There are few objects more universal, more overlooked, and more revealing than the toilet. From the stone drains of Minoan palaces to NASA’s space-age thrones, this book traces how every great leap in human progress began not with monuments or machines, but with waste, water, and the will to stay clean. Archaeologists, engineers, reformers, and dreamers all appear here: Arthur Evans kneeling in Cretan dust to uncover a 4,000-year-old flush; Sextus Julius Frontinus defending Rome’s vast aqueducts; Dr. John Snow mapping cholera in London; and the uncredited workers whose daily labor kept civilization running. Combining narrative nonfiction with cultural history, The History of Toilets reveals how a small civic technology became the foundation of public health, urban design, and even democracy.