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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
Silverlake WWTPHW:3802912,100 population served2012
Imperial Oaks WWTPHW:3804312,095 population served2012
Pennsville Township SA CS_Septics_STPHW:3333712,083 population served2012
RUNNING SPRINGS WWTFHW:2622912,065 population served2012
LYNDEN STPHW:3860112,060 population served2012
Jonesboro West WWTPHW:2542012,033 population served2012
MANDEVILLE STPHW:3016712,018 population served2012
Washington Co SD2 Fort EdwardSTPHW:3381812,018 population served2012
Juneau Douglas Sewer SystemHW:2525612,000 population served2012
Hughson WWTFHW:2604712,000 population served2012
Ralph W Chapman WRFHW:2624412,000 population served2012
STEAMBOAT SPRINGS WWTPHW:2635012,000 population served2012
Sanford South WRFHW:2668412,000 population served2012
Cocoa Beach WRFHW:2672712,000 population served2012
WINTER HAVEN STP 2HW:2685612,000 population served2012
ROME COOSA WPCPHW:2712212,000 population served2012
LaSalle WWTPHW:2779812,000 population served2012
MENDOTA STPHW:2796912,000 population served2012
MARTINSVILLE WWTPHW:2801312,000 population served2012
DRAVO TREATMENT PLANTHW:3037012,000 population served2012
Yorktown T YHeights SD 1 and Decentralized Onsite WWTSHW:3360912,000 population served2012
Wallkill T Sewers and STPOn SitesHW:3363412,000 population served2012
South Harnett Regional WWTPHW:3426212,000 population served2012
Ironton WWTP and Sewer SystemHW:3518012,000 population served2012
Urbana WWTP and Sewer SystemHW:3547312,000 population served2012
OCEAN DRIVE WWTPHW:3711712,000 population served2008
BUSH RIVER PLANTHW:3716312,000 population served2008
Eastbridge STPHW:3742612,000 population served2012
Weslaco South WWTPHW:3763712,000 population served2012
Webster WWTPHW:3801112,000 population served2012
COMA PSD FITZPATRICK WWTPHW:3899112,000 population served2012
WEST PLAINS WWTPHW:3175711,986 population served2012
MARYVILLE WWTPHW:3198311,972 population served2012
WOODWARD WWTHW:3555911,953 population served2012
Squabble Creek WWTPHW:3787611,950 population served2012
PORTAGE LAKE WSAHW:3113711,945 population served2012
MCHENRY CENTRAL STPHW:2776111,928 population served2012
Malone V STPHW:3380011,925 population served2012
COVINGTON STPHW:3843211,925 population served2012
Wilmington WWTP and Sewer SystemHW:3551211,921 population served2012
IMMOKALEE WWTPHW:2700311,900 population served2012
North Key Largo Utility CorporationHW:2682511,886 population served2012
COALINGA WWTFHW:2612011,868 population served2012
WASHINGTON WWTPHW:3413511,860 population served2012
Coolidge WWTFHW:2536611,825 population served2012
OLD TOWN WWTFHW:3044211,825 population served2012
SEASIDE STPHW:3618211,820 population served2012
Massena V STPHW:3388411,809 population served2012
Coshocton WWTP and Sewer SystemHW:3506311,800 population served2012
Amherst WWTP and Sewer SystemHW:3482411,797 population served2012
WESTERN RACINE CO SD STPHW:3955311,790 population served2012
Arrow Wood STPHW:3038411,774 population served2012
CRESTVIEW STPHW:2683311,750 population served2012
Galion WWTP and Sewer SystemHW:3512011,750 population served2012
MARINETTE WWTPHW:3931211,749 population served2012
DERBY WPCFHW:2654511,741 population served2012
Wanaque Valley RSA CS_STPHW:3325611,725 population served2012
CADILLAC TWP WTWHW:3117611,707 population served2012
HOLLY HILL STPHW:2688711,700 population served2012
GUNPOWDER CREEK WWTPHW:3416311,681 population served2012
STAYTON STPHW:3604811,670 population served2012
ABBEVILLE STPHW:3010511,667 population served2012
PLOVER WWTPHW:3939111,651 population served2012
CALIF MENS COLONY WWTFHW:2592211,637 population served2012
LEMOYNE BORO STPHW:3651211,631 population served2012
PIKEVILLEHW:2987211,625 population served2012
Florham Park Borough SA CS_Septics_STPHW:3324511,620 population served2012
PATTERSON WWTFHW:2606011,606 population served2012
MT WASHINGTONHW:3002111,604 population served2012
Athol Dept of Public WorksHW:3073011,601 population served2012
El Campo WWTPHW:3767411,601 population served2012
Saint Marys WWTP and Sewer SystemHW:3539111,584 population served2012
Magnolia WWTPHW:2543811,577 population served2012
Florence Twp STPHW:3337311,567 population served2012
MWRA clintonHW:3072511,563 population served2012
MSD FLOYDS FORK STPHW:2985511,550 population served2012
PILOT CREEK KINGS MTN WWTPHW:3419111,549 population served2012
CHARLEROI BORO AUTHHW:3671411,543 population served2012
DONNER SUMMIT WWTFHW:2600311,534 population served2012
FERNDALE STPHW:3857711,530 population served2012
Bergen County UA Edgewater MUA STPHW:3326711,513 population served2012
Suffern V STPHW:3365011,506 population served2012
Lares WWTPHW:3975311,506 population served2012
MT AIRY WWTPHW:3439711,500 population served2012
EUNICE STPHW:3012911,497 population served2012
Provincetown Dept of Public WorksHW:3078511,496 population served2012
KILLINGLY WPCFHW:2656411,490 population served2012
Newark V WWTPHW:3402111,487 population served2012
GRAFTON WWTPHW:3923511,481 population served2012
Peachtree City Rockaway WPCPHW:2726911,458 population served2012
HOOVER INVERNESS WWTPHW:2504511,455 population served2012
HEALDSBURG WWTFHW:2582511,442 population served2012
MAYFIELD STPHW:2990111,442 population served2012
Port Orchard WWTPHW:3864011,440 population served2012
INDIANOLA POTWHW:3150911,438 population served2012
CEDARBURG STPHW:3914711,436 population served2012
Conococheague WWTPHW:3069311,423 population served2012
SILVER CITY STPHW:3343711,421 population served2012
TAVARES WWTPHW:2694611,400 population served2012
East Greenbush T STPHW:3372811,400 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.