No Wastewater Discharge Symbol - Environmental Protection Sign #16840 (License: Personal Use)

The image depicts a standard environmental warning icon: a black pipe releasing blue water into a yellow field, overlaid with a bold red circle and diagonal slash to indicate prohibition. The design follows ISO and ANSI safety signage conventions for clear visual communication of regulatory bans on pollution. It is widely recognized in industrial, municipal, and ecological contexts.

This image is typically used on regulatory signage near waterways, in environmental compliance documents, educational materials, or municipal waste management websites. It matches user intent for understanding pollution restrictions, safety protocols, or legal compliance related to wastewater disposal.