Payette WWTP
522 River St, Payette, ID 83661 · Payette County · Publicly Owned Treatment Works
- Average flow
- 0.84 MGD
- Design flow
- 2.88 MGD
- NPDES permit
- ID0020672
- Administratively continued
- Permit expires
- October 2019
- Population served
- 8,415
- CWNS 2022
Payette WWTP is a publicly owned wastewater treatment works in Payette, Payette County, Idaho treating an average of 0.84 million gallons per day against a permitted design capacity of 2.88 MGD, serving about 8,415 residents. It discharges under NPDES permit ID0020672 (administratively continued), which expires in October 2019, with 1 recorded violation in the last three years.
Treatment technology
2 treatment structures and unit processes identified at Payette WWTP.
Available with a free Klarifi account
See the full treatment train at Payette WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 1
- Effluent violations
- 1
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Payette WWTP.
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Nearby wastewater treatment plants in Idaho
Payette · 2 mi away
0.7 MGD
Fruitland · 5 mi away
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New Plymouth · 10 mi away
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Weiser · 12 mi away
0.87 MGD
Parma · 20 mi away
0.18 MGD
Emmett · 25 mi away
1.68 MGD
Notus · 25 mi away
0.06 MGD
Wilder · 28 mi away
0.11 MGD
Payette WWTP: frequently asked questions
Sources and methodology
Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.
Data refreshed October 26, 2026; facility record last updated May 17, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Oxidation ditch · Anaerobic digester · all terms