Open data on 53,857 plants across 71 countries. Search by name, city, operator, or treatment level, with maps, permits, and discharge data on every page.
Wastewater treatment plants remove contaminants from municipal and industrial sewage before it returns to rivers, coastlines, and reuse systems.
This directory tracks 53,857 facilities worldwide, their treatment level, capacity, discharge points, and operators, compiled from public registries and regulatory filings. Every record links back to its source, so you can browse by country, process type, or environmental context and drill straight into the underlying data.
Top 8 countries by plant count. 24 countries indexed in total.
Treatment level determines how much pollution a plant removes before discharge.
The 6 biggest plants in the directory, ranked by people served.
Operators ranked by wastewater plants they run. Each links to a full cross-sector profile.
53,857 wastewater plants, sortable by capacity, treatment level, and data completeness.
Jump into curated slices of the directory.
Structured data, maps, and provenance. Not just a name and address.
Utilities that connect to wastewater treatment across the water cycle.
Longer form articles covering wastewater operations, technology, and compliance.
Claim your listing to update specs and reach regulators, researchers, and local communities.