Certified by De Anza Water Conditioning, Inc • Mar 08, 2026
Water Purification Equipment
Almost four decades ago, founder and president of De Anza Water Conditioning, John Schafer, entered the water treatment business with a California State Contractor’s license, combined with a wide and deep understanding of water— the benefits of its best and the challenges of its worst. To compete in this industry, John knew that he needed to provide customers with unique and special solutions.
He chose to build his business on the strength of Kinetico Water Systems, supported by a highly specialized technical team and supportive, knowledgeable office staff. Our goal is to satisfy the need of each customer, providing a customized solution for each water problem.
We invite you to join our family of more than 10,000 satisfied customers, from San Francisco to Monterey, including residences, apartment complexes, car washes, manufacturers, fitness centers, golf and country clubs, hospitals, hotels and motels, industrial boilers, laboratories, nursing homes, restaurants, universities, custom and town homes, and wineries.
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Certified by De Anza Water Conditioning, Inc • Mar 08, 2026
Certified by De Anza Water Conditioning, Inc • Mar 08, 2026
Reviews
4.9
797 reviews
5 stars
774
4 stars
13
3 stars2
2 stars1
1 star7
SP
Satya Peri
3 days ago
5.0
We are extremely pleased with the service provided by Sonny Vigil, the technician who installed our new Water Softener System from De Anza Water Solutions. Sonny was very punctual for his appointment at our home for the installation. He demonstrated a professional demeanor and a highly skilled aptitude in completing his tasks. The system was installed effectively and in a timely and clean manner. On completion Sonny took time to explain the various components of the system and the maintenance requirements and schedule. Thank you Sonny for a very positive experience.
We are extremely satisfied, as an existing customer, with De Anza’s support for the sales, ordering and installation processes for our new system.
SM
Susan McKeen
Mar 4, 2026
5.0
Kai was an awesome technician Not only was he v polite and patient as we had to wait for a code to access area from my landlord, he was also knowledgeable and informative about ongoing schedule of maintenance Also the young woman in billing was also v kind & understanding that I had no idea I was responsible for the billing & forgave the late fees which I was extremely grateful for. Highly recommend De Anza Water Conditioning to everyone
MS
Memo Sala
Feb 28, 2026
5.0
Overall De Anza Water Conditioning was easy to contact and the sales rep Raoul, was responsive to all of my questions. On the day of installation, Tomas and Benjamin did an excellent job on installing my softener system. All of the plumbing was nicely hidden behind the tanks and even the hose bib was placed at eye level which is great when you have small children. They went over everything before they started and were receptive to my requests.
BI
bilal ilter
Feb 27, 2026
1.0
I had a very disappointing experience with this company.
I scheduled service for one of my projects on Wednesday. I was told they would call me back the next day. I followed up, and again they said they would call me in the afternoon — no call ever came.
They mentioned the service manager, Taylor, would reach out. It has now been more than two days, and I still have not received a simple response.
I confirmed my Friday appointment (12–2 PM window) and even called at 8:30 AM that morning to verify. I was assured someone would be there. I waited for two hours — no one showed up, and no one contacted me.
As a contractor managing active projects, communication and reliability are critical. Unfortunately, this company failed in both areas. I cannot recommend them based on this experience.
PF
Philip Fulmer
Feb 26, 2026
5.0
We have been De Anza Water Conditioning customers for over 14 years, first with a reverse osmosis water system and very soon afterwards with a water softener.
After 14 years, we heard a very random high pitch whine randomly from our RO system. Kai came out took a long, and fortunately heard the same sound. He made a few phone calls and suggested that they might know what it is but an attempt to repair is highly unlikely to succeed given the age of the unit and how infrequently this occurs. Given that the unit was 14 years old, VERY heavily used by us, we opted for a replacement.
Fortunately for us, Kai had one in his vehicle and installed it immediately.
I feel confident with De Anza Water Conditioning that we are getting both a great product and long-term service to go with it. Everyone who has visited our home, including, Kai, has been super professional.
Frequently Asked Questions About De Anza Water Conditioning, Inc
What services does De Anza Water Conditioning, Inc provide?
De Anza Water Conditioning offers customized water treatment solutions using Kinetico Water Systems to address various water quality challenges for residences and businesses.
Where is De Anza Water Conditioning, Inc located?
It is located at 355 E McGlincy Ln, Suite H, Campbell, CA 95008, USA.
What are the business hours of De Anza Water Conditioning, Inc?
They are open Monday to Friday from 8:00 AM to 4:00 PM and closed on Saturdays and Sundays.
How can I contact De Anza Water Conditioning, Inc?
You can reach them by phone at +1 408-371-5521 or email at customer@deanzawater.com.
What payment options are accepted by De Anza Water Conditioning, Inc?
They accept American Express, Cash, Check, Discover, Financing, Mastercard, and Visa.
Since when has De Anza Water Conditioning, Inc been in business?
They have been serving customers since 1979.
What areas does De Anza Water Conditioning, Inc serve?
They serve customers from San Francisco to Monterey, including various residential and commercial clients.
What nearby automotive services are close to De Anza Water Conditioning, Inc?
Nearby automotive services include Driven Auto Care, Pumphrey and Co., and Walt's Auto Repair and Air Conditioning, which can assist you if you need vehicle maintenance before or after visiting De Anza Water Conditioning.
Are there any nearby fitness or gym facilities near De Anza Water Conditioning, Inc?
Yes, Sensory Speed and Fitness Movement gyms are nearby, offering options for recreation and fitness around your visit to De Anza Water Conditioning.
What other home-related services are located near De Anza Water Conditioning, Inc?
Nearby you can find Bellows Plumbing, Heating, Cooling & Electrical, BBK Plumbing, and Summit Remodeling Co Inc, providing complementary services like plumbing, HVAC, and home improvement.
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