APEC WFS-1000 3-Stage Under Sink Water Filter System Review

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APEC’s WFS-1000 under sink water filtration system can be used to treat tap or properly disinfected well water.



Filter Stages:3
NSF Certifications:
Annual Cost:$
Warranty:1 Year

Our Rating

APEC WFS-1000 Under Sink Water Filter – Key Features

3 filter stages help you get rid of sediment, dust, particles, tastes, odors, chlorine, volatile organic compounds and other chemicals:

  1. At stage 1, a 5-micron polypropylene sediment filter traps sand, dirt, rust, etc.
  2. The second stage features an activated carbon block filter which has shown to exceed at removing free chlorine, VOCs and other filth as well as greatly improve how your water tastes, smells and looks.
  3. Same as 2.

As you can see, by default the system uses identical filters in housings 2 and 3, which is why you might want to consider upgrading one of them.

One of your options is a specialized fluoride removal cartridge, the WFS-1000-FP, that also takes care of bacteria. According to APEC, the filter reduces fluoride from 0.5 parts per million to less than 0.1 ppm.

How? It makes use of granular activated alumina media, so basically an oxidation process.

In addition, APEC has introduced the WFS-1000-PB carbon filter for lead and bacterial removal.

The filter meets the requirements of NSF Standard 53 for over 2,500 gallons of water at 0.75 gallons per minute flow rate. In other words, effective lead reduction is guaranteed under those conditions.

The last optional upgrade is the WFS-1000-CHLORM designed for water supplies that use chloramines instead of chlorine for disinfection. Apart from chloramines, the catalytic GAC also takes care of hydrogen sulfide by oxidation. One cartridge can treat as much as 1,500 gallons.

Whichever option you choose, all filters are made in the USA.

Required feed water pressure: Between 20 and 85 psi.

WFS-1000 Pros

Other advantages that the APEC WFS-1000 provides are:

  • Essential minerals are kept in the water adding to your daily nutritional intake.
  • The flow rate is fast enough to avoid long waiting times.
  • The system is backed by a 1-year satisfaction guarantee with U.S. based support by certified WQA water specialists.

The APEC WFS-1000 – learn more on amazon.com

System Installation

Please note: When installing the WFS-1000 you need to avoid exposure to hot or cold temperatures and direct sun light.

Even if you are not a trained do-it-yourselfer and haven’t done much plumbing before you should be able to get the system up and running within 1 or 2 hours.

The setup is pretty simple – also thanks to the quick connect fittings – although directions might be a little confusing at first.

Parts List

  • System head
  • 3 filters + housings
  • Food-grade, color-coded tubing
  • ½” or 3/8” feed water adapter
  • 360° rotatable lead-free faucet with adapter, washers + nut
  • Housing wrench
  • Teflon tape
  • Manual

Filter/Membrane Replacements

Compared to other under sink units, those that come with the WFS-1000 have an increased capacity for up to 12 months of refreshing and clean drinking water before they need changing – less maintenance work for you.

If you receive your water from a private well, however, replacement might be required sooner due to higher sediment and other particle levels.

That being said, replacing the filters is a matter of minutes:

  1. First, turn off the water supply to the system.
  2. Open the dispenser to release pressure from inside.
  3. Remove all three filter housings.
  4. Discard the old filters, clean the housings with mild soap water if need be, and insert the new cartridges.
  5. Screw the housings back on making sure that O-rings are properly seated.
  6. Turn on water supply.
  7. Check for leaks.
  8. Done!

Annual replacement costs? Pleasantly inexpensive.


To access the official manual click here: Manual

WFS-1000 Cons

For more severe cases of contamination this under sink water purifier won’t suffice. We are also missing NSF certifications for contaminant reduction rates.

What’s more, some customers complained about the faucet being too flimsy and therefore hard to tighten on the sink or countertop making it prone to leaking.

APEC WFS-1000 Review: Our Verdict + Best for

The APEC WFS-1000 is best for giving your water a finishing touch, mainly handling taste issues. So if that’s what you are looking for by all means go for the APEC WFS-1000. It does what it says and because everything is standard-sized you can choose from a wide range of aftermarket replacement filters.

All in all, you get great tasting drinking water at an affordable price. 3.5 stars!

By the way, because we read so many complains: The APEC WFS-1000 does not reduce TDS which is not necessarily a bad thing. We don’t consider TDS a good method for measuring drinking water quality.

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This completes our APEC WFS-1000 review. If you have any questions please don’t hesitate to leave a comment below!

About the Author Gene Fitzgerald

Gene Fitzgerald has been with BOS since the very beginning. She is head of content creation and has fully immersed herself into the home water treatment industry only to become an expert herself. Outside of BOS, Gene loves reading books on philosophy & social issues, making music, and hiking.
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