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

Wastewater treatment plants in United States · Oregon

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213 inventory records · EPA Clean Watersheds Needs Survey 2022

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

213 results

CompareNameNative sizeYear
MALIN STPCWNS2022_41000195001Not reported MGD (million gallons per day)Not reported
METOLIUS STPCWNS2022_41000205001Not reported MGD (million gallons per day)Not reported
MILTON-FREEWATER STPCWNS2022_41000207001Not reported MGD (million gallons per day)Not reported
MORO STPCWNS2022_41000212001Not reported MGD (million gallons per day)Not reported
NORTH POWDER STPCWNS2022_41000221001Not reported MGD (million gallons per day)Not reported
NYSSA STPCWNS2022_41000223001Not reported MGD (million gallons per day)Not reported
PRAIRIE CITY STPCWNS2022_41000236001Not reported MGD (million gallons per day)Not reported
RICHLAND STPCWNS2022_41000243001Not reported MGD (million gallons per day)Not reported
SENECA STPCWNS2022_41000253001Not reported MGD (million gallons per day)Not reported
SUMPTER STPCWNS2022_41000267001Not reported MGD (million gallons per day)Not reported
UNITY STPCWNS2022_41000280001Not reported MGD (million gallons per day)Not reported
VALE STPCWNS2022_41000281001Not reported MGD (million gallons per day)Not reported
WESTON STPCWNS2022_41000311001Not reported MGD (million gallons per day)Not reported

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.