Back to Iowa

SF2305 • 2026

A bill for an act regulating the application of manure originating from an animal feeding operation, and making penalties applicable.

A bill for an act regulating the application of manure originating from an animal feeding operation, and making penalties applicable.

Passed Legislature

This bill passed both chambers and reached final enrollment, even if later executive action is not shown here.

Sponsor
STAED
Last action
2026-02-17
Official status
Subcommittee: Shipley, Staed, and Zumbach. S.J. 304 .
Effective date
Not listed

Plain English Breakdown

Using official source text because the generated explanation was unavailable or could not be confirmed against the official bill text.

A bill for an act regulating the application of manure originating from an animal feeding operation, and making penalties applicable.

A bill for an act regulating the application of manure originating from an animal feeding operation, and making penalties applicable.

What This Bill Does

  • A bill for an act regulating the application of manure originating from an animal feeding operation, and making penalties applicable.

Limits and Unknowns

  • This entry is temporarily using official source text because the generated explanation could not be confirmed against the official bill text during the last sync.

Bill History

  1. 2026-02-17 Iowa Legislature

    Subcommittee: Shipley, Staed, and Zumbach. S.J. 304 .

  2. 2026-02-12 Iowa Legislature

    Introduced, referred to Natural Resources and Environment. S.J. 271 .

Official Summary Text

A bill for an act regulating the application of manure originating from an animal feeding operation, and making penalties applicable.

Current Bill Text

Read the full stored bill text
Senate

File

2305

-

Introduced

SENATE

FILE

2305

BY

STAED

A

BILL

FOR

An

Act

regulating

the

application

of

manure

originating

from

an

1

animal

feeding

operation,

and

making

penalties

applicable.

2

BE

IT

ENACTED

BY

THE

GENERAL

ASSEMBLY

OF

THE

STATE

OF

IOWA:

3

TLSB

5217XS

(11)

91

da/js

S.F.

2305

Section

1.

Section

459.312,

subsection

10,

paragraph

h,

1

Code

2026,

is

amended

to

read

as

follows:

2

h.

A

description

of

land

identified

protocol

for

the

3

application

of

liquid

manure

due

to

an

emergency

circumstance

4

if

allowed

pursuant

to

section

459.313A

.

The

owner

protocol

5

must

identify

the

land

in

the

original

manure

management

plan

6

or

in

the

next

updated

manure

management

plan

required

to

7

be

submitted

to

the

department

following

the

designated

for

8

emergency

application.

9

Sec.

2.

Section

459.313,

Code

2026,

is

amended

to

read

as

10

follows:

11

459.313

Manure

application

——

rules

.

12

1.

The

department

shall

adopt

rules

governing

the

13

application

of

manure

originating

from

an

anaerobic

lagoon

or

14

aerobic

structure

which

is

part

of

a

confinement

animal

feeding

15

operation.

The

rules

shall

establish

application

rates

and

16

practices

to

minimize

groundwater

or

surface

water

pollution

17

resulting

from

application,

including

pollution

caused

by

18

runoff

or

other

manure

flow

resulting

from

precipitation

19

events.

The

rules

shall

establish

different

application

rates

20

and

practices

based

on

the

water

holding

capacity

of

the

soil

21

at

the

time

of

application.

22

2.

A

person

shall

not

apply

manure

by

spray

irrigation

23

equipment,

except

as

provided

by

rules

adopted

by

the

24

department

pursuant

to

chapter

17A

.

However,

a

person

shall

25

not

use

restricted

spray

irrigation

equipment

to

apply

manure

,

26

including

effluent,

originating

from

a

confinement

an

animal

27

feeding

operation,

unless

the

manure

has

been

diluted

as

28

provided

by

rules

adopted

by

the

department,

including

diluted

29

by

use

of

an

anaerobic

lagoon.

30

3.

A

person

shall

not

apply

manure

unless,

within

31

twenty-four

hours

after

surface

application,

the

manure

is

32

injected

or

incorporated

into

the

upper

four

inches

or

more

of

33

soil.

34

4.

A

person

shall

not

apply

manure

on

saturated

ground,

snow

35

-1-

LSB

5217XS

(11)

91

da/js

1/

6

S.F.

