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

Wastewater treatment plants in United States · Wisconsin

593 inventory records · HydroWASTE v1.0 / United States

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

593 results

Name	Native size	Year
CLEAR LAKE STPHW:39156	1,082 population served	2012
DICKEYVILLE STPHW:39186	1,080 population served	2012
WITTENBERG WWTPHW:39525	1,077 population served	2012
CASSVILLE STPHW:39144	1,073 population served	2012
LAKE NEBAGAMON STPHW:39291	1,068 population served	2012
RIO WWTPHW:39424	1,062 population served	2012
AMHERST STPHW:39074	1,056 population served	2012
SHIOCTON WWTPHW:39445	1,047 population served	2012
LAND O LAKES SD 1 STPHW:39635	1,037 population served	2012
FOUNTAIN CITY WWTPHW:39223	1,020 population served	2012
Butte des Morts Consol SD STPHW:39559	1,020 population served	2012
ALBANY WWTPHW:39065	1,018 population served	2012
CRIVITZ STPHW:39623	1,016 population served	2012
ELMWOOD WWTPHW:39205	1,015 population served	2012
GILMAN STPHW:39233	1,005 population served	2012
VALDERS STPHW:39490	997 population served	2012
BALSAM LAKE STPHW:39146	996 population served	2012
CAMBRIA WWTPHW:39396	990 population served	2012
Greater Bayfield WWTPHW:39098	986 population served	2012
ELK MOUND WWTPHW:39203	976 population served	2012
BRAzEAU SD 1 STPHW:39060	975 population served	2012
LITTLE SUAMICO SD 1 WWTPHW:39594	975 population served	2012
ALMA WWTPHW:39068	970 population served	2012
PEPIN WWTPHW:39383	953 population served	2012
CABLE SD 1 STPHW:39063	950 population served	2012
WABENO SD 1 STPHW:39575	950 population served	2012
CENTURIA STPHW:39149	946 population served	2012
KRAKOW SD 1 STPHW:39606	943 population served	2012
NECEDAH STPHW:39347	938 population served	2012
HIGHLAND WWTPHW:39251	937 population served	2012
GAYS MILLS STPHW:39229	929 population served	2012
BRANDON WWTPHW:39124	917 population served	2012
MILLTOWN STPHW:39331	913 population served	2012
RIB LAKE STPHW:39419	910 population served	2012
PHELPS SD 1 STPHW:39194	900 population served	2012
AUBURNDALE WWTPHW:39083	899 population served	2012
SULLIVAN SD 1 WWTPHW:39622	895 population served	2012
Poygan PoySippi SD 1 WWTPHW:39552	894 population served	2012
LONE ROCK STPHW:39301	886 population served	2012
PITTSVILLE WWTPHW:39387	880 population served	2012
ARLINGTON WWTPHW:39080	873 population served	2012
DORCHESTER WWTPHW:39189	871 population served	2012
SOLON SPRINGS STPHW:39557	870 population served	2012
RIDGEWAY STPHW:39423	868 population served	2012
SIREN STPHW:39449	864 population served	2012
STODDARD WWTPHW:39463	864 population served	2012
PLAINFIELD STPHW:39389	862 population served	2012
Bluffview Sanitary District STPHW:39122	850 population served	2012
ARGYLE STPHW:39079	834 population served	2012
FOOTVILLE STPHW:39222	832 population served	2012
BIRNAMWOOD STPHW:39108	824 population served	2012
WONEWOC WWTPHW:39526	819 population served	2012
GLIDDEN SD STPHW:39555	812 population served	2012
WAUZEKA WWTPHW:39504	811 population served	2012
BLANCHARDVILLE STPHW:39111	810 population served	2012
PLAIN STPHW:39388	805 population served	2012
Eden STPHW:39198	804 population served	2012
ALLENTON SD 1 WWTPHW:39532	800 population served	2012
LARSEN WINCHESTER SD WWTPHW:39617	790 population served	2012
BLUE MOUNDS STPHW:39114	781 population served	2012
BRUCE WWTPHW:39133	773 population served	2012
WILD ROSE WWTPHW:39519	770 population served	2012
VIOLA STPHW:39492	765 population served	2012
ALMENA WWTPHW:39070	754 population served	2012
WHITELAW WWTPHW:39516	752 population served	2012
LA FARGE STPHW:39287	746 population served	2012
TIGERTON WWTPHW:39478	739 population served	2012
SULLIVAN WWTPHW:39468	738 population served	2012
ST NAZIANZ WWTPHW:39433	737 population served	2012
STAR PRAIRIE STPHW:39460	731 population served	2012
MELLEN WWTPHW:39322	730 population served	2012
FRANCIS CREEK WWTPHW:39224	718 population served	2012
SEVASTOPOL SD 1 STPHW:39571	718 population served	2012
COON VALLEY WWTPHW:39170	717 population served	2012
MERRILLAN WWTPHW:39327	717 population served	2012
Valley Ridge CWC STPHW:39089	711 population served	2012
REESEVILLE WWTPHW:39416	710 population served	2012
NORWALK WWTPHW:39361	703 population served	2012
NORTH FREEDOM STPHW:39360	701 population served	2012
OAKDALE WWTPHW:39593	700 population served	2012
UNITY STPHW:39489	699 population served	2012
MONTFORT STPHW:39339	691 population served	2012
WEBSTER STPHW:39505	684 population served	2012
WYOCENA WWTPHW:39530	678 population served	2012
ALMA CENTER STPHW:39069	677 population served	2012
ELEVA CSHW:39202	675 population served	2012
STOCKBRIDGE STPHW:39558	671 population served	2012
HATFIELD SD 1 STPHW:39583	670 population served	2012
ROCKLAND STPHW:39429	669 population served	2012
BOYD WWTPHW:39123	663 population served	2012
CAZENOVIA STPHW:39145	663 population served	2012
SOLDIERS GROVE WWTPHW:39637	660 population served	2012
WINTER STPHW:39605	657 population served	2012
LINDEN STPHW:39296	656 population served	2012
Saint Joseph SD 1 STPHW:39073	650 population served	2012
AVOCA WWTPHW:39086	643 population served	2012
HO CHUNK NATION WWTPHW:39257	638 population served	2012
MINDORO SD 1 STPHW:39538	633 population served	2012
PRENTICE STPHW:39405	625 population served	2012
Hewitt SD WWTPHW:39619	616 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.