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    One Water Systems

    4.5 (70 reviews)
    Closed 9:00 am - 5:00 pm

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    Response time

    10 minutes

    Response rate

    100%

    Services - One Water Systems

    Water purification system cleaning and maintenance

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    High magnesium and calcium (hard water)

    One water promised soft water but their products did not deliver that promise. We purchased their elite 15 system + the additional Central water descaler. Both were recommended to achieve softer water. The water is so hard, I'm unable to wash my hair properly. It feels extremely sticky/waxy after washing my hair due to the calcium and magnesium in the water. I've been having to wash my hair with distilled water, which helped however is extremely inconvenient. With further research, I came upon a salt water shower head, which worked! We've tested the water with testing strips and it shows the water is extremely hard, with the one water systems installed. Extremely disappointed, as we spent thousands of dollars promising soft water but promises were undelivered. Yes- we had one of their technicians check on the system to make sure it's running properly and he said it's good to go.

    Water testing
    Tore D.

    2 years ago, we purchased One Water Systems. It's not cheap, but we are very happy with both the product and their yearly no charge testing. The big advantage is that it's maintenance free. It comes with a 15 year warranty and they come back every year to check on it. And we don't even have to wipe the shower panels, they dry clean! We highly recommend One Water Systems.

    One water system installed in June 2010
    Nagib S.

    I find Kevin's response full of inaccurate statements and false info, first of all there was NO misunderstanding on my part, he was only interested in selling me a new system for $3300, never offered to "try a rebuild for a small fee$900", how could he while he stated in his reply that "equipment is broken and it cannot be repaired with the same components" ! In addition, his tech conducted only 9 check ups or services, not 11, for due to Covid-19, there was no service in 2020. I offered him $2800 for the new system, but he refused, and that's the honest truth! I don't harbor any animosity toward Kevin or want to hurt his business, rather simply and honestly provided feedback on my experience, and wish him and his employees well.

    Me and my hair
    Erin M.

    I have always wanted a whole house water filter mainly for my hair. I noticed after living in Switzerland for 10 years when I came back to the USA my hair was horrible, no matter what conditioner i tried it was always tangled, hard to comb out and just felt and looked horrible and I knew it was because of the crap in the water. I have long hair and I was always wearing it up. Now its such a huge difference with the filtered water. My hair is shiny and soft and no more tangles. People that know me made comments about my hair looking soo great my hair dresser also noticed a difference. Its also nice to be able to drink the water from the tap. I would definitely recommend.

    One Water Whole House Purification System

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    4 months ago

    Love their FRESH and CLEAN water. Bought one for our new home too. Also buying one for our daughter and her family. Drew is such a nice guy!

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    Page 1 of 2

    Ask the Community - One Water Systems

    Hi! I love my one water system. The water is delicious compared to other bottled water. I'm becoming very particular. LOL! Please give me details on your air filters. I know…

    I know I love my system too! I would call the office and ask about the air purifier. I've been thinking about getting one of those too. I've heard they are good when we have fires

    Don’t See Your Question? Ask Away!

    Review Highlights - One Water Systems

    I send a text to Kevin the owner ( Who I ad A personal fallout not related for the unit).

    Mentioned in 24 reviews

    Read more highlights

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    All Cities Water Treatment recently installed a whole house filtration and water softener, along…read morewith a reverse osmosis system for drinking/cooking water. We had a very challenging situation for the installation, with our water main coming into the house on the front porch, irrigation pulling off after the water comes into the house, and a tankless water heater on the side in the back. Jaye expertly analyzed the situation and recommended the best possible solution in terms of functionality, appearance and cost. Eddie and Jesus were an amazing installation team, first verifying the optimal installation layout (confirming Jaye's analysis), then completing the installation in a thoroughly professional manner. We highly recommend All Cities Water Treatment and are very happy with our decision to work with them.

    We had All Cities Water replace a Puragain water filter system that we had installed in 2022. The…read moreoriginal system did not address the hard water issue that we have been having and it continually clogged up, requiring routine (expensive) maintenance to replace the filters. All Cities did an excellent job of explaining the options and going through how a salt-based hybrid softener system would provide the water quality we were hoping to achieve. I asked a ton of questions, all of which were quickly and thoroughly answered. There was no attempt to upsell us or talk us into anything. It was a very low-pressure engagement that made everything much simpler. We ended up going with a hybrid salt system that uses carbon and sodium chloride to condition the water (it can also use potassium chloride but the cost of that is prohibitive at this time). The installation went very smoothly. We were told it would take about 4 hours to remove the old system, install the new one and run a drain line across the garage to the sink. That is almost exactly what it took and the installer was very professional and easy-going. We are very pleased with the system thus far and I would highly recommend All Cities Water Treatment as a great option for anyone interested.

