ZeroWaterReviews of zerowater.com

Think carefully. Long-term user who has now sadly learned the error of my ways. You buy these filters in advance of usage with an enticing offer of increasing discounts offering an incentive to stock up. There is an inherent risk in this. They pre-soak the filters and seal them wet and they can develop bad tasting water even though they measure “Zero”. You will of course only discover this at some time in the future when you open and use the cartridge. If however your cartridges turn out to be faulty and you contact them they will only consider a refund if you find the fault within 30 days of purchase. I have over £150 worth of rubbish filters because I didn’t know that they only guarantee the filters for 30 days FROM PURCHASE. They of course know that their customers will not unseal ALL of their new filters within 30 days and so they essentially do not offer any practical guarantee. They know this but of course it would never occur to a customer - except when they find some duds. I do not call this integrity, so be aware.

Zero water has changed their hard plastic covering the filter to a cheap plastic cover. When you pull the black cheap plastic off which is difficult by the way a lot of it gets left on the rim of the filter and I find it hard to get off. I have to scrape it off with a knife and what's left messes with the fitting. Can you please go back to the original screw one .

1/12/2026 UPDATE: After I posted this review, I went to the Culligan/zero water customer service site looking for an email address. Which I found and I in essence posted my review to customer service. They actually responded back to me, apologized and sent me two new filters which arrived today. Right now I feel as though customer service was given, and I’m happy with the outcome. I purchased zero water because I trusted Culligan. I liked that it advertised particular removal and taste improvement. The first filter I had which was included in a box that I bought the countertop container worked fine. I was very happy although I did think it lasted less than a month and I’m one person. I purchased a pack of two replacement filters paid a little bit more than $40 total and neither one of them perform like the first. I followed all troubleshooting suggestions from Culligan and zero Water sites. I submerged it for 15 minutes totally to try to get air out of both in the event that there was air because that was suggested. I rinsed and re-soaked refilled, and still had the same taste of carbon or metallic. The filter gauge attached to the countertop dispenser said 000 for both filters after both problem-solving. It’s still tasted awful. Never thought to be more prudent in looking for a guarantee or warranty, but I was told there’s a 30 day guarantee for the filters, but you have to have your receipt. I should’ve just stuck with Brita.

Listen to all of the other reviews. First filter lasted 3 weeks, it is now down to one filter a week. I live alone and drink 24 oz per day. At 27ppm the water tastes terrible. I will use up the rest of the filters and toss the large capacity tank I purchased. Going back to Lifestraw

The replacement filters used to come with a blue cap on top. Now it comes with a plastic seal. This is so hard to get off and leaves plastic particles in the top of the filters. It has taken me about 10 minutes to remove most of it. I can’t get it totally off. Please go back to blue caps. Much easier and cleaner to remove.

I live alone and drink approx 1.5-1.8 litres per day after 2 weeks water has a distinctly unpleasant taste. The TDS meter reading is 001, so should be okay to use. This now seems to be a constant problem with these filters. I've been using zero for a few years. I'm sure they are now made to last a lot less than before. I'll buy a table top reverse osmosis device & ditch ZeroWater

Well I should have listened to the recent reviews. The filter lasted 2 weeks. It’s very expensive, it went up on price. I’ve been using zero water for a few years, I have never come across this problem before. Before it would last about 2months. They are trying to make more money, but actually they’re going to lose customers. I am currently looking for new options. I feel cheated.

I would give a BIG Zero stars if i could. This company is horrible. I bought the Extreme Life filter that attaches to your sink faucet. It cost me 80 dollars. Before my filter needs replacement I thought I will order some more filters. The product is already discontinued without notice and now I am stuck with this product. What a waste of money. I called customer service and they don't care at all and wouldnt even offer to replace it with one of their cheap pitchers or other product. This is a horrible company. I will never purchase anything from this company again. What a very bad experience.. Zero stars.. and certainly Zero Customer Appreciation.