Worldwide wastewater treatment observatory · 
United States · Oregon
Aguas SB Observatory · public data to understand water
WWTP HALFWAY STP
Oregon · official identifier CWNS2022_41000156001
not reportedMGD reported design flow (year not reported)
EPA Clean Watersheds Needs Survey 2022 · official identifier CWNS2022_41000156001 · reported size not reported MGD reported design flow · reported treatment: Secondary · data year year not reported. nearest inventoried plant at 13.0 km. Reported data with their source; estimates are not measurements of the plant.
Aguas SB does not manage this wastewater treatment plant.
WHAT THE DATA REPORT
Reported data official data · 2022
| Treatment | Secondary · reported levels |
|---|---|
| Reported coordinates | 44.8773, -117.1058 precision reported by the source: 4 m what it means |
| Source and year | EPA Clean Watersheds Needs Survey 2022 · dataset record |
REGULATORY REFERENCES
Referencia normativa: United States
Regulatory framework of United States. Individual applicability is not determined in this profile.
NEARBY PLANTS
Nearby wastewater treatment plants
| Plant | Distance | MGD reported design flow | Treatment |
|---|---|---|---|
| RICHLAND STP | 13.0 km | not reported | Secondary |
| CAMBRIDGE SEWAGE LAGOON | 48.5 km | 0.04 | Secondary |
| JOSEPH STP | 54.2 km | 0.18 | Secondary |
| HUNTINGTON STP | 54.4 km | 0.1 | Secondary |
| COUNCIL STP | 54.5 km | 1.6 | Secondary |
Distances are between reported coordinates; proximity does not establish a hydraulic connection.
QUESTIONS
Frequently asked questions about this plant
What capacity does WWTP HALFWAY STP report?
Reported size: not reported MGD reported design flow. Units are retained without conversion.
What treatment is reported?
Treatment Secondary. Nitrogen, phosphorus and UV are shown only when explicitly reported.
SOURCE AND CORRECTIONS
Source
reported data · EPA Clean Watersheds Needs Survey 2022 · data year not reported · edition 2022 · source licence: Public domain (EPA geospatial default; see LICENCIA.txt) · JSON for this plant · suggest a correction · catalogue 2026-11-06. Reported data, not a current inspection; no compliance judgements.