In this special wrap-up episode of Waterfall, Mike Keil is joined by CCW’s Catherine Jones to look back on Season 5 and put their guests’ water-saving claims to the test. From academics and campaigners to water industry experts, they rank the season’s guests by their actual daily water use, revealing who really walks the walk when it comes to saving water. Along the way, they revisit standout moments from the series, share personal water-saving confessions, and show that cutting water use doesn’t require big lifestyle changes - just small, achievable tweaks that add up. Timestamps 00:00 – Welcome and overview 01:00 – Measuring water use 02:25 – Guests and water awareness 08:00 – Mid-table rankings 15:00 – Top 10 water savers 22:35 – Top 5 revealed 28:35 – Season’s top saver 29:35 – Mike and Cath’s water use 33:45 – Season 5 highlights 35:35 – Final thoughts and resources