2305

covered

ground,

or

frozen

ground

except

as

provided

in

section

1

459.313A.

2

Sec.

3.

Section

459.313A,

Code

2026,

is

amended

to

read

as

3

follows:

4

459.313A

Application

of

manure

on

land

——

saturated

ground,

5

snow

covered

ground

and

,

or

frozen

ground.

6

1.

A

person

may

apply

manure

originating

from

an

animal

7

feeding

operation

on

saturated

ground,

snow

covered

ground

,

8

or

frozen

ground

,

except

to

the

extent

otherwise

provided

by

9

applicable

requirements

in

this

section

,

this

chapter

,

or

the

10

national

pollutant

discharge

elimination

system

pursuant

to

11

the

federal

Water

Pollution

Control

Act

,

33

U.S.C.

ch.

26,

as

12

amended

,

and

40

C.F.R.

pts.

122

and

412

only

under

an

emergency

13

circumstance

.

14

1.

2.

During

the

period

beginning

December

21

and

ending

15

April

1,

the

person

may

apply

liquid

manure

originating

from

16

a

manure

storage

structure,

that

is

part

of

a

confinement

17

feeding

operation,

on

snow

covered

ground

only

when

there

is

18

an

emergency.

During

the

period

beginning

February

1

and

19

ending

April

1,

the

person

may

apply

liquid

manure

originating

20

from

a

manure

storage

structure,

that

is

part

of

a

confinement

21

feeding

operation,

on

frozen

ground

only

when

there

is

an

22

emergency.

An

emergency

circumstance

occurs

only

when

there

is

23

an

immediate

need

to

comply

with

section

459.311,

subsection

1

,

24

due

to

unforeseen

circumstances

affecting

the

storage

of

the

25

liquid

manure.

The

unforeseen

circumstances

must

be

beyond

26

the

control

of

the

owner

of

the

confinement

animal

feeding

27

operation,

including

but

not

limited

to

natural

disaster,

28

unusual

weather

conditions,

or

equipment

or

structural

failure.

29

A

person

who

is

authorized

to

apply

liquid

manure

on

saturated

30

ground,

snow

covered

ground

,

or

frozen

ground

when

there

is

an

31

emergency

shall

comply

with

all

of

the

following:

32

a.

The

person

must

contact

the

department

by

telephone

prior

33

to

the

application.

34

b.

(1)

The

For

manure

originating

from

a

confinement

35

-2-

LSB

5217XS

(11)

91

da/js

2/

6

S.F.

2305

animal

feeding

operation,

the

person

must

apply

the

liquid

1

manure

on

land

identified

for

such

application

in

a

manure

2

management

plan

according

to

an

emergency

circumstance

protocol

3

submitted

by

the

owner

of

the

confinement

feeding

operation

4

to

the

department

as

part

of

the

owner’s

manure

management

5

plan

as

provided

in

section

459.312

.

The

owner

of

the

6

confinement

feeding

operation

must

identify

the

land

in

the

7

manure

management

plan

prior

to

the

application.

The

owner

8

must

identify

the

land

in

the

original

manure

management

plan

9

or

in

the

next

updated

manure

management

plan

required

to

be

10

submitted

to

the

department

following

the

application.

11

(2)

For

manure

originating

from

an

open

feedlot

operation,

12

the

person

must

apply

the

manure,

including

any

effluent,

on

13

land

according

to

an

emergency

circumstance

protocol

submitted

14

by

the

owner

of

the

open

feedlot

operation

to

the

department

15

as

part

of

the

owner’s

nutrient

management

plan

as

provided

in

16

section

459A.208.

17

c.

The

liquid

manure

must

be

applied

on

a

field

with

a

18

phosphorus

index

rating

of

two

or

less.

19

d.

Any

surface

water

drain

tile

intake

that

is

on

land

in

20

the

owner’s

manure

management

plan

and

located

down

gradient

21

of

the

application

must

be

temporarily

blocked

beginning

not

22

later

than

the

time

that

the

liquid

manure

is

first

applied

and

23

ending

not

earlier

than

two

weeks

after

the

completion

of

the

24

application.

