The water in a raindrop is one of the cleanest sources of water available. However, rainwater can absorb gases such as carbon dioxide, oxygen, nitrogen dioxide, and sulfur dioxide from the atmosphere. It can also capture soot and other microscopic particulates as it falls through the sky.
The principal contaminants that can be found in rainwater are debris, which includes leaves and twigs, dust and dirt, bird and animal droppings, insects, and other visible material. Although debris obviously reduces the aesthetic quality of the water, it can also pose unseen chemical and biological health threats. For example, leaves and dust can contain unseen chemical contaminants such as herbicides and pesticides. Similarly, bird and animal droppings can contain microscopic parasites, bacteria, and viruses.
Taking into account these possible sources of contamination, we can start thinking in a viable and bio-friendly solution to treat the water. A way to look inspiration in nature, will be using key words as clean, purify and filter.
Water Treatment
In order to be able to treat the water is important first to consider the quality of the input. So, the first question that we could ask is “what kinds of contaminants can be found in rainwater?” which will be our main source for drinkable water.
