How Mexico Built the World's Longest Sewer After Its Drains Reversed

Mexico City is sinking, and the sinking took the slope out of its drains. By 2002 sewage had to be pumped uphill. Túnel Emisor Oriente runs about 62 km, up to 200 m down. Six tunnel boring machines cut lake clay, basalt and groundwater. Longest sewage tunnel on Earth; the pipes above it still sag. All visuals in this video are AI-generated conceptual representations for educational purposes only, including the presenter and the illustrative witness scenes — no real footage and no real people. No real construction footage is used. All technical data is sourced and cited. #MexicoCity #Tenochtitlan #TunnelBoringMachine #LakeTexcoco #LandSubsidence #AquiferDepletion #MexicoCityFlooding DISCLAIMER ____________________________________ This is not engineering advice. Everything here is for informational and entertainment purposes only. Contact an engineer licensed to practice in your area if you need professional advice or services. All non-licensed clips used for fair use commentary, criticism, and educational purposes.