In this review, you will learn all you need to know about Watts Premier’s RO-Pure 4-stage reverse osmosis system. As the name suggests, we are looking at an RO system with 4 different filtration stages that provide clean, clear and great tasting drinking water.
The maximum pressure at which the system can operate is 100 psi, while the required minimum operating pressure is 40 psi. If the pressure in your home’s water system is below 40 psi, an additional booster pump is needed.
Let’s get straight to the point: The RO-Pure 4-stage is best suited for smaller households. Why? It’s very compact and was designed to fit under kitchen sinks that don’t have enough space to accommodate larger filtration units.
What’s more, the system doesn’t provide the high water output that some of us might be used to and yet still, 50 gallons per day should be absolutely sufficient for regular use.
The system was tested against NSF/ANSI Standard 58, which not only guarantees contaminant reduction (see above), but also material safety.
Did we mention that the RO-Pure comes with a 3-year limited warranty?
Installing the Watts Premier RO-Pure 4-Stage reverse osmosis system is pretty simple and straightforward – remember that you’ll probably need to do some drilling.
All components are an integral part of the unit, which means that less tubing is required and problems are unlikely to occur. Just follow the provided instructions precisely.
The following video provided by Watts Water Technologies outlines each installation step:
Filter and membrane replacements are extremely simple and fast, as they don’t require you to turn off the water supply and wait for the system to depressurize, thanks to the extra valves built into each filter head.
All you have to do is push a button – don’t worry, easily accessible – to release inside pressure, pull out the old filter or membrane and replace it with a new one, which will easily snap in place. No mess due to water spilling everywhere!
By the way, the fact that you dispose of the whole housing when changing filters makes cleaning the system so much easier.
What are the average lifetimes of the filters/membrane?
Of course, how long each component is going last also depends on your water usage and the quality of the feed water. Overly hard water or high amounts of TDS will likely require you to change them more frequently (especially the pre-filters).
Annual replacement costs? About $80 bucks, which is within the normal range.
Here is what we don’t like:
To be honest, the RO-Pure 4-stage by Watts Premier is not the absolute best reverse osmosis water filter system out there, but it’s good nonetheless.
It will provide you with safe drinking water free from all or at least the majority of harmful contaminants and eliminates the inconvenience of heavy water bottles. Filter/membrane replacements take 30 seconds max without spills and maintenance costs are reasonable, which will help you to save money in the long run.
Our verdict: 4 out of 5 stars!
If you are looking for more detailed RO system reviews, you can find our Top 10 list on the BOS homepage!
And if you have any questions about the Watts Premier reverse osmosis system or any other filter system really, please don’t hesitate to leave a comment below!