In this episode of the Water Matters Podcast, host Matthew Rolf unpacks everything you need to know about rainwater harvesting. We cover why it matters, how it works, and the pros and cons of above vs. below-ground tanks. Plus, hear expert tips from the Graf UK team on filtration, retrofitting systems, and the smartest ways to use harvested rainwater at home. Whether you’re a homeowner or self-builder, this episode will help you cut mains water use and make every drop count.