Guides
Wastewater
Evidence-led explainers on wastewater, with every figure sourced.
Storm overflows explained
Why combined sewers discharge to rivers at all, why recorded spills rose so sharply, and what would actually fix it.
How sewage is treated
Wastewater treatment is mostly a controlled biological process: micro-organisms are fed the pollution and then removed.
Water reuse and potable reuse
Treated wastewater is already a major water source, mostly without anyone noticing. Planned potable reuse just makes it explicit.