@thementorhouse: Subway floodwater cleanliness: USA vs Japan! 😱🇺🇸🇯🇵 Floodwater entering subway systems varies notably in cleanliness between countries like the USA and Japan, largely due to differences in infrastructure design, maintenance, and urban planning. In the USA, subway floodwaters often carry a mix of pollutants—street debris, oil, chemicals, and sewage. Many cities use combined drainage systems for stormwater and sewage, which leads to greater contamination during heavy rain or flooding. Older infrastructure and infrequent maintenance further contribute to the buildup of pollutants, making floodwater in subway tunnels dirty and hazardous. In contrast, Japan’s subways benefit from advanced flood management and meticulous urban planning. Separate drainage systems keep stormwater and sewage apart, reducing the risk of contamination. Tunnels and stations are built with effective flood barriers and rapid drainage systems, minimizing stagnation and pollution. As a result, floodwater in Japanese subways is typically cleaner, posing fewer health risks and enabling faster recovery. Ultimately, Japan’s proactive infrastructure approach helps keep subway floodwater significantly cleaner than in many parts of the USA.

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Saturday 19 July 2025 09:02:40 GMT