Refillable Water Filters

I’m sure you’ve seen one of these:

A common water filter

And you may have wondered why they’re so expensive. And possibly why they need to be replaced in the first place. I can’t really answer those questions, but I can show you how to save money on replacing them.

You’ll need the following tools:

  • Water filter
  • Exacto-knife
  • plastic or rubber stopper
  • funnel

Using the exacto-knife, cut around the perforated hole in the center of the top. When you’re finished, it should look something like this:

The tools you need: a water filter with the top cut out, a stopper to plug the hole, and a funnel

You’ll also need some activated carbon, preferably a small grain. It is sold in aquarium stores (for water filtration) as well as most home improvement stores and home-brewing stores. This is not the only active ingredient in the commercially available filters, but it does most of the work. If you know where to find ion-exchange resin, email me. A bag of Activated Carbon, purchased from the Home brewing store

Now, put the funnel in the filter and fill until the filter is about half full.

Funnel in water filter, ready to go

Then you can cork it and you’re ready for action!

Ready to cork the filter Refilled Filter, corked Filter in action

Written on September 30, 2014