World wastewater treatment plant observatory · data as reported by each inventory

Wastewater treatment plants in United States · Iowa

763 inventory records · HydroWASTE v1.0 / United States

Data years: 2012. The inventory date does not establish current operation.

763 results

Name	Native size	Year
LOCKRIDGE WWTPHW:28822	270 population served	2012
BLAIRSBURG STLHW:28517	269 population served	2012
MINGO STLHW:28881	269 population served	2012
PISGAH STLHW:28964	268 population served	2012
CHELSEA LAGOONHW:28563	267 population served	2012
CRAWFORDSVILLE WWTPHW:28597	265 population served	2012
DELOIT STLHW:29202	264 population served	2012
GREELEY STLHW:28718	263 population served	2012
LISCOMB STLHW:28819	258 population served	2012
CANTRIL WWTPHW:28547	257 population served	2012
DAVIS CITY WWTPHW:28611	257 population served	2012
LESTER STLHW:28810	257 population served	2012
LUXEMBURG WWTPHW:28834	257 population served	2012
MESERVEY STLHW:28874	256 population served	2012
PATON WWTPHW:28957	255 population served	2012
BLENCOE STLHW:28520	250 population served	2012
ELBERON STLHW:28652	250 population served	2012
LUANA WWTPHW:28832	249 population served	2012
VAN WERT WWTPHW:29097	249 population served	2012
ALTA VISTA WWTPHW:28477	246 population served	2012
KESWICK RUSSHW:28778	246 population served	2012
MACEDONIA WW STAB LAGOONHW:28840	246 population served	2012
WOODBURN WWTPHW:29148	244 population served	2012
BARNES CITY STLHW:28504	243 population served	2012
RANDOLPH WWTPHW:28987	243 population served	2012
WADENA WW STABIL LAGOONHW:29164	243 population served	2012
RENWICK STLHW:28995	242 population served	2012
MARATHON WWTPHW:28854	237 population served	2012
HARVEY STPHW:29178	235 population served	2012
SMITHLAND WWTPHW:29047	234 population served	2012
WESTGATE WWTPHW:29131	234 population served	2012
MOORHEAD WWTPHW:28893	232 population served	2012
GARDEN GROVE WWTPHW:28695	229 population served	2012
REMBRANDT WWTPHW:28993	228 population served	2012
NEW PROVIDENCE SEPTICSHW:28919	227 population served	2012
RAKE WWTPHW:28986	227 population served	2012
LINDEN WWTPHW:28815	226 population served	2012
PORTSMOUTH STLHW:28973	225 population served	2012
LUCAS WWTPHW:28833	224 population served	2012
HORNICK SEWAGE LAGOONHW:28748	222 population served	2012
ELWOOD COMMUNITY SDHW:28663	221 population served	2012
GOOSE LAKE STLHW:28708	221 population served	2012
PULASKI WWTPHW:28982	221 population served	2012
BLOCKTON WWTPHW:28521	220 population served	2012
CUSHING WWTPHW:28604	220 population served	2012
BRADDYVILLE WWTPHW:28529	219 population served	2012
CLUTIER STLHW:28579	219 population served	2012
ONSLOW WWTPHW:28937	216 population served	2012
HOLLAND WWTPHW:28744	215 population served	2012
BOXHOLM WWTPHW:29185	214 population served	2012
PILOT MOUND WWTPHW:29187	214 population served	2012
PRAIRIEBURG WWTPHW:28975	213 population served	2012
PANAMA STLHW:28953	212 population served	2012
WOOLSTOCK STLHW:29150	212 population served	2012
SOUTH ENGLISH WWTPHW:29050	210 population served	2012
TROY MILLS WWTPHW:29154	210 population served	2012
BRIDGEWATER STLHW:28533	209 population served	2012
PARNELL STLHW:28956	209 population served	2012
BRONSON WWTPHW:29157	209 population served	2012
PACKWOOD WWTPHW:28951	208 population served	2012
FOSTORIA WWTPHW:28691	205 population served	2012
SOLDIER WWTPHW:29048	205 population served	2012
ALVORD WWTPHW:28479	204 population served	2012
NORTH POLK SCHOOL DISTRICTHW:28971	204 population served	2012
DIXON WWTPHW:28628	202 population served	2012
LIDDERDALE WWTPHW:28814	202 population served	2012
KAMRAR STLHW:28770	199 population served	2012
WALLINGFORD WWTPHW:29107	197 population served	2012
HANCOCK WW STAB LAGOONHW:28729	196 population served	2012
AURORA STLHW:28499	194 population served	2012
REASNOR STLHW:28989	194 population served	2012
STOUT WWTPHW:29065	192 population served	2012
BERNARD STPHW:28515	191 population served	2012
SHAMBAUGH WWTPHW:29031	190 population served	2012
FREDERIKA STLHW:28693	188 population served	2012
MILLERSBURG WWTPHW:28876	188 population served	2012
EXLINE WWTPHW:28672	187 population served	2012
STOCKTON WWTPHW:29062	187 population served	2012
SHERRILL EAST WWTPHW:29038	186 population served	2012
VINCENT STLHW:29100	185 population served	2012
WALCOTT STP NORTHHW:29104	185 population served	2012
MERIDEN WWTPHW:28872	184 population served	2012
BEAMAN WWTPHW:28510	183 population served	2012
FLORIS LAGOONHW:28683	180 population served	2012
DUNDEE STLHW:28639	179 population served	2012
DECATUR CITY WWTPHW:28612	177 population served	2012
WELTON STPHW:29124	177 population served	2012
DELAWARE STLHW:28616	176 population served	2012
LARRABEE WWTPHW:28797	175 population served	2012
CASTALIA STLHW:29172	175 population served	2012
BARNUM STLHW:28505	174 population served	2012
THOR LAGOONHW:29079	174 population served	2012
ALLERTON NORTH LAGOONHW:28474	173 population served	2012
CLEMONS STLHW:28577	173 population served	2012
DRAKESVILLE WWTPHW:28635	172 population served	2012
GRAND RIVER WWTPHW:28714	171 population served	2012
HENDERSON STLHW:28740	171 population served	2012
RICKARDSVILLE WWTPHW:28998	171 population served	2012
ROSE HILL SEPTICSHW:29191	171 population served	2012
CALUMET STLHW:28544	170 population served	2012

Regulatory context

General reference. This is not an exhaustive review of applicable law.

United States: Clean Water Act / NPDES

NPDES regulates pollutant discharges from point sources to waters of the United States. The permit sets limits and monitoring conditions. A CWNS code identifies an inventory record, not an NPDES permit.

Permit identifier and permitting authority: EPA or an authorized state.
Outfall and receiving water; sewer connections follow a different control route.
Current permit conditions, limits and dated measurements; these are not included in CWNS.

US EPA · NPDES Permit Basics

References reviewed: 2026-11-06. Individual applicability: undetermined. This profile does not establish authorization or compliance.