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

Wastewater treatment plants in United States · Illinois

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414 inventory records · HydroWASTE v1.0 / United States

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

414 results

CompareNameNative sizeYear
LINDENHURST STPHW:2772614,861 population served2012
STREATOR STPHW:2761414,752 population served2012
ST CLAIR STPHW:2763214,253 population served2012
KEWANEE STP and COLLECTION SYSTEMHW:2768414,143 population served2012
Joliet Aux Sable Creek Basin WWTPHW:2759914,000 population served2012
WASHINGTON STP 2HW:2766113,325 population served2012
Taylorville Sanitary District WWTPHW:2774313,246 population served2012
Lake County DPW New Century TownHW:2777912,800 population served2012
Roselle JL Devlin WWTPHW:2778212,750 population served2012
WOODSTOCK NORTH STPHW:2775612,385 population served2012
WOODSTOCK SOUTH STPHW:2775712,385 population served2012
EFFINGHAM WWTP and COLLECTION SYSTEMHW:2773212,339 population served2012
LaSalle WWTPHW:2779812,000 population served2012
MENDOTA STPHW:2796912,000 population served2012
MCHENRY CENTRAL STPHW:2776111,928 population served2012
ANTIOCH STPHW:2772211,375 population served2012
ROCHELLEHW:2781811,267 population served2012
NEW LENOX CENTRAL STPHW:2760211,000 population served2012
CREST HILL STW EASTHW:2759410,861 population served2012
MURPHYSBORO CITY OFHW:2755710,786 population served2012
ROCK FALLS STPHW:2757610,685 population served2012
MINOOKA STPHW:2759210,400 population served2012
MORTON STP 2HW:2781410,269 population served2012
BARRINGTON STPHW:2758910,168 population served2012
WATERLOO CITY OFHW:2762010,100 population served2012
WOOD DALE STP NORTHHW:2771410,080 population served2012
Gilberts Village ofHW:2784810,000 population served2012
HARRISBURG STPHW:279199,832 population served2012
CREVE COEUR STPHW:277759,446 population served2012
Monmouth City ofHW:275529,444 population served2012
HIGHLAND STPHW:276549,433 population served2012
Huntley East PlantHW:277679,345 population served2012
Huntley West PlantHW:277689,345 population served2012
CREST HILL STW WESTHW:275939,179 population served2012
HARVARD STPHW:277669,000 population served2012
OLNEY STPHW:279648,968 population served2012
MORRIS STP and COLLECTION SYSTEMHW:277378,890 population served2012
WEST FRANKFORT STPHW:279058,870 population served2012
JERSEYVILLE STP SOUTHHW:277338,862 population served2012
DU QUOIN STPHW:279018,809 population served2012
MANTENO VILLAGE OFHW:279568,400 population served2012
ROSELLE BOTTERMAN STPHW:277818,100 population served2012
CARBONDALE NWWTPHW:275487,929 population served2012
METROPOLIS STPHW:279327,867 population served2012
SALEM STPHW:278137,863 population served2012
ROBINSON STPHW:278647,862 population served2012
MASCOUTAH CITY OFHW:276397,750 population served2012
FOX RIVER GROVE STPHW:277597,734 population served2012
MOKENA STPHW:277097,700 population served2012
WESTVILLE BELGIUM STPHW:278777,650 population served2012
MARENGO STPHW:277697,637 population served2012
PRINCETON STPHW:278057,555 population served2012
NEW LENOX STP 2HW:276037,500 population served2012
WOOD DALE SOUTH STPHW:277157,500 population served2012
ROCKTON SEWAGE TREATMENTHW:276807,400 population served2012
LITCHFIELD STPHW:278957,399 population served2012
GENOA CITY OFHW:276257,360 population served2012
EAST ALTON STPHW:276487,169 population served2012
MANHATTAN STPHW:277107,093 population served2012
Benton WWTP and Collection SystemHW:279067,087 population served2012
Frankfort North STPHW:275977,082 population served2012
E PEORIA SEWAGE PLT NO 3HW:276637,000 population served2012
Mill Creek Water Reclamation DistriHW:278447,000 population served2012
GREENVILLE STWHW:278826,955 population served2012
Lake County DPW Mill Creek WWTPHW:277786,719 population served2012
CAIRO STPHW:278586,552 population served2012
LOCKPORT BONNIE BRAE STP NORTH BASINHW:275956,500 population served2012
GENESEO STPHW:276856,499 population served2012
MILAN SEW TREATMENT PLANTHW:276696,300 population served2012
CHANNAHON STPHW:276056,200 population served2012
BEARDSTOWN STPHW:279216,123 population served2012
WASHINGTON STP 1HW:276606,038 population served2012
MORTON STP 3HW:277746,031 population served2012
SANDWICH STWHW:275456,009 population served2012
PARIS SOUTH STPHW:275635,947 population served2012
CARLINVILLE STPHW:279235,896 population served2012
Spring Grove Wastewater SystemHW:277605,782 population served2012
LAWRENCEVILLE STPHW:277965,700 population served2012
SAVANNA City ofHW:275795,615 population served2012
New Lenox STP 3HW:276045,600 population served2012
HANOVER PARK WWTP NO1HW:277805,542 population served2012
SPRING VALLEY STPHW:278045,500 population served2012
WATSEKA SEWAGE WORKSHW:275715,375 population served2012
MONTICELLO STP and COLLECTION SYSTEMHW:279415,365 population served2012
SHELBYVILLE STPHW:278745,329 population served2012
City of Pinckneyville STP 2HW:279035,316 population served2012
ANNA STPHW:278275,136 population served2012
WILMINGTON SWG TRMT PLANTHW:275665,131 population served2012
ROCK ISLAND STP SWHW:276745,040 population served2012
Caseyville Township West FacilityHW:276315,000 population served2012
DUPO SEWAGE WORKSHW:276444,879 population served2012
Eldorado WTFHW:276154,838 population served2012
LaSalle East Side WWTP New PlantHW:277994,800 population served2012
Roxana Village ofHW:278474,800 population served2012
COAL CITY STPHW:278704,751 population served2012
MARSEILLES STPHW:279684,600 population served2012
PITTSFIELD MAIN PLANTHW:275514,576 population served2012
PAXTON STPHW:278674,473 population served2012
OREGON STPHW:278234,400 population served2012
DWIGHT STPHW:278844,363 population served2012

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.

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