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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
Brady WWTPHW:380955,100 population served2012
MONTROSE MUN AUTHHW:364315,095 population served2012
ALLEGAN STPHW:311045,091 population served2012
BUFFALO WWTPHW:321525,084 population served2012
LITTLE RIVER STPHW:271335,082 population served2012
Dansville V WWTPHW:339805,082 population served2012
WEST SALEM WWTPHW:395095,076 population served2012
CARTHAGE POTWHW:314165,075 population served2012
HARRIMAN WWTPHW:373975,071 population served2012
Le Roy V WWTPHW:339745,070 population served2012
BIRDSBORO STPHW:363015,064 population served2012
Chagrin Falls WWTP and Sewer SystemHW:350305,055 population served2012
Barron Cameron WWTPHW:390955,053 population served2012
CENTREVILLE BRENT WWTPHW:250015,050 population served2012
Port St Joe STPHW:269995,050 population served2012
BATH BORO STPHW:363395,048 population served2012
ROCK ISLAND STP SWHW:276745,040 population served2012
ANGELS CAMP WWTFHW:260795,030 population served2012
GORDON ROAD WPCPHW:271435,026 population served2012
Caribou Utility DistrictHW:303965,020 population served2012
WARWICK TWP FISH CK STPHW:369915,002 population served2012
CHELSEA STPHW:309785,001 population served2012
Cave Creek WRFHW:253415,000 population served2012
Holbrook WWTFHW:253465,000 population served2012
Snowflake WWTFHW:253495,000 population served2012
Colorado River Joint VentureHW:253925,000 population served2012
HILMAR WTPHW:261265,000 population served2012
Imperial Commun Colleges Dist WWTFHW:262005,000 population served2012
Eastern Adams County MDHW:265295,000 population served2012
THOMASTON WPCFHW:266085,000 population served2012
FORT MEADE STPHW:268615,000 population served2012
BONIFAY STPHW:269305,000 population served2012
Caseyville Township West FacilityHW:276315,000 population served2012
WINCHESTER WWTPHW:281625,000 population served2012
West Central Consercancy DistrictHW:283895,000 population served2012
IRVINE STPHW:299885,000 population served2012
BAY SPRINGS INDUSTRIAL PARKHW:313905,000 population served2012
SIDNEY WWTFHW:325175,000 population served2012
OGALLALA WWTP 1HW:329635,000 population served2012
Carmel T SD 2 STPHW:336395,000 population served2012
Fallsburg T Loch Sheldrake STPHW:336565,000 population served2012
Shawangunk TWallkill SD STPand ISDSHW:336825,000 population served2012
Ontario T WWTP and OnsitesHW:340245,000 population served2012
Walworth T SD 1 STP and OnsitesHW:340445,000 population served2012
Sewer District 700 ChippewaHW:352655,000 population served2012
Saint Clairsville North WWTPHW:353885,000 population served2012
WAGONER CO 4 WWTHW:360055,000 population served2012
LIMERICK TWP POSSUM HOLLOW STPHW:362225,000 population served2012
MAIDENCREEK TWP STPHW:363375,000 population served2012
WAYMART STPHW:364545,000 population served2012
PETERS TWP DONALDSONS XROADS STPHW:367245,000 population served2012
BROCKWAY AREA SEWAGE AUTHORITYHW:369355,000 population served2012
CALHOUN FALLS WWTPHW:371215,000 population served2008
Saluda_Brushy Creek WWTPHW:372375,000 population served2008
Rockdale WWTPHW:377935,000 population served2012
Teton Village WWTPHW:397285,000 population served2012
MARKSVILLE LAGOON WWTPHW:302244,998 population served2012
MOOREFIELD WWTPHW:388594,995 population served2012
GLASSPORT BORO STPHW:368194,993 population served2012
WINONA POTWHW:316584,991 population served2012
ST ROBERT WWTPHW:317864,990 population served2012
ERWIN WWTPHW:342604,990 population served2012
Fripp Island PSDHW:372584,990 population served2008
LEXINGTON WWTPHW:321854,987 population served2012
FLORALA_LOCKHART WWTPHW:251624,982 population served2012
ISLE OF PALMS SCHW:372094,980 population served2008
Maunabo WWTPHW:397804,975 population served2012
LIVERMORE FALLS WWTFHW:304324,965 population served2012
Sunapee WWTFHW:332244,961 population served2012
Marble Falls WWTPHW:377864,960 population served2012
SYLVESTER LASHW:272984,948 population served2012
ANSON MADISON WWTFHW:304014,945 population served2012
SHELDON WWTPHW:290344,937 population served2012
OSCEOLA WWTP SOUTHHW:289424,929 population served2012
SPARTA STPHW:375144,925 population served2012
South Henry County RWDHW:282714,924 population served2012
DAMASCUS WWTPHW:306824,920 population served2012
TASS Niles Ferry WWTFHW:374744,920 population served2012
East Palestine WWTP and Sewer SystemHW:348134,917 population served2012
UNION GROVE WWTPHW:394874,916 population served2012
SLINGER STPHW:394504,915 population served2012
VIDALIA MAIN PONDHW:302384,914 population served2012
SCOTT STPHW:301934,912 population served2012
ROMEO VILLAGE STPHW:309554,911 population served2012
BECKER WWTPHW:312774,911 population served2012
Greenfield WWTP and Sewer SystemHW:351544,906 population served2012
BLUE RIDGE PAPER PRODUCTSHW:342634,903 population served2012
Delmar STP and Coll SysHW:306394,902 population served2012
PEMBROKE WWTPHW:343664,900 population served2012
Brown Twp_Malvern Sewer DistrictHW:352524,900 population served2012
FAIRCHANCE GEORGES STPHW:367734,900 population served2012
Allen s Creek WWTPHW:380334,900 population served2012
EVANSVILLE WWTPHW:392114,900 population served2012
Greenwich Township GCUA CS_STPHW:333484,899 population served2012
RICHMOND WWTPHW:309594,897 population served2012
Aurora Westerly WWTP and SewersHW:349594,897 population served2012
BENTON STP and CSHW:299314,893 population served2012
WAYNESBORO WPCPHW:273144,891 population served2012
VCUD Southeast Regional STPHW:268844,890 population served2012
AMITE CITY STPHW:303194,890 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.