Draft 261003 Not for publication
Thames Water’s sewage works: an interactive map and brief report
Every one of Thames Water’s 346 sewage treatment works, placed on its river, with the evidence from the public record:
capacity against the national design standard, five years of storm spills, Ofwat’s 2025 findings, late upgrades,
Thames’s own promises against its latest plan, and what the Environment Agency’s inspectors found.
The report tells the story since the 2017 prosecution; the map holds the evidence works by works.