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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
JICARILLA APACHE NATIONHW:334042,623 population served2012
NEW HAVEN WWTPHW:389212,623 population served2012
WILLIAMSBURG STPHW:291412,622 population served2012
DELAWARE CITY STPHW:266352,621 population served2012
SANTA CLAUS WWTPHW:283662,620 population served2012
PAYNESVILLE WWTPHW:312732,616 population served2012
Sunderland Collection SystemHW:307662,615 population served2012
WAVERLY STPHW:330782,611 population served2012
BURNHAM BORO AUTHHW:365462,611 population served2012
CHEWELAH S_T FACILITYHW:385522,610 population served2012
Belvidere Town Warren Co Pequest River MUA CS_STPHW:333862,608 population served2012
SOUTH SHORE STPand CSHW:300432,607 population served2012
Canadian WWTPHW:375822,604 population served2012
Clinton East WWTPHW:257502,602 population served2012
NILAND WWTFHW:261942,600 population served2012
SILT Town ofHW:263752,600 population served2012
Granby Sanitation DistrictHW:264462,600 population served2012
BCUD _ North Regional WWTPHW:267282,600 population served2012
METAMORA SOUTH STPHW:277062,600 population served2012
BLOOMFIELD WWTPHW:282582,600 population served2012
COTTONPORT WWTFHW:301212,600 population served2012
RISING SUN STPHW:305592,600 population served2012
MYERSVILLE WWTPHW:306712,600 population served2012
MENDENHALL POTWHW:315422,600 population served2012
Wolfeboro WWTFHW:331582,600 population served2012
Newington WWTFHW:332072,600 population served2012
Saugerties T Glasco STPHW:336802,600 population served2012
North Castle T SD _ STPHW:336982,600 population served2012
JONES WWTHW:356552,600 population served2012
WINFIELD WWTPHW:389862,600 population served2012
MONTPELIER SEW TRT FACHW:273792,597 population served2012
RUTLEDGE CREEK WWTPHW:383672,596 population served2012
Anson WWTPHW:377042,594 population served2012
NOKOMIS STPHW:278992,590 population served2012
SABETHA WWTPHW:294002,589 population served2012
BRUSLY STPHW:303382,589 population served2012
Versailles WWTP and Sewer SystemHW:348682,589 population served2012
OAKLAND CITY WWTPHW:280982,588 population served2012
IOWA SEWERAGE SYSTEMHW:301482,588 population served2012
LAKEWOOD WASTEWATER AUTHHW:308862,587 population served2012
OKANOGAN S_T FACHW:387352,585 population served2012
HOMINY WWTHW:356852,584 population served2012
Deuel Vocational Institution WWTFHW:260762,582 population served2012
SOUTH WHITLEY WWTPHW:281822,582 population served2012
Groveton WWTFHW:331672,578 population served2012
WILTON WWTPHW:291432,577 population served2012
GLENROCK LAGOONHW:396832,576 population served2012
Lake Village WWTPHW:255012,575 population served2012
NEWBERN STPHW:374712,574 population served2012
ROCK RAPIDS WWTPHW:290062,573 population served2012
Dryden V STPHW:339642,572 population served2012
OLIVIA WWTPHW:312452,570 population served2012
OROVILLE S_T FACILITYHW:386272,570 population served2012
Marked Tree WWTPHW:255782,566 population served2012
SOUTH HUTCHINSON WWTPHW:292892,562 population served2012
Thomaston WPCFHW:304992,562 population served2012
MILLERSBURG BORO STPHW:363652,562 population served2012
BELMOND WWTPHW:285132,560 population served2012
Warren Township CS _ Stage IV STPHW:332932,560 population served2012
JEFFERSON STPHW:360442,560 population served2012
WintersHW:380922,560 population served2012
KIMBALL WWTP 2HW:328902,559 population served2012
Covington WWTP and Sewer SystemHW:350642,559 population served2012
DIAMOND STPHW:279702,557 population served2012
West Lafayette WWTP and Sewer SystemHW:354962,557 population served2012
MOORHEAD POTWHW:315472,555 population served2012
ELDRED BORO STPHW:370052,554 population served2012
NEWBERRY STPHW:311532,553 population served2012
DUNBAR TWP MUN AUTH STPHW:368452,553 population served2012
DUNKIRK WWTPHW:281712,552 population served2012
CENTERVILLE WWTPHW:283752,552 population served2012
MUDDY CREEK WWTPHW:341612,552 population served2012
ANTLERS WWTHW:359652,552 population served2012
FRENCH LICK WWTPHW:283362,551 population served2012
LE CENTER STPHW:313692,551 population served2012
CHICORA BORO SEW AUTHHW:369972,551 population served2012
CLAYTON WWTPHW:251442,550 population served2012
W GLENWOOD SPRINGS STPHW:263372,550 population served2012
Freer WWTPHW:376502,550 population served2012
GREENTOWN WWTPHW:282732,546 population served2012
HUXLEY WWTPHW:287552,546 population served2012
PURCELLVILLE STPHW:384042,546 population served2012
Occidental WWTFHW:257942,543 population served2012
BONNERS FERRY S_T PLANTHW:274132,543 population served2012
ROCKY GAP STATE PARKHW:306602,542 population served2012
ROCK VALLEY WWTPHW:290072,540 population served2012
CENTRE HALL POTTER STPHW:366192,540 population served2012
TOLEDO WWTPHW:290852,539 population served2012
LAUR_MAX AIRPORT WWTPHW:343872,538 population served2012
TOPTON BORO STPHW:363912,538 population served2012
ROPERHW:371732,537 population served2008
BERNALILLO STPHW:334622,536 population served2012
EL PASO STPHW:276562,535 population served2012
ELDRIDGE WWTPHW:286552,535 population served2012
MARENGO STLHW:288572,535 population served2012
WINAMAC WWTPHW:283452,534 population served2012
ROBERTSDALE WWTPHW:250922,533 population served2012
STEELE AERATED LAGOONHW:320892,532 population served2012
Blount County West LagoonHW:251292,530 population served2012
CENTRAL CITY STPHW:278122,529 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.