EVERY DROP The rainwater playbook

EVERY DROP is a 148-page, full-color textbook that explains how to capture, store, treat, and use rainwater, taught the way real engineering deserves to be taught. It opens with the science-the water cycle, the math of how much a roof actually yields-then moves systematically through the hardware: roofs and gutters, first-flush diverters, rain barrels, above- and below-ground tanks, sizing for a household, gravity head and pumps, irrigation and indoor/potable use. Later units cover sensors and automation, solar-powered systems, and the U.S. laws, incentives, and backflow standards (including ICC 805) that shape what's legal. A standout Chapter 22 surveys the world's ground-based and traditional methods-sand dams, johads, Brazil's cisterns, Australia's BASIX scheme-each illustrated with original engineering diagrams. Every core concept follows a Fact → Breakdown → Interpretation → Context structure, and each unit ends with worked examples, key terms, and review problems. The book finishes with a complete worked build for a 2,000 sq ft home in the Houston/Southern Plains region, plus a glossary and a real-sourced bibliography. Roughly 43,000 words, aimed at readers 12-17 and the adults who learn and build with them.Key facts at a glance- 148 pages, 8.5 × 11, full color, 43,000 words- 22 chapters in 6 units + Builder's Supplement + appendices- Fact → Breakdown → Interpretation → Context teaching method- Original engineering diagrams throughout; worked examples, key terms, review problems, unit assessments- Current U.S. law, incentives, and ICC 805 backflow standards- Complete worked build (2,000 sq ft, Houston/Southern Plains)- Audience: ages 12-17 and adults- UGK Publications - Hidden Infrastructure Series