Iowa Code

Iowa Code § 331.304A (2026)

Limitations on county legislation

✓ current as of July 2026

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1. As used in this section:

a. “Aerobic structure”, “animal”, “animal feeding operation”, “animal feeding operation structure”, and “manure” mean the same as defined in section 459.102.

b. “County legislation” means any ordinance, motion, resolution, or amendment adopted by a county pursuant to section 331.302. \n Tue Dec 09 22:15:27 2025 Iowa Code 2026, Chapter 331 (101, 6) §331.304A, COUNTY HOME RULE IMPLEMENTATION 44\n\n 2. A county shall not adopt or enforce county legislation regulating a condition or activity occurring on land used for the production, care, feeding, or housing of animals unless the regulation of the production, care, feeding, or housing of animals is expressly authorized by state law. County legislation adopted in violation of this section is void and unenforceable and any enforcement activity conducted in violation of this section is void. A condition or activity occurring on land used for the production, care, feeding, or housing of animals includes but is not limited to the construction, operation, or management of an animal feeding operation, an animal feeding operation structure, or aerobic structure, and to the storage, handling, or application of manure or egg washwater. 98 Acts, ch 1209, §9, 53 \n

Notes of Decisions

Cited in 1 case, 2004–2004 · leading case: Worth Cnty. Friends of Agric. v. Worth Cnty., 688 N.W.2d 257 (Iowa 2004).

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Worth Cnty. Friends of Agric. v. Worth Cnty., 688 N.W.2d 257 (Iowa 2004). · cites it 24× “The County argues that its ordinance does not conflict with section 331.304A because it does not “regulate” confinement structures.”

— Iowa Code § 331.304A(2) — 1 case

Worth Cnty. Friends of Agric. v. Worth Cnty., 688 N.W.2d 257 (Iowa 2004). “The County argues that its ordinance does not conflict with section 331.304A because it does not “regulate” confinement structures.”

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