How To Make Water Filter At Home

In this article I will explain the different stages of a filter to purify water. To understand everything better I will lean on a video in which we will see how to manufacture a home water filter. A little DIY and general bodybuilding to start the year!


How To Make Water Purifier At Home

A lot of people write to me wondering about water quality, about filters and pretty worried about their health.

And rightly so…

The issue of water is something that we often neglect, but that can be the source of many health problems.

If we care about going to the gym, eating healthy, breathing fresh air, etc., it makes sense that we give importance to the water we drink.

Well, I have set out to write a simple “digest” article to start the year where you will easily see how a basic water filter works, so that you can understand the basics of filtration.


Homemade water filter with charcoal

I was going to make a video of my own to show you the process, but I’ve seen that Youtube is full of information to make home water filters (some videos are not highly recommended)

So I selected one that I found quite interesting from the NGO Water Wells For Africa (WWF).

The video below (10 minutes approx.) shows how to make a homemade filter of charcoal water.

Take a look and then I’ll tell you some details:

As you can see you can filter a water that is in poor condition and make it suitable for human consumption with this low cost process.

Some considerations:

  • This type of filter is suitable for emergency, survival or in places where there is no water supply.
  • To make the home filter a little more effective, I would include overlapping layers of gravel and sands of different granulomas (sizes), before the carbon layer.
  • Microbiological contamination is not completely eliminated through a filtering system. Further disinfection is required.
  • In this case it uses the SODIS method, which uses UV radiation from the sun to disinfect water. Ideal for this method would be to avoid plastic bottles and use clear glass (the sun degrades plastics and can transfer harmful substances to consumer water).
  • Other ways to disinfect water after planting maybe by adding chlorine (bleach suitable for disinfection of water or water treatment tablets) or boiling it.
  • This filter is a basic example for viewing the different filtration stages. A commercial filter is based on the same principles, but they are much more efficient.
  • They use a common charcoal here. Commercial filters use active carbon filters of excellent grades (the best come from coconut shell charcoal).
  • Active carbon is an excellent “adsorbent” (different from “absorbent”) due to its microporous structure that offers a large surface area of contaminant retention.


Commercial filters of active coal

If you’re a handyman and like DIY, you’ve already seen that you can easily make a filter. You have a lot of formats and options on Youtube.

But if your home is connected to the water network, my recommendation is that you do not complicate your life and install a commercial filter that fits your needs.

And when I say “your needs,” I mean a filter that removes harmful contaminants that your inlet water can bring.

No more, no less.

If your water is drinkable,urban grid and comes disinfected (with chlorine normally), an active carbon filter will suffice.

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