That's an excellent question about something most people don't consider until they see overflowing bins after a storm! Modern urban trash bins are actually quite clever when it comes to handling wet weather.
Yes, most contemporary public trash bins do feature drainage holes specifically designed to manage rainwater. You'll typically find these small openings at the bottom of the bin compartment, strategically placed to allow water to escape while containing solid waste. This prevents bins from becoming miniature swimming pools during heavy downpours.
The engineering goes beyond just holes though. Many cities now use bins with sloped bottoms that direct water toward these drainage points. Some advanced models even include filtration systems that separate liquids from solids, ensuring that the trash doesn't become waterlogged and excessively heavy for collection crews.
Municipalities have learned from experience that proper drainage is crucial for several reasons: it reduces overall weight (lowering collection costs), minimizes odors from stagnant water, and prevents the creation of mosquito breeding grounds. During particularly intense rainfall, the drainage systems help bins manage all but the most extreme weather conditions, though maintenance crews do conduct additional checks after severe storms.
The next time you pass a city trash bin during a rain shower, notice how it's handling the weather - that's urban infrastructure working smarter, not harder!