Key Issues in Setting Water Quality Standards
When setting water quality standards (WQS) for surface water, every state in the nation is faced with the question of “how clean is clean enough?” The standard set by the state is important to citizens, who rely upon a high level of water quality, as well as municipal and industrial wastewater dischargers who must comply with permit limits that take WQS into account. An issue receiving increasing attention is the health risk to persons who eat relatively large amounts of fish and shellfish that may be contaminated with toxic substances.