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3M Aqua-Pure AP903 Water Filter

The 3M Aqua-Pure AP903 is a simple, compact whole house water filter that’s more than capable of clearing contaminants from the water and leaving it looking, smelling and tasting great. This is an ideal choice for anyone looking for a basic filtration unit that doesn’t have many frills but can get the job done very well.

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Its simple design doesn’t really mean inferiority in function. It uses a carbon filter that will effectively remove any dirt, dust, and sediments that are as small as 5 microns.

As the water passes through the system, the carbon filter will also remove chlorine and any other funky materials. Therefore, it will provide adequate protection against most contaminants and as well get rid of the unpleasant tastes and odors from the water.

Huge flow rate is also one of the advantages you will enjoy when using this 3M Aqua-Pure system. It has 1-inch inlet and outlet ports which are capable of providing at most 20 gallons of water per minute.

You won’t experience a drop in the water pressure with such a huge flow rate even when using multiple faucets at the same time. It’s an ideal rate for larger homes. Plus the filter has a capacity of 100, 000 gallons which means it will take one whole year before you can replace it.

Considering that it only has a carbon filter, you will need to install a sediment filter to get rid of bigger sediments. This means additional costs but it goes a long way in protecting the mini pores of the carbon filter from clogging hence help prolong its life.

Replacing the filters is also a piece of cake thanks to its simple design and quick-change cartridges. All you need to do is to twist them off, get new ones and twist them in their place, it’s as simple as that. The whole process won’t take more than 5 minutes. No tools needed and it’s virtually spill-free.

You will, however, need some basic plumbing/DIY skills to install it, otherwise, you may have to seek the services of a professional to avoid damaging the unit and having to replace it completely.


  • Great filter that can effectively remove sediments and chlorine
  • Delivers high water pressure throughout
  • The filter has a great lifespan and changing it is quite easy
  • You can use fit for both city and well water
  • All the materials used are FDA CFR-21 compliant


  • May require a professional or some plumbing skills to install
  • Should be combined with a pre-filter and water softener for best results

Our Verdict

Taking into account that, it’s not capable of catching impurities that are smaller than 5 microns, the 3M’s AP903 is not the most comprehensive filter on this list. Still, though, it’s an ideal solution if you are dealing with fairly clean water and you need something that can trap most of the common sediments and reduce chlorine.

Price & Rating

Product3M Aqua-Pure AP903 Water Filter
Brand3M Aqua-Pure
Rating4.5 out of 5 stars
Recommended price(Check the latest price at Amazon.com)

Product Specification

Stages1 Stages
Filters3M Aqua-Pure Water Filter Cartridge AP917HD
Flow rate20 GPM
Capacity100,000 gallons
Max TDS2000 ppm
PressureMin: N/A
Max: N/A
Dimensions6 x 6 x 27 inches
Weight9.8 pounds

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