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

Wastewater treatment plants in the United States

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14,626 inventory records · HydroWASTE v1.0 / United States

Data years: 2008, 2012. The inventory date does not establish current operation.

States

14,626 results

CompareNameNative sizeYear
Cobleskill V STPHW:337337,033 population served2012
LAKE MILLS WWTPHW:392907,033 population served2012
Washington Township MUA Long Valley CS_STPHW:333037,030 population served2012
IDABEL PWA STPHW:355627,030 population served2012
SOLOMONS ISLAND WWTPHW:305677,024 population served2012
CALHOUN WPCPHW:270517,021 population served2012
MONTICELLO STPHW:300157,018 population served2012
BIXBY PWA NORTH WWTHW:356707,014 population served2012
FAIRVIEW STPHW:373817,014 population served2012
Fayetteville WWTPHW:373827,007 population served2012
Yelm Wastewater Treat and ReclaimHW:387637,005 population served2012
BREWTON LAGOONHW:249927,000 population served2012
GUADALUPE WWTFHW:259267,000 population served2012
DISCOVERY BAY WWTFHW:259847,000 population served2012
Copper Mountain Consolidated MDHW:262747,000 population served2012
CRYSTAL RIVER WWFHW:269027,000 population served2012
E PEORIA SEWAGE PLT NO 3HW:276637,000 population served2012
Mill Creek Water Reclamation DistriHW:278447,000 population served2012
ATLANTIC WWTPHW:284957,000 population served2012
JOPPATOWNE WWTPHW:306907,000 population served2012
LEWISTOWN WWT FACILITYHW:324797,000 population served2012
PLATTSMOUTH WWTPHW:329947,000 population served2012
PETERS TWP BRUSH RUN STPHW:367257,000 population served2012
WEST MIFFLIN NEW ENGLAND STPHW:368157,000 population served2012
LATTA WWTFHW:371137,000 population served2008
BJWSA_ Parris Island Recruit DepotHW:372797,000 population served2008
Dalhart WWTPHW:375877,000 population served2012
Old River WWTPHW:380377,000 population served2012
JASPER STREET WWTPHW:380667,000 population served2012
Boerne WWTPHW:380737,000 population served2012
Bernardsville Borough CS_Septics_STPHW:333076,990 population served2012
BATESVILLE WWTPHW:283536,984 population served2012
BRIDGEPORT WWTPHW:388616,984 population served2012
BLAKELY WPCPHW:270466,980 population served2012
SKOWHEGAN WWTFHW:304516,977 population served2012
East Aurora V WWTPHW:340886,973 population served2012
BANGOR BORO STPHW:363146,972 population served2012
CRETE WWTPHW:327596,960 population served2012
DUNCANSVILLE BOROHW:366366,960 population served2012
GREENVILLE STWHW:278826,955 population served2012
Delphos WWTP and Sewer SystemHW:350736,944 population served2012
TWIN LAKES WWTPHW:394846,942 population served2012
DADE CITY WPCPHW:268366,937 population served2012
GREEN VALLEY GLENWOOD PSD WWTPHW:389296,937 population served2012
MINERSVILLE STPHW:363326,930 population served2012
HARTFORD CITY WWTPHW:282066,928 population served2012
SEDALIA SOUTHEAST WWTPHW:317516,918 population served2012
Frisco Sanitation DistrictHW:263586,900 population served2012
NEVADA WWTPHW:289106,900 population served2012
Enchanted Valley Hidalgo Co MUDHW:376886,900 population served2012
Anna WWTPHW:378206,900 population served2012
SEMINOLE WWTHW:359816,899 population served2012
EPHRATA S_T FACILITYHW:387066,890 population served2012
Canal Winchester WWTP and SewersHW:350216,888 population served2012
TOPPENISH TREATMENTHW:386706,888 population served2012
Calera WWTP Buxahatchee CreekHW:249956,874 population served2012
FLORENCE STPHW:360556,865 population served2012
SOUTH HILL WWTPHW:383486,862 population served2012
MEDICAL LAKE STPHW:386066,860 population served2012
Ayer Water Pollution ControlHW:307716,857 population served2012
WEST HILLS AREA STPHW:367306,855 population served2012
PORTLAND WWTPHW:282856,852 population served2012
Geronimo Creek WWTPHW:380536,850 population served2012
Marin Co SD 5 WWTFHW:258656,849 population served2012
ESTHERVILLE WWTPHW:286696,848 population served2012
ROOSEVELTHW:381516,847 population served2012
Perry V WWTPHW:341106,845 population served2012
BREAUX BRIDGE STPHW:303096,837 population served2012
Waynesville WWTP and Sewer SystemHW:354886,836 population served2012
BRIDGEPORT BORO STPHW:362816,835 population served2012
BOONVILLE WWTPHW:281066,834 population served2012
LEITCHFIELD STPHW:299996,834 population served2012
JOHN UMSTEAD WWTP BUTNERHW:342476,829 population served2012
Corning WWTPHW:261026,825 population served2012
GREENVILLE STPHW:299146,824 population served2012
West Carthage V Joint STPHW:338556,823 population served2012
SULLIVAN WWTPHW:318786,822 population served2012
ORLAND WWTFHW:261366,815 population served2012
NEW MARTINSVILLE WWTPHW:390346,812 population served2012
ALTAVISTA STPHW:383616,810 population served2012
LAUREL WWTPHW:325206,806 population served2012
Willard WWTP and Sewer SystemHW:355076,806 population served2012
LITCHFIELD WPCFHW:265666,800 population served2012
Aztec City ofHW:334696,800 population served2012
FUQUAY VARINA TERRIBLE CRK WWTPHW:344166,800 population served2012
Upper Sandusky WWTP and Sewer SystemHW:354726,800 population served2012
PEA RIDGE PSD WWTP AHW:388206,800 population served2012
POJOAQUE PUEBLO STPHW:334716,798 population served2012
VALLEY CENTER WWTPHW:294406,776 population served2012
GREENVILLE WWTPHW:251676,773 population served2012
MACON WWTPHW:323286,771 population served2012
BADEN BORO STPHW:367086,770 population served2012
Childress WWTPHW:375846,770 population served2012
ORTING S_T FACILITYHW:386286,770 population served2012
Morrilton WWTPHW:255226,767 population served2012
Crossett WWTPHW:254726,763 population served2012
NORTHFIELD WCFHW:382576,760 population served2012
Mansfield Department of Public WorkHW:308026,751 population served2012
Russell FW Stephenson WWTFHW:268306,750 population served2012
KITTERY WPCFHW:304866,750 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.