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

Wastewater treatment plants in the United States

17,009 inventory records · EPA Clean Watersheds Needs Survey 2022

Data years: 2022. The inventory date does not establish current operation.

States

17,009 results

Name	Native size	Year
LOWER BRULE STPCWNS2022_46000547001	Not reported MGD (million gallons per day)	Not reported
MINA LAKE STPCWNS2022_46000552001	Not reported MGD (million gallons per day)	Not reported
CROOKS WWTFCWNS2022_46000553001	Not reported MGD (million gallons per day)	Not reported
ST. ONGE STPCWNS2022_46000556001	Not reported MGD (million gallons per day)	Not reported
CORSON LAGOONSCWNS2022_46000563001	Not reported MGD (million gallons per day)	Not reported
LEGION LAKE RESORTCWNS2022_46000580001	Not reported MGD (million gallons per day)	Not reported
CUSTER ST PK GAME LODGECWNS2022_46000580004	Not reported MGD (million gallons per day)	Not reported
SYLVAN LAKE RESORTCWNS2022_46000580005	Not reported MGD (million gallons per day)	Not reported
LaGrange, Town ofLagrange	Not reported MGD (million gallons per day)	2022

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.

US EPA · NPDES Permit Basics

References reviewed: 2026-11-06. Individual applicability: undetermined. This profile does not establish authorization or compliance.