Melting snow versus collecting rainwater — which is better?

Snowmelt Risks

When melting snow for drinking water, there are several risks to consider. First, snow can be contaminated with pollutants from the air, such as particulate matter and heavy metals, which can seep into the snow and meltwater. These contaminants can then be ingested through drinking the water. Additionally, snowmelt can also be contaminated with animal waste, such as from raccoons or other small mammals, which can also be a health risk.

Rainwater Collection Techniques

Collecting rainwater, on the other hand, is a much safer and more reliable option. Rainwater collection systems can be designed to capture and store rainwater from the roof of a building, and then filter the water to remove any debris or contaminants. A simple rainwater collection system can be set up using a downspout diverter, which redirects the flow of rainwater from the downspout of a roof into a collection tank. The collection tank should be made of food-grade plastic or metal, and should be covered to prevent mosquito breeding and other contaminants from entering the tank.

Storage and Treatment Options

Once collected, rainwater can be stored for later use. The storage tank should be protected from direct sunlight and should be covered to prevent contamination. For drinking water, it is recommended to treat the collected rainwater with a UV filter or a water purification tablet to remove any remaining bacteria or viruses. For non-potable uses, such as washing clothes or flushing toilets, the rainwater can be stored without treatment.