Wastewater Treatment Plants in Iowa

732 facilities · 589 MGD combined flow

Below are publicly owned wastewater treatment plants in Iowa tracked by Klarifi, with average flow, treatment technology and NPDES permit details. Click a facility for its full profile. Showing the 200 largest by flow of 732 total — search the full set in the Klarifi platform.

Facility	City	Flow (MGD)
Roland City Of STP	Roland	204.13
Gladbrook City Of STP	Gladbrook	71.54
Water Pollution Control Facility	Cedar Rapids	37.68
Davenport Wastewater Treatment Plant	Davenport	36.29
City Of Sioux City STP	Sioux City	14.63
Fort Dodge City Of STP	Fort Dodge	12.74
Iowa City, City Of (south) STP	Iowa City	10.9
Council Bluffs City Of STP	Council Bluffs	8.43
Mason WWTP	Mason City	8.27
Burlington, City Of (wwtp)	Burlington	6.35
City Of Boone Water Pollution Control	Boone	6.08
Cedar Falls City Of STP	Cedar Falls	5.51
Clinton WWTP	Clinton	4.83
City Of Muscatine Water & Resource Recovery Facility	Muscatine	4.64
Iowa Great Lakes Sanitary District WWTP	Milford	4.36
Newton City Of STP	Newton	4.31
Storm Lake WWTP	Storm Lake	3.06
Coralville WWTP	Coralville	2.51
Indianola Water Resource Recovery Facility	Indianola	2.34
City Of Pella	Pella	2.29
Eagle Grove, City Of STP	Eagle Grove	2.26
Webster City WWTP	Webster City	2.25
Grinnell, City Of STP	Grinnell	2.12
Fort Madison City Of STP	Fort Madison	2.03
North Liberty WWTP	North Liberty	2.02
City Of Emmetsburg Treatment Plant	Emmetsburg	1.94
Keokuk City Of STP	Keokuk	1.83
Oelwein WWTP	Oelwein	1.73
Knoxville City Of STP	Knoxville	1.72
Carroll WWTP	Carroll	1.71
Manly WWTP	Manly	1.64
Perry WWTP	Perry	1.63
Waverly WWTP	Waverly	1.6
City Of Sioux Center STP	Sioux Center	1.53
Spencer, City Of	Spencer	1.5
Washington City Of STP	Washington	1.48
Independence WWTP	Independence	1.42
Forest City City Of STP	Forest City	1.41
Algona City Of STP	Algona	1.35
Nevada City Of WWTP	Nevada	1.34
Iowa Falls WWTP	Iowa Falls	1.28
Winterset City Of STP	Winterset	1.28
Osceola WWTP South	Osceola	1.24
West Liberty City Of STP	West Liberty	1.22
Sheldon Wastewater Plant	Sheldon	1.22
Vinton WWTP	Vinton	1.2
Estherville WWTP	Estherville	1.18
City Of Shenandoah STP	Shenandoah	1.16
Jefferson WWTP	Jefferson	1.13
Decorah City Of STP	Decorah	1.12
Fairfield City Of STP	Fairfield	1.09
Creston City Of STP	Creston	1.08
Orange City City Of STP	Orange City	1.07
Adel WWTP	Adel	1.05
Atlantic City Of STP	Atlantic	1.05
Stuart WWTP	Stuart	1.03
Denison Municipal Utilities WWTP	Denison	1.03
Red Oak City Of STP	Red Oak	1
Mount Pleasant WWTP	Mount Pleasant	0.99
Story City City Of STP	Story City	0.93
Eldridge City Of STP (south Slope)	Eldridge	0.92
Holstein WWTP	Holstein	0.9
Buffalo Center City Of STP	Buffalo Center	0.89
Rockwell City WWTP	Rockwell City	0.87
Hudson WWTP	Hudson	0.87
Oskaloosa SW STP	Oskaloosa	0.86
Dewitt WWTP	Dewitt	0.85
Humboldt City Of STP	Humboldt	0.84
Harlan City Of STP	Harlan	0.83
Anamosa WWTP	Anamosa	0.81
Centerville City Of STP (east)	Centerville	0.79
Walnut City Of STP	Walnut	0.76
Waukon City Of STP	Waukon	0.74
Eldora WWTP	Eldora	0.73
Morning Sun City Of STP	Morning Sun	0.72
Williamsburg City Of STP	Williamsburg	0.71
Walcott City Of STP (south)	Walcott	0.7
Clarinda City Of STP	Clarinda	0.7
Manchester WWTP	Manchester	0.7
Springville WWTP	Springville	0.69
Allison City Of STP	Allison	0.68
Cresco WWTP	Cresco	0.67
Lake Mills City Of STP	Lake Mills	0.66
Huxley City Of STP	Huxley	0.64
Corydon City Of STP	Corydon	0.62
Dyersville WWTP	Dyersville	0.62
Garner WWTP	Garner	0.61
Dallas Center City Of STP	Dallas Center	0.6
Lamoni WWTP	Lamoni	0.58
Toledo Wastewater Treatment Facility	Toledo	0.57
Alta WWTP	Alta	0.57
Hampton WWTP	Hampton	0.56
