iSpring US31 3-Stage Under Sink Tankless Drinking Water Filtration System-Includes Sediment 2X CTO Carbon Block Filters (Newest Version)

  • Up to 20X more effective than the common water pitcher dispenser , Feed Water Temperature - 40-100 F
  • Universal 10 inch sediment filter and 2 x 10 inch Carbon block filters
  • Removes sediment, chlorine, and more to produce colorless, tasteless and odorless filtered water
  • Manufactured to comply strictly with FDA standards and tested by independent third party against NSF/ANSI standards (42, 53, 61).
  • Easy DIY installation. Lifetime support from iSpring in Atlanta, GA at (678) 261-7611
  • $135.99
        Eligible for FREE Shipping Orders Over $35 within US 48 cont. states Details    Print Share on Facebook
    • At iSpring, we look beyond technology to make filtered water accessible for all households. We provide our customers with professional water solutions to any water concerns they may have.

      drinking water filter
      Manufactured to comply strictly with FDA standards (CFR-174, 177) and tested by independent third party against NSF/ANSI standards (42, 53, 61).
    • water filtration system under sink

    Why US31

    No more paying to have water delivered, or wasting time replacing low-capacity pitcher filters and faucet filters, the US31 Under-Sink Water Filter provides up to 2000 gallons directly from your tap at a fraction of the cost.

    This 3-stage filter system features dual carbon block filters along with a PP sediment filter. The sediment filter protects and extends the life of your system, while the carbon block filters work to remove many harmful contaminants like chloramine, chlorine and more.

    Highlight Features
      • sink water filter
      • water filter
    • under sink water filter
    • water filtration system

    Product Description

    This 3-stage filter system features dual carbon block filters along with a PP sediment filter. The sediment filter protects and extends the life of your system, while the carbon block filters work to remove many harmful contaminants like chloramine, chlorine and more.
    • Availability: In Stock
    • Model: US31
    • Manufacturer: iSpring
    Dawge | 5 out of 5 Stars!

    Update 6/23 - replacement fitting arrived and installed in minutes. No leaks so far. We primarily bought it to filter out random sediment found in our water which we use a zero filter water pitcher but was getting tired of refilling. NYC Tap water is generally great so we weren’t looking to alter taste. As a note, we replaced the third stage with a 1micron filter to help take out any lead just in case. It seems to work well. Water flow is very good (it sputters because of the filter) and the taste ever slightly different. Due to the new replacement filter the TDS is higher than the zero water but we read the process to remove lead replaces it with other minerals increasing TDS levels. Looking forward to seeing the stage 1 filter get dirty through the clear plastic housing to remind us why we went this route.Disappointed we had to wait a week to use this but happy the response was quick from the seller. Things happen so we’ll chalk it up to that. Happy with the purchase and product. As a note, install was into a 24 inch IKEA sink with sliding drawer front. It was a tight fit but it fits without interfering with the drawer. Update 6/18- Nick from iSpring contacted me first thing this morning to let us know a replacement fitting is being sent. We are super excited and eager to get rid of our water filter pitcher and have high hopes this is only a speed bump. We purchased the ice maker kit and installed that while we wait. 6/16 (Saturday PM) Okay, so I do not hate it because I haven't used it yet. I just hate that it arrived with a broken water faucet elbow/fitting which basically makes the system a paper weight until I get a replacement. I've contacted the seller to request a replacement and will update this once they respond. On the flip side, the system installed in less than 30 minutes with the most effort used towards getting under the counter to secure the water faucet from underneath. Instructions are brief and not well laid out but all the components are fairly well laid out which allows the install to be manageable. instructions could be a bit more organized and broken down but install is logical if your have minimal experience. The connections appear secure but I won't be able to test for leaks until I get that replacement part. So close...yet so far away. One of the primary reasons we choose iSpring is the clear housing and it doesn’t disappoint in terms of look. We have a lot of rust and sediment so we are concerned about swapping out the sediment filter in time to not impact stage 2 and 3.

    Big Boy | 5 out of 5 Stars!

    This is in our system that we installed under our sink cabinet in order to reduce or spend on purified water. under hundred bucks if we could install such an oral system that lasts for years we will save up all the money within the first one year and we get all the returns on our investment. having said that I also have to mention something about the installation process this has. it's a very simple installation process and we could easily figure out by looking at the system itself that all we have to do is just insert one inlet hose and one outlet hose and connect them to the main water system.To connect to the main water system they also included a wall which is ready for suitable smaller hose integration. That is ample length of smaller hose that fits right into the filtration system has been included in the package which I could cut into two pieces as needed. So all I had to do was unscrew the existing wall of the main cold water inlet of the sink and put the T valve in place of it. On the outlet they also included a beautiful fingerprint resistant faucet that I could mount on the sink in place of the existing water sprayer. I connected another smaller house that I cut from the full reel of hose to this faucet and the filtration system was ready. I was amazed at the quality of the water that this filtration system generated as it read wonderful pH results. I am super satisfied that I am getting completely purified water. I don't have to rely on the bottles from outside anywhere. This is a three stage RO system. The first stage itself most of the impurities are filtered out as the first filter is the sediment filter. if any impurities are there those will be filtered our in the next two stages and purified water is yielded through the faucet. For the budget it's the best RO system that we would find with simplest installation process.

    Robert J. Bosak | 5 out of 5 Stars!

    This is the third water filtration unit I have purchased and am now kicking myself was not the first. First off this three stage unit comes with such explicit directions probably a two year old could install it. Next this unit comes with a cutoff for the system itself which is what truly inspired my review. See the previous units I suppose never anticipated problems can occur or even the simple fact of changing the cartridges so they never supplied a cutoff for the filtration system. This leaves you having to turn off the original cutoff for your cold water which leaves you dead in the water for using cold water in your kitchen sink. I suffered that fact with the unit this Ispring 3 stage replaced. Due to one of the hoses breaking we were left without cold water in our sink for two days. The fact this company reacted quickly and we received the unit so fast prevented it from being 3 days! I had the opportunity of trying the cutoff valve as one of the hoses for the outputed purified water goes to our refrigerator. Well I was stupid as I should have cut an inch off the hose since it was the original. So it was leaking, I immediately used the new cutoff and it stopped it immediately. I guess we are all human, make mistakes and is something ISpring really needs a commendation for having that ability to understand! Replacing the cartridges is going to be a total joke since each one unscrews very simply. Not only that, the cost is $20. I paid $110 for the replacement cartridges for the last 3 stage unit I had which failed a month after that replacement. So you bet I am kicking myself for not purchasing this ISpring 3 stage before that kind of a loss. The amount of hose that comes with it is extremely generous and I believe someday I will replace the old refrigerator line. Thanks for being a company that makes product that makes us all happy instead of confused and upset. I wish one day others will follow in this manner of greatness

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