    Diamond Pure Water Filtration

    Diamond Pure Water Filtration

    (455 reviews)

    Was researching for months to find the best and most cost efficient soft water system. My coworker…read moretold me about this place so I called to request a quote. The lady that answered said she would forward my info to an Oscar. Oscar called me about an hour later and went over the entire system and the cost. His price was about $500-$1000 cheaper than local competitors. With good pricing and probably the best yelp reviews I decided to go with him. Installation was about a week later. The installer came around 11am and took about 8 hours to install the entire system. His install time too longer than originally quoted but I'm glad he took his time and didn't miss any steps. When it was all done he educated me on the entire system. It's pretty much a set it and forget it system except for maintaining certain salt levels. Within days I felt the difference in my skin. It wasn't as dry as before and the water really did feel soft. Highly recommend them!!

    The water quality has significantly worsened in just over half a year. When I contacted this place…read moreabout the issue, they only performed a basic water softener test and then advised me to take my water somewhere else for a proper water quality test. Water seems soft but it doeant seem to remove any other toxic elements no more or does less This was especially disappointing because they advertise that these tanks should last 5 to 10 years. Based on my experience, the performance declined much sooner than expected, and I did not feel like the issue was taken seriously or properly evaluated.

    The Goodfor Co Plumbing & Water Filtration - Puronics Defender B Installation in Poway

    The Goodfor Co Plumbing & Water Filtration

    (33 reviews)

    I am extremely disappointed with my experience purchasing a water filtration system from Puronics…read morethrough The Good For Company. During the sales process, we were clearly told that the system being sold to us would filter the water for our entire home. After installation, we later discovered that this was not accurate. The system does not fully filter the water as represented, and we were informed afterward that a reverse osmosis system would be required to properly filter our water to the level we expected. This was never clearly explained to us before purchase. In addition, the long-term service and maintenance costs were not disclosed. We were not informed about the recurring service requirements or the cost of maintenance that would occur every few years. These are significant expenses that absolutely should have been disclosed upfront. We feel we were misled about both the capabilities of the system and the true cost of ownership. Transparency and honesty are critical when making a large home investment, and unfortunately, that was not our experience. I hope this review encourages the company to be more upfront and transparent with future customers about what their systems actually do and the full scope of ongoing costs. But with that said, I do not recommend this company for filtration or water softening. Update: In response to Boris z. Thanks for the detailed reply. However, it still does not address the issue. We are not disputing the equipment installed or the service dates. The concern is how the system was represented during the sales process. Most homeowners are not water treatment professionals. We relied on your company to explain, in plain terms, what the system would and would not do. That did not happen in a way that allowed us to make a fully informed decision. Regarding maintenance, the issue is not that the systems require service. The issue is that the scope and cost of that maintenance were not transparently outlined upfront. Learning years later about substantial service fees, replacement costs, and price increases is very different from being given a clear picture of long-term ownership costs before signing a contract. Saying the system "operated without issue" misses the point. Functionality is not the same as full disclosure. Additionally, your response references specific account details despite this being a general public review. Given that the system is not even under my name, it is concerning that internal records are being used in a way that attempts to publicly attribute and rebut a customer review. That approach feels less like clarification and more like an effort to discredit my experience rather than address the concern. Providing brief technical support on an alkaline filter does not negate the larger issue of sales transparency. Although, you or whoever we spoke to did mention working on some sort of discount towards service or replacement filters. With that said, our review reflects our experience. We hope this review helps future customers so they are given clearer explanations about system capabilities, limitations, and total cost of ownership before making a significant investment.

    A representative door belled during the work day and I wouldn't have opened the door. However, he…read morestarted to bang on our door very loudly afterwards. I rushed to the door, try to politely inform the gentleman that I was not interested at this time. He was rude and wouldn't take no for an answer. He was berating me with questions like, "do you not care for this?" This was extremely unprofessional. I politely informed him that I am, again, not interested at this time and would like to research on my own for the time being. He was reluctant in leaving. This negative review is based solely on the encounter this afternoon. Though, if this is any inkling of how the company conducts business with hiring these kind of salespeople -- then hard pass.

    One Water Systems - waterpurification - Updated August 2026

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