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iSpring RCC7 5-Stage Reverse Osmosis Water Filter Review
Best Under-Sink Water Filter

Perfect Water Filtration without the Price Tag!

It’s frustrating looking for the perfect water filtration system isn’t it? If you’re reading this review, I’m hedging my bets this isn’t the first one you’ve looked at, and I feel your pain. I have done an awful lot of research on water softeners and filtration systems, and started to get pretty annoyed about the fact that I didn’t really understand a lot of what I was reading.

This is just one reason why I decided to put this website together. So you could get good, honest and straight to the point information that doesn’t bombard you with technological phrases that just don’t seem to make any sense.

In this review, you’re going to find out about the iSpring RCC7 5-Stage Reverse Osmosis Water Filter System. The name of this product sounds highly technical but there is no need to worry because I intend to make it as easy as possible for you to understand.

iSpring RCC7 5-Stage Reverse Osmosis Water Filtration System
iSpring RCC7 5-Stage Reverse Osmosis Water Filter
See it at Amazon

First of all, I thought it would be a good idea to give you a little information on what reverse osmosis is. Not everyone is blessed with this knowledge so here goes.

Reverse osmosis, simply put, is a way of separating clean, fresh water from the nasty additives that can make the water from your tap look cloudy, smelly and well, not very tasty at all. This is done with the use of a membrane, and the model I’m talking about in this review has one of the best on the market. In fact, it’s NSF certified with the ability to cleanse 75 gallons per day.
I could be more technical about this, but I have done that in a separate section.

So, now that little problem is cleared up, let’s move on to why you might want to consider buying this water filtration system.

5 Stage Filtration

As you may have gathered from the name, this water filter uses five stages and I’ve tried to make these really simple to understand.

  • Stage 1
    At this stage you benefit from a high capacity polypropylene sediment filter which deals with the larger particles in your water until 5 microns.
  • Stage 2
    At this stage, the GAC filter gets to work. GAC stands for Granular Activated Carbon. Basically this is a pre-filter for the next stage, but you can read more on carbon filters here.
  • Stage 3
    Now things really get going with the CTO carbon filter. CTO stands for Chlorine, Taste and Odor.
    As you might have guessed this is where your water is turned into something you can drink straight from the tap.
  • Stage 4
    This is where the reverse osmosis membrane is activated, known as TFC (Thin Film Composite).
    Again, for more information on this process please check this page.
  • Stage 5
    The final stage is what’s called total polishing, and this part of the system will basically ensure that any other total dissolved solids are not present when you turn on the faucet.

Ease of Installation

On first site, this unit might look very complicated but in fact it’s really not difficult to install. It will fit under most sinks, but many people decide to have the main part installed in their basement. Apparently this makes it easier when it’s time to change the filters.

Of course, if you have no DIY knowledge especially with plumbing it might be worth getting a professional to do it for you.

What This Filter Will Remove

Well, the list is endless. I can’t mention every contaminant here or you’ll be cross eyed by the time you’ve finished going through it. However, you can be safe in the knowledge that all types of inorganic contaminants will be removed including arsenic, lead, magnesium and cadmium (as well as a good many others).

The list of organic contaminants is just as extensive, but includes chlorine, herbicides, tannic acids and anything else you wouldn’t want to put into your body.

One Small Consideration

I’m happy to say the manufacturer is very honest about this, because many people worry about the level of pressure when adding a filtration system to their water supply.

What you should know is this unit won’t have any effect in that respect. However, if your water pressure is below 45PSI they recommend you purchase the booster pump for this model, which you can find here).


Having read this far, you may think this type of filtration system is going to cost you hundreds of dollars. In fact, the price will surprise you (hence the title to this review).

If you’re interested in finding out more, and want to allow the whole family to turn on the faucet and drink fresh water, take a look at Amazon. They often have some great deals, and you’ll also find they already have lots of satisfied customers with regards to this product.

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