Riverside Water And Sewer District WWTP
Hidden Village Dr, Orofino, ID 83544 · Clearwater County · Publicly Owned Treatment Works
- Average flow
- 0.28 MGD
- Design flow
- 0.4 MGD
- NPDES permit
- ID0024503
- Effective
- Permit expires
- December 2026
- Population served
- 2,117
- CWNS 2022
Riverside Water And Sewer District WWTP is a publicly owned wastewater treatment works in Orofino, Clearwater County, Idaho treating an average of 0.28 million gallons per day against a permitted design capacity of 0.4 MGD, serving about 2,117 residents. It discharges under NPDES permit ID0024503 (effective), which expires in December 2026, with 4 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in May 2024.
Treatment technology
2 treatment structures and unit processes identified at Riverside Water And Sewer District WWTP.
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See the full treatment train at Riverside Water And Sewer District WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 4
- Effluent violations
- 2
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
EPA enforcement history
Federal civil enforcement cases, compliance inspections and informal actions recorded for Riverside Water And Sewer District WWTP in EPA's ICIS system.
- Formal actions
- 1
- 1 since FY2020
- Penalties assessed
- $1,472
- all cases
- Compliance actions
- $600
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · May 2024
Riverside Water and Sewer District
Administrative order · CWA, NPDES Permit Violations · Final Order With Penalty · Penalty $1,472 · Compliance actions $600
EPA's description of the case:
“On May 6th, 2024, EPA Region 10 filed an expedited settlement agreement resolving violations of the Riverside Water and Sewer District Wastewater Treatment Plant (Facility) National Pollution…”
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Source: EPA ECHO, civil enforcement case 10-2024-0026.
Full case history with a free Klarifi account
Every action against Riverside Water And Sewer District WWTP with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
Decision-makers at Riverside Water And Sewer District WWTP.
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Nearby wastewater treatment plants in Idaho
Orofino · 1 mi away
0.02 MGD
Kendrick · 17 mi away
0.03 MGD
Juliaetta · 18 mi away
0.03 MGD
Culdesac · 19 mi away
0.06 MGD
Nezperce · 19 mi away
0.008 MGD
Craigmont · 20 mi away
0.3 MGD
Weippe · 21 mi away
0.27 MGD
Elk River · 21 mi away
0.06 MGD
Riverside Water And Sewer District 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 November 7, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Lift station · Sludge dewatering · all terms