I’m thinking about adding a rain collector to use in my garden but I have some concerns about construction materials.

One concern is that I’m not a huge fan of using a plastic container to store water. The idea of water sitting in a plastic barrel that could be exposed to heat from direct sunlight doesn’t fill me with excitement. I was wondering what other materials or containers I could use that might be better for storing rain water. One idea I had was to modify a metal keg to collect water. They would be smaller but I could use multiple if I wanted.

The other concern I have is about roofing materials. Is it safe to use water collected from a roof with shingles in a garden for vegetables? I’m wondering if there might be any run off from the materials used for roofing.