Chariton City Of STP	Chariton	0.56
Osage City Of STP	Osage	0.56
Marcus WWTP	Marcus	0.55
Ogden City Of STP	Ogden	0.55
Woodward City Of STP	Woodward	0.55
Sanborn WWTP	Sanborn	0.53
Nashua WWTP	Nashua	0.52
Asbury City Of STP	Asbury	0.52
Blue Grass City Of STP	Blue Grass	0.52
Carlisle City Of STP	Carlisle	0.52
Monticello WWTP	Monticello	0.49
Madrid WWTP	Madrid	0.48
Hartley WWTP	Hartley	0.47
Belle Plaine City Of STP	Belle Plaine	0.47
Tama City Of STP	Tama	0.46
City Of Rock Valley WTP	Rock Valley	0.46
Sheffield WWTP	Sheffield	0.46
Parkersburg City Of STP	Parkersburg	0.46
Centerville City Of STP (west)	Centerville	0.46
Center Point, City Of STP (south)	Center Point	0.45
Lowden City Of STP	Lowden	0.45
Tiffin WWTP	Tiffin	0.44
Hull City Of STP	Hull	0.44
Missouri Valley City Of STP	Missouri Valley	0.44
Wilton City Of STP	Wilton	0.43
Albia City Of STP (north)	Albia	0.43
West Union City Of STP	West Union	0.43
Dumont City Of STP	Dumont	0.42
Belmond City Of STP	Belmond	0.42
Reinbeck Water Supply	Reinbeck	0.41
Stratford WWTP	Stratford	0.41
Northwood City Of STP	Northwood	0.41
Corning City Of STP	Corning	0.4
Clarence WWTP	Clarence	0.39
Panora WWTP	Panora	0.39
Sumner City Of STP	Sumner	0.39
Columbus Junction City Of STP	Columbus Junction	0.39
Dysart City Of STP	Dysart	0.38
Princeton City Of STP	Princeton	0.38
New Sharon City Of STP	New Sharon	0.38
Tripoli City Of STP	Tripoli	0.38
Tipton WWTP (west)	Tipton	0.37
City Of Ponahontas WTP	Pocahontas	0.37
Leclaire City Of STP	Le Claire	0.37
Lake City WWTP	Lake City	0.36
State Center City Of STP	State Center	0.36
Legrand City Of STP	Le Grand	0.36
Shell Rock WWTP	Shell Rock	0.36
Fonda City Of STP	Fonda	0.35
City Of Solen Treatment Plant	Solon	0.35
West Branch City Of STP	West Branch	0.35
Prairie City, City Of STP	Prairie City	0.34
Rock Rapids City Of STP	Rock Rapids	0.33
Sibley City Of STP	Sibley	0.33
Jewell City Of STP	Jewell	0.33
What Cheer WWTP	What Cheer	0.33
Sac City WWTP	Sac City	0.33
Paullina WWTF	Paullina	0.32
Ackley WWTP	Ackley	0.32
Earlham City Of STP	Earlham	0.32
Colfax City Of STP	Colfax	0.32
Corwith City Of STP	Corwith	0.31
Audubon City Of STP	Audubon	0.3
Onawa City Of STP	Onawa	0.3
Montour City Of STP	Montour	0.3
Remsen City Of STP	Remsen	0.3
Postville City Of STP	Postville	0.3
Leon WWTP	Leon	0.3
Rockwell WWTP	Rockwell	0.3
Guttenberg WWTP	Guttenberg	0.3
Nora Springs City Of STP	Nora Springs	0.3
Mitchellville Water Supply	Mitchellville	0.29
Buffalo City Of STP	Buffalo	0.29
Winthrop City Of STP	Winthrop	0.29
Melcher-Dallas WWTP	Melcher-Dallas	0.28
Granger WWTP	Granger	0.28
Denver WWTP	Denver	0.28
Lake View City Of STP	Lake View	0.28
Lone Tree South WWTP	Lone Tree	0.28
Shellsburg WWTP	Shellsburg	0.27
Atkins City Of STP	Atkins	0.27
Elkhart City Of STP	Elkhart	0.27
Dows WWTP	Dows	0.27
Hospers City Of STP	Hospers	0.27
Blairstown City Of	Blairstown	0.26
Fairfax WWTP	Fairfax	0.26
Desoto City Of STP	De Soto	0.26
Riverside City Of STP	Riverside	0.26
Marengo City Of STP	Marengo	0.26
Anita City Of STP	Anita	0.26
Slater City Of STP	Slater	0.25
La Porte City WWTP	La Porte City	0.25
Dike WWTP	Dike	0.25
Melbourne City Of STP	Melbourne	0.25
Van Meter City Of STP	Van Meter	0.25
Aplington Water Supply	Aplington	0.25
Aurelia WWTP	Aurelia	0.25
Lytton City Of STP	Lytton	0.24
Lime Springs WWTP	Lime Springs	0.24
Wall Lake City Of STP	Wall Lake	0.24
Farley City Of STP	Farley	0.23
Glidden WWTP	Glidden	0.23
Boyden City Of STP	Boyden	0.23
Saint Ansgar WWTP	St. Ansgar	0.23
Sac And Fox Settlement Lagoon	Tama	0.23
Primghar Municipal Light Plant	Primghar	0.23
Ely City Of STP	Ely	0.22
Bellevue City Of STP	Bellevue	0.22

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