Sure it is. Have you ever looked along the streets of a typical neighborhood trash collection day? The amount of stuff being thrown away instead of reused is beyond comprehension. Think of all of the things that aren't reused anymore, how much packaging everything has.
You want to see open trash heaps and sewers? Take a cruise to a crowded port. Bright blue waters are becoming unusual, the beaches are littered with broken bottles, etc, in some places at sea there is visible trash.