negative reviews like Sean's, because it allows me to showcase our unwavering commitment to not damage our customer's home with water damage events.
Sean has been a fantastic customer for 6 years and never experienced water damage at his home from our equipment. He never left a bad review for 6 years. Now that he refuses to sign a waiver of liability because he doesn't want to follow our policies for replacing plastic housings that can crack after their 5 year lifespan. We can no longer do business with him. He did some google searching and calling other companies, but that doesn't replace real world experience that we have as these housing reach their lifetime manufacturing limit. Our mission is to provide the cleanest water without damaging your home in the process. If a customer like Sean cannot even take personal responsibility for going outside our normal business limits by signing a waiver of liability, then there isn't anything left we can do for him. I refuse to put my business in jeopardy for one customer potentially having water damage to his home. So no, we aren't all about the money because if we were, I would replace his filters, take his money, and bend to his will which didn't happen here. He doesn't have to change the housings after 5 years, but he has to sign the waiver if he doesn't. He is the first customer in the history of my business that has acted in this manner. Read his review again and ask yourself if you were in my shoes would you want a customer like this! He lays it out for you my exact argument but still thinks he is right. - Jose R.Hayward, CA38Aug 15, 2022
I purchased an APEC RO system online and was looking for someone to install it. I messaged a few companies using Yelp, and all of them were unable to install because I needed to purchase a RO system through them.
City Walter Filter was willing to complete the installation. I sent them a photo of my sink, and they were able to give me an accurate quote. Scheduling my installation was easy their customer service is great. Doug, the installer, arrive early and did a great job with the installation. Doug answered all my questions and even hooked me up with a leak detector water shut-off valve, which my system didn't come with. I will definitely use this company again for all my water filtration needs in the future.Helpful 0Thanks 0Love this 0Oh no 0 - R T.San Jose, CA0361Sep 8, 2023
I had got Water Softener and RO system installed by City Water Filter a few months back. Clay (the owner) was very knowledgeable and their prices were reasonable. We have been happy so far. The reason I am writing this positive review is because of their after sales support and service. I had a water leak in RO system which was caught by their leak detector so under sink damage was contained. They were very responsive and Fernando showed up the next day and fixed the connection to get us back on track. He was very professional and went the extra mile to take care of the issue promptly to our satisfaction.
Helpful 0Thanks 0Love this 0Oh no 0 - Diego V.CA, CA05Jun 21, 2023
We have been City Water Filter clients for 4 years now. Very happy with Clay and his team, their quality of work and their constant support. Today we had all our filters serviced by Fernando and he did an amazing job. Also our RO system got its yearly maintenance. Highly recommend City Water and Fernando as a technician. Will continue working with them!
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