25

2.

3.

The

authorization

to

apply

liquid

manure

in

26

subsection

1

does

not

apply

to

any

of

the

following:

27

a.

An

an

immediate

need

to

comply

with

section

459.311,

28

subsection

1

,

caused

by

the

improper

design

or

management

of

29

the

a

manure

storage

structure,

including

but

not

limited

to

a

30

failure

to

properly

account

for

the

volume

of

the

manure

to

be

31

stored.

32

b.

Liquid

manure

originating

from

a

manure

storage

structure

33

constructed

or

expanded

on

or

after

July

1,

2009,

if

the

manure

34

storage

structure

has

a

capacity

to

store

manure

for

less

than

35

-3-

LSB

5217XS

(11)

91

da/js

3/

6

S.F.

2305

one

hundred

eighty

days.

1

3.

4.

Subsections

1

and

2

through

3

do

not

apply

to

any

of

2

the

following:

3

a.

The

application

of

liquid

manure

originating

from

a

small

4

animal

feeding

operation.

5

b.

The

application

of

liquid

manure

and

injection

into

the

6

soil

or

incorporation

within

the

soil

on

the

same

date.

7

Sec.

4.

Section

459A.208,

subsection

7,

Code

2026,

is

8

amended

by

adding

the

following

new

paragraph:

9

NEW

PARAGRAPH

.

f.

A

protocol

for

the

application

of

manure

10

due

to

an

emergency

circumstance

if

allowed

pursuant

to

section

11

459.313A.

The

protocol

must

identify

land

designated

for

12

emergency

application.

13

EXPLANATION

14

The

inclusion

of

this

explanation

does

not

constitute

agreement

with

15

the

explanation’s

substance

by

the

members

of

the

general

assembly.

16

BACKGROUND.

An

animal

feeding

operation

(AFO)

is

regulated

17

by

the

department

of

natural

resources

(DNR)

under

several

Code

18

chapters,

including

Code

chapter

459

governing

all

AFOs,

which

19

includes

provisions

regulating

confinement

feeding

operations,

20

and

Code

chapter

459A,

which

includes

selected

provisions

21

regulating

open

feedlot

operations.

An

AFO

is

an

area

in

22

which

agricultural

animals

are

confined

for

45

days

or

more

23

in

any

12-month

period,

and

all

associated

structures

used

24

for

the

storage

of

manure.

A

confinement

feeding

operation

25

maintains

animals

in

roofed

buildings

and

stores

liquid

manure

26

in

a

formed

or

unformed

structure

(see

Code

section

459.102).

27

An

open

feedlot

operation

is

an

unroofed

or

partially

roofed

28

facility

without

crop,

vegetation,

or

forage

growth

or

29

residue

cover

(Code

section

459A.102).

Manure

from

an

open

30

feedlot

operation

includes

solids

that

cannot

be

stored

in

a

31

structure

(i.e.,

stockpiled).

Open

feedlot

effluent

refers

32

to

a

combination

of

manure,

precipitation-induced

runoff,

or

33

other

runoff

from

an

open

feedlot

before

its

settleable

solids

34

have

been

removed.

Both

Code

chapters

regulate

the

application

35

-4-

LSB

5217XS

(11)

91

da/js

4/

6

S.F.

2305

of

manure,

often

pursuant

to

a

plan

required

to

be

filed

with

1

DNR.

In

the

case

of

a

confinement

feeding

operation,

the

plan

2

is

referred

to

as

a

manure

management

plan

(MMP)

(Code

section

3

459.313)

and

in

the

case

of

an

open

feedlot

operation,

the

4

plan

is

referred

to

as

a

nutrient

management

plan

(NMP)

(Code

5

section

459A.208).

6

BACKGROUND

——

SNOW

COVERED

GROUND

AND

FROZEN

GROUND.

7

According

to

Code

section

459.313A,

a

person

may

apply

manure

8

originating

from

an

AFO

on

snow

covered

ground

or

frozen

9

ground,

except

to

the

extent

otherwise

provided

by

applicable

10

requirements

in

the

Code

section

or

federal

law.

