r/zerowater

Hey there, I have been trying to get some valid info on the older Zerowater vs the newer Culligan branded stuff. Obviously they are both under Culligan and even though they kinda leave the regular Zerowater with older containers and name brand, I read the filters have changed and Culligan kinda ruined the entire show regardless of which you buy...

I was hoping people with their own experience or some reliable links could show me how they actually compare to each other. I bought a Zerowater Legacy style AND a Culligan version, both are unopened at this time. I was planning to return one of them. So far the Culligan is more cups for less $ and the supposedly better dispenser design over the push button classic style.

I mostly want to know the most important part, the filters. What filters are lasting the longest? What is your actual experience, is there any notable taste or benefit to the Culligan (they say it's improved). I read some people have the fishy sour taste in the Culligan filters more than the OG Zerowater filters? Any one have both?

Honestly thought about just going PUR/Brita potentially; really have no interest in 2-3 week filters if that's how it's going to be. Let me know what you think. Thanks!

I have a Zerowater 32 cup dispenser that I use for my CPAP machine. I fill up the dispenser about once per week. The dispenser is kept in a closet in my bathroom. I pour water into it using a pitcher from the sink.

My normal tap water is around 100 TDS. I have used the dispenser for a very long time without the TDS going above 0. I'm thinking more than a year.

Is there some time limit where I should be replacing the filter even if the TDS isn't rising?

Is there some amount of time I should be cleaning the dispenser and top? Do I replace the filter at the same time, or can I just keep it moist somewhere?

Update: My CPAP uses about 10oz/day of water. 2.3 gallons/month.

I'm thinking of cleaning once/month and then changing the filter after 6 months. I guess I'll taste the water every month and see if it tastes fishy.

Hi all, wasn’t sure where else to post this. We’ve had our pitcher for about a year now and we love it. I am familiar with how the flavor changing seems to indicate when it’s time to change filters. Currently, our water is reading at 0PPM but as soon as I pour it into my metal tumbler it’s reading at 16PPM. I have washed my tumbler at least 3 times now, wondering if maybe that was the issue but it’s still tasting funny as soon as it hits my tumbler. I’ve noticed it tasting off when it’s been poured into a clean glass (which then reads as 1PPM) but the flavor is not nearly as noticeable/offensive to me as when it’s in my tumbler. It’s sort of an earthy flavor, I’m not sure how else to describe it. The water that has just come through the filter and is sitting in the pitcher is reading at 0PPM. My mom hasn’t noticed any funny flavor in her own tumbler which is also reading at 0PPM. Does anyone have any idea what might be causing this? Thanks in advance!