Environmental

Iowa farmland with tile drainage systems that discharge to streams may be subject to:

AIREC drainage permit requirements
BIDNR water quality regulations and potential nutrient management requirements to reduce nutrient loading to waterways✓ Correct
CNo regulation as long as the farm is in operation
DUSDA prohibition on tile drainage installation

Explanation

Iowa tile drainage discharges carrying nitrogen and phosphorus from fields contribute to Iowa's water quality challenges. IDNR, EPA, and USDA programs promote best management practices and nutrient management plans that can affect how Iowa farmland is managed.

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