The

Code

11

section’s

prohibition

is

limited

to

the

application

of

liquid

12

manure

originating

from

a

manure

storage

structure

that

is

13

part

of

a

confinement

feeding

operation.

Specifically,

the

14

Code

section

prohibits

the

application

of

liquid

manure

on

15

snow

covered

ground

during

the

period

beginning

December

21

16

and

ending

April

1

and

on

frozen

ground

during

the

period

17

beginning

February

1

and

ending

April

1.

There

are

several

18

exceptions.

The

first

exception

allows

a

person

to

apply

the

19

liquid

manure

during

the

cold

weather

months

if

there

is

an

20

emergency

due

to

unforeseen

circumstances

affecting

the

storage

21

of

the

liquid

manure

that

are

beyond

the

control

of

the

owner

22

of

the

confinement

feeding

operation.

In

those

circumstances,

23

the

owner

or

a

person

authorized

to

apply

the

liquid

manure

24

must

contact

DNR,

apply

the

liquid

manure

on

land

identified

25

in

the

owner’s

MMP,

apply

the

liquid

manure

on

a

field

with

a

26

phosphorus

index

rating

of

two

or

less,

and

ensure

that

surface

27

water

drain

tile

intakes

are

blocked.

An

emergency

cannot

be

28

used

as

an

exception

due

to

the

improper

design

or

management

29

of

a

manure

storage

structure

or

if

the

manure

originates

30

from

a

manure

storage

structure

constructed

on

or

after

July

31

1,

2009,

with

a

capacity

to

store

manure

for

less

than

180

32

days.

The

second

exception

applies

to

small

animal

feeding

33

operations.

The

third

exception

applies

to

the

application

34

of

liquid

manure

that

is

injected

in

the

soil

or

incorporated

35

-5-

LSB

5217XS

(11)

91

da/js

5/

6

S.F.

2305

within

the

soil

on

the

same

day.

1

BILL’S

PROVISIONS

——

APPLICATION

REQUIREMENTS

APPLIED

TO

2

AFOS.

This

bill

expressly

authorizes

DNR

to

adopt

rules

3

governing

the

application

of

manure

originating

from

all

AFOs

4

(Code

section

459.313).

A

requirement

that

restricts

the

5

use

of

certain

spray

irrigation

equipment

dispersing

manure

6

originating

from

a

confinement

feeding

operation

would

apply

to

7

manure,

including

effluent,

originating

from

an

open

feedlot

8

operation.

The

bill

provides

that

a

person

who

applies

manure,

9

including

effluent,

originating

from

an

AFO

to

the

surface

10

of

land

must

inject

or

incorporate

the

manure

into

the

soil

11

within

24

hours.

The

bill

prohibits

the

application

of

manure

12

originating

from

an

AFO

on

saturated

ground,

snow

covered

13

ground,

or

frozen

ground

regardless

of

the

calendar.

The

14

bill

retains

exceptions

for

the

application

of

manure

under

15

emergency

circumstances.

The

bill

provides

that

the

emergency

16

protocols

must

be

specified

in

an

MMP

or

NMP.

The

bill

strikes

17

a

provision

that

prohibits

a

person

from

applying

liquid

manure

18

under

emergency

circumstances

if

the

manure

originated

from

19

a

manure

storage

structure

having

a

capacity

to

store

manure

20

for

less

than

180

days

and

its

date

of

construction

was

on

or

21

after

July

1,

2009.

The

bill

also

strikes

a

provision

that

22

allows

a

person

to

apply

liquid

manure

under

any

circumstances

23

if

the

person

injects

the

liquid

manure

on

the

same

date

as

24

application.

25

APPLICABLE

PENALTIES.

A

person

who

is

in

violation

of

26

the

bill’s

provisions

is

subject

to

a

civil

penalty

under

27

Code

section

459.603,

which

provides

for

an

administrative

28

assessment

of

a

civil

penalty

of

up

to

$10,000

for

each

day

of

29

a

violation

(Code

section

455B.109)

or

the

judicial

assessment

30

of

a

civil

penalty

of

up

to

$5,000

for

each

day

of

a

violation

31

(Code

section

455B.191).

32

-6-

LSB

5217XS

(11)

91

da/js

6/

6