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
MALLARD LAGOONHW:28845	634 population served	2012
SWEA CITY STLHW:29072	634 population served	2012
BODE STLHW:28524	632 population served	2012
DEXTER WWTPHW:28625	628 population served	2012
GRAND MOUND STLHW:28713	619 population served	2012
ST CHARLES WWTPHW:29021	619 population served	2012
CRESCENT WWTPHW:28598	617 population served	2012
AGENCY WWTPHW:28463	616 population served	2012
KELLOGG WWTPHW:28773	606 population served	2012
LONG GROVE WWTPHW:28826	605 population served	2012
MOULTON STLHW:28896	605 population served	2012
UNIVERSITY PARK STLHW:29192	604 population served	2012
GRANDVIEW WWTPHW:28715	600 population served	2012
QUASQUETON STLHW:28983	600 population served	2012
KENSETT WWTPHW:28774	598 population served	2012
IRETON WWTPHW:28763	597 population served	2012
OXFORD JCT WWTPHW:28949	590 population served	2012
ALBION STLHW:28469	585 population served	2012
TITONKA WWTPHW:29084	584 population served	2012
LOVILIA STLHW:28829	583 population served	2012
NORWAY WWTPHW:28930	583 population served	2012
BURT STLHW:28541	575 population served	2012
RADCLIFFE LAGOONHW:28985	574 population served	2012
SABULA STPHW:29199	574 population served	2012
BADGER STLHW:28501	569 population served	2012
AINSWORTH WWTPHW:28464	567 population served	2012
RUSSELL WWTPHW:29015	565 population served	2012
MINDEN WASTE STAB LAGOONHW:28880	564 population served	2012
SCRANTON WWTPHW:29028	557 population served	2012
ZEARING STLHW:29153	554 population served	2012
HUMESTON LGNHW:28754	553 population served	2012
MYSTIC WWTPHW:28907	545 population served	2012
VAIL LAGOONHW:29205	542 population served	2012
OCHEYEDAN WWTPHW:28933	539 population served	2012
LEHIGH WWTPHW:28805	536 population served	2012
MIDDLETOWN WWTPHW:28875	535 population served	2012
NEW ALBIN WWTPHW:28911	534 population served	2012
GARWIN STLHW:28699	533 population served	2012
BAYARD WWTPHW:28509	530 population served	2012
WHITTEMORE WWTPHW:29138	530 population served	2012
OTHO STLHW:28945	529 population served	2012
ELLSWORTH WWTPHW:28662	526 population served	2012
WYOMING WWTPHW:29152	524 population served	2012
CLERMONT WWTPHW:29159	523 population served	2012
RICHLAND WWTPHW:28997	522 population served	2012
MAYNARD WWTPHW:29162	518 population served	2012
DELMAR STLHW:28618	517 population served	2012
CONESVILLE STLHW:28588	510 population served	2012
DOW CITY SEWAGE LAGOONHW:28633	510 population served	2012
GILMAN STLHW:28703	509 population served	2012
KLEMME STLHW:28784	509 population served	2012
BEACON STPHW:29188	509 population served	2012
MILTON WWTPHW:28878	506 population served	2012
GILMORE CITY STLHW:28704	504 population served	2012
CHARTER OAK LGNHW:28562	503 population served	2012
BATAVIA WWTPHW:28506	499 population served	2012
COLLINS STLHW:28585	499 population served	2012
THOMPSON WWTPHW:29078	498 population served	2012
LIME SPRINGS WWTPHW:29168	496 population served	2012
ALLERTON SOUTH LAGOONHW:28473	494 population served	2012
BUSSEY STLHW:29181	494 population served	2012
DUNCOMBE STLHW:28638	488 population served	2012
STANHOPE STLHW:29055	488 population served	2012
DELHI STLHW:28617	485 population served	2012
FARRAGUT STLHW:28680	485 population served	2012
LAMONT STLHW:28792	485 population served	2012
ARCADIA STLHW:28487	483 population served	2012
RINGSTEAD WWTPHW:29000	481 population served	2012
DOON STLHW:28632	476 population served	2012
EARLING WWTPHW:28884	471 population served	2012
STACYVILLE WWTPHW:29054	469 population served	2012
BREDA WWTPHW:28532	467 population served	2012
LOST NATION STLHW:28828	467 population served	2012
MARTENSDALE WWTPHW:28861	467 population served	2012
ROYAL WSPHW:29184	466 population served	2012
ASHTON WWTPHW:28492	462 population served	2012
NEW MARKET WWTPHW:28918	456 population served	2012
PLAINFIELD STLHW:28965	455 population served	2012
LOHRVILLE WWTPHW:28824	453 population served	2012
SALEM WWTPHW:29024	453 population served	2012
ALBURNETT WWTPHW:28470	451 population served	2012
FT MADISON WESTERLY STLHW:28690	450 population served	2012
HAWKEYE WWTPHW:29161	449 population served	2012
BIRMINGHAM STLHW:28516	448 population served	2012
UNION WWTPHW:29091	448 population served	2012
MILES WWTPHW:29198	445 population served	2012
CALAMUS STLHW:28542	439 population served	2012
LAWLER STLHW:28801	439 population served	2012
OAKVILLE LAGOONHW:28932	439 population served	2012
EMERSON WWTPHW:28665	438 population served	2012
GALVA WWTPHW:28694	434 population served	2012
ANDREW STPHW:29194	434 population served	2012
BONAPARTE WWTPHW:28525	433 population served	2012
LEWIS STLHW:28812	433 population served	2012
NEW VIRGINIA WWTPHW:28922	433 population served	2012
LIVERMORE STLHW:28821	431 population served	2012
ARLINGTON WWTPHW:29158	429 population served	2012
LORIMOR WWTPHW:28827	427 population served	2012
TRURO WWTPHW:29089	427 population served	2012
CASEY WWTPHW:28552	426 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.