In the 1970s, urban planners redesigning Manhattan's quiet neighbor, Roosevelt Island, wanted to build a futuristic utopia free of traffic, diesel fumes, and clanking garbage trucks. Their solution was the Automated Vacuum Collection system, known as AVAC. Originally developed in Sweden by Centralsug (now Envac), this sci-fi infrastructure uses a sprawling network of underground pneumatic pipes to suck municipal trash away from residential buildings.
Here is how it works: residents drop their bagged waste into chutes located on their respective apartment floors. The trash drops down into a local holding valve. Once or twice a day, a central computer triggers a massive exhaust fan system, creating a powerful vacuum differential in the 20-inch steel pipes running beneath the island.
The valves open, and gravity combined with rushing air whisks the trash through the subterranean network at speeds exceeding 30 to 60 miles per hour. All the waste converges at a central collection terminal on the island, where it is compacted into large containers before being hauled away. Because the system is entirely enclosed, Roosevelt Island boasts virtually no garbage smell, no sidewalk trash piles, and zero early-morning garbage truck noise.
While pneumatic waste systems are used in a few specialized places like Disney World and Barcelona, Roosevelt Island remains one of the only residential neighborhoods in the United States operating a large-scale AVAC network. Despite being over 50 years old, this retro-futuristic system continues to process tens of tons of waste daily, serving as a monument to 1970s optimistic urban engineering.