In Poncitlán, a wastewater treatment plant is not a minor public work: it is a test of government. If it operates, connects to the drainage network and publishes results, it can turn a history of water-related neglect into a conversation about institutional capacity, public health and municipal development. In Poncitlán, water can no longer be treated as an environmental issue detached from the economy. It is a test of government. For years, the municipality has carried an un