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Dirty water goes down the drain but doesn't disappear. In heavy rain Joseph Bazalgette's London sewer network hits hidden limits before sewage is removed. It slopes and converges, channeling a river of sewage by gravity to distant outfalls until the flow rises too high. Surges in pressure can make old pipes overflow and release untreated sewage into rivers. The Thames Tideway Tunnel, a massive interceptor bore, stores storm sewage beneath the Thames and captures surge flows. If the new tunnel collapses under extreme pressure, untreated sewage could flood the Thames, temporarily making the water unsafe for humans. Follow for one real science fact every day.

Topic: Sewage Systems

Created: 2026-03-07 10:05:34

Confidence: 90%

YouTube: ✅ Uploaded - View Video

Uploaded at: 2026-03-07T03:00:05.200264

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