What is the target pollutant in the water quality criteria?

What is the target pollutant in the water quality criteria?

• A. Nitrogen
• B. Chloride
• C. Phosphorus
• D. Lead

Answer: (C)

Phosphorus is the target pollutant because nutrient-driven eutrophication is typically the main concern addressed by water quality criteria in freshwater systems. Limiting phosphorus helps prevent algal blooms, maintains clearer water, and protects aquatic life by keeping oxygen levels more stable. While nitrogen and other pollutants (chloride, lead) matter, the standard nutrient-focused water quality criteria are commonly aimed at phosphorus as the primary nutrient to regulate.

Phosphorus is the target pollutant because nutrient-driven eutrophication is typically the main concern addressed by water quality criteria in freshwater systems. Limiting phosphorus helps prevent algal blooms, maintains clearer water, and protects aquatic life by keeping oxygen levels more stable. While nitrogen and other pollutants (chloride, lead) matter, the standard nutrient-focused water quality criteria are commonly aimed at phosphorus as the primary nutrient to regulate.