We’ve seen many of our freshwaters become unswimmable in just a couple of generations. How can that have happened? In his new e-book, Squandered: The degredation of New Zealand’s Freshwaters, Dr Mike Joy describes how our waterways have become degraded by sediments and nitrate pollution, how our aquatic biodiversity is being lost and how how our soils have become contaminated with heavy metals. “Dedicated to all parents who grew up in swimmable rivers”, this is a must-read for anyone who cares about our waterways. It’s free and available at www.waterqualitynz.info.