Evolving policies to regulate pollution from animal feeding operations.

Area of Science:

• Environmental Science
• Agricultural Science
• Water Quality Management

Background:

• Concentrated animal feeding operations (AFOs) are significant sources of water pollution due to high animal densities.
• Federal regulations address AFOs as point-source polluters, with permit requirements often based on animal numbers.

Purpose of the Study:

• To examine existing federal mandatory controls and voluntary guidelines for reducing contaminant pollution from AFOs.
• To evaluate proposed revisions to federal regulations concerning confined animal feeding operations and their effectiveness in water pollution control.

Main Methods:

• Analysis of federal regulations and voluntary guidelines for animal feeding operations.
• Delineation of land treatment practices for mitigating agricultural by-products.
• Evaluation of proposed regulatory revisions against water quality impairment criteria.

Main Results:

• Federal regulations primarily focus on operation size and manure volume for permitting, potentially neglecting other water quality impairment factors.
• Proposed regulatory revisions may deviate from the objective of effectively controlling water pollution from AFOs.
• Land treatment practices are identified as crucial for reducing agricultural production by-products.

Conclusions:

• Existing regulations face challenges including pollution uncertainties, enforcement gaps, localized issues, and potential alternative solutions.
• Increased federal regulatory demands may not be the most appropriate response to AFO-related water pollution.
• A comprehensive approach considering various factors beyond operational size is needed for effective water quality management.