![Recycling contamination checks in Olympia, Wash.](https://resource-recycling.com/recycling/wp-content/uploads/sites/3/2021/08/Olympia-LidLifts20180731-7034-web-1024x684.jpg)
Olympia, Wash. is one of many communities implementing recycling contamination checks at the curb. | Courtesy of city of Olympia
Facing ever-increasing pressure to deliver a cleaner stream to processors, cities across North America are turning to curbside inspection of residential carts. Many are seeing positive results from the efforts.