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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
PLYMOUTH WWTPHW:2807710,033 population served2012
SHADY SPRING PSD GLEN MORGAN TPHW:3899310,016 population served2012
SALINE STPHW:3097510,010 population served2012
Suffolk Co SCSD 14 Parkland STPHW:3355310,010 population served2012
HIGHSPIRE BORO STPHW:3635410,007 population served2012
STURGEON BAY STPHW:3946710,005 population served2012
Pinewood Sanitary DistrictHW:2526810,000 population served2012
Show Low WWTFHW:2534810,000 population served2012
Somerton WWTFHW:2539610,000 population served2012
Resource Colorado Water and SanitatHW:2652410,000 population served2012
Fruita City ofHW:2652510,000 population served2012
WILDWOOD STPHW:2698110,000 population served2012
Gilberts Village ofHW:2784810,000 population served2012
BARDSTOWN JERRY L RILEY STPHW:2992610,000 population served2012
HARAHAN STPHW:3014210,000 population served2012
LEXINGTON WWTPHW:3289410,000 population served2012
BONANZA MOJAVE WRCHW:3314510,000 population served2012
Oswego C East Side STPHW:3395110,000 population served2012
COLUMBIA BORO STPHW:3636810,000 population served2012
TIMMONSVILLE WWTPHW:3712810,000 population served2008
BISHOPVILLE STPHW:3713310,000 population served2008
WALTERBORO WW TRT PLANTHW:3716410,000 population served2008
White House WWTPHW:3755110,000 population served2012
BRUSH CREEK WWTPHW:318579,996 population served2012
CHESTER SANDY R STPHW:371529,968 population served2008
MILES CITY WWTPHW:325309,941 population served2012
GUTHRIE PWA WWTHW:355639,925 population served2012
Trout Run WWTP and Coll SysHW:305969,917 population served2012
JOHNS CREEK WPCPHW:270199,916 population served2012
Whitecap WWTPHW:376639,900 population served2012
DOTHAN CYPRESS CREEK WWTPHW:250279,881 population served2012
Winslow WWTFHW:253519,870 population served2012
SHELTON STPHW:386519,870 population served2012
TREMONTONHW:381659,867 population served2012
Twin City WWTP and SewersHW:354659,862 population served2012
Blackwater WWTPHW:251279,850 population served2012
Yabucoa WWTPHW:397859,850 population served2012
BAKER CITY WWTPHW:360769,840 population served2012
BATH WTPHW:304069,837 population served2012
HARRISBURG STPHW:279199,832 population served2012
CATASAUQUA BORO STPHW:362939,830 population served2012
LEMARS WWTPHW:288079,826 population served2012
Potsdam V WWTPHW:338909,821 population served2012
Shelby WWTP and Sewer SystemHW:354119,821 population served2012
OZARK WWTPHW:322779,820 population served2012
HAMPTON TWP ALLISON PARK STPHW:367079,815 population served2012
WEST POINT POTW WESTHW:316549,814 population served2012
COOS BAY STP NO 2 EMPIREHW:360649,802 population served2012
WINSTED WPCFHW:266169,800 population served2012
NORWAY TOWN SD 1 STPHW:395519,800 population served2012
RICE LAKE STPHW:394209,795 population served2012
MONETT WWTPHW:322629,773 population served2012
FAIRFIELD WWTPHW:286759,768 population served2012
WHITEWATER RIVER REGIONAL WWTFHW:312339,762 population served2012
MONTICELLO STPHW:312879,761 population served2012
DANVILLE BORO STPHW:366099,758 population served2012
PARKWAY STPHW:269579,750 population served2012
CLINTON WWTPHW:343819,746 population served2012
COTTAGE GROVE STPHW:360529,745 population served2012
ELWOOD WWTPHW:280919,737 population served2012
FARMINGTON WWTP WESTHW:322339,731 population served2012
NORTH BECKLEY PSD WWTPHW:389909,726 population served2012
PERRYVILLE WWTPHW:322869,725 population served2012
AMBRIDGE BORO STPHW:367999,719 population served2012
CENTERVILLE NE WWTPHW:285569,716 population served2012
Point Peter WPCP St MarysHW:273269,700 population served2012
FRANKLIN WEST REG WCTSHW:301329,700 population served2012
ARLINGTON WWTPHW:373139,700 population served2012
MOUNT PLEASANT WWTPHW:288999,688 population served2012
DOWAGIAC STPHW:310449,683 population served2012
Boxelder Sanitation DistrictHW:263239,680 population served2012
CHOCTAW WWTHW:356489,680 population served2012
KENNETT SQUARE BOROHW:362679,680 population served2012
HEMPFIELD TWP MA DARRAGH STPHW:370449,677 population served2012
Grand Island T STP SD 2HW:340939,675 population served2012
Carrollton Regional WWTPHW:299479,668 population served2012
Rockdale County Honey Creek WPCPHW:271719,659 population served2012
CLOVERDALE WWTFHW:258049,629 population served2012
COFFEYVILLE WWTPHW:297639,628 population served2012
PERRY WPCFHW:271239,621 population served2012
HAVRE WWTFHW:325219,621 population served2012
KENDALLVILLE WWTPHW:283309,616 population served2012
WAYNESBORO STPHW:365069,614 population served2012
MERRILL STPHW:393269,614 population served2012
MONONGAHELA CITY STPHW:367139,607 population served2012
Brush City ofHW:265209,601 population served2012
HARRY STILL SR WWTPHW:249899,600 population served2012
Rotonda WWTPHW:267459,600 population served2012
BRIGHTON STPHW:309319,600 population served2012
Andrews WWTPHW:377249,600 population served2012
CHEHALIS STPHW:385519,591 population served2012
NORTH MOUSE CREEK WWTPHW:373169,590 population served2012
Savannah Crossroads WPCPHW:270439,580 population served2012
RUSSELLVILLE WWTPHW:252119,579 population served2012
PECOS STPHW:375949,570 population served2012
Oneida C STPHW:339319,567 population served2012
BATESBURG STPHW:371329,563 population served2008
JENKS PWA WWTHW:356749,557 population served2012
BREWER WASTEWATER TREATMENTHW:304119,549 population served2012
ANDOVER WWTPHW:297939,546 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.