Water Waste: Ending Water Losses, a Global Priority

Water loss in supply networks has become a critical global issue, with worldwide losses exceeding 40% of potable water, enough to meet the water needs of 200 million people.

This article explores the deep inequalities reflected in Non‑Revenue Water (NRW) across countries—from highly efficient systems in Germany and Japan to severe loss rates above 60% in places like Haiti. Through real‑world examples, including Mexico City’s alarming 40–55% NRW levels, the piece illustrates how inadequate infrastructure, rapid urbanization, and limited maintenance investment are intensifying water scarcity challenges worldwide. It positions NRW reduction as not only a technical necessity but a fundamental pillar of climate adaptation and sustainable development.