Cascade WWTP
880 S Main St, Cascade, ID 83611 · Valley County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 0.38 MGD
- NPDES permit
- ID0023167
- Administratively continued
- Permit expires
- February 2025
- Population served
- 1,005
- CWNS 2022
Cascade WWTP is a publicly owned wastewater treatment works in Cascade, Valley County, Idaho, serving about 1,005 residents. It discharges under NPDES permit ID0023167 (administratively continued), which expires in February 2025, with 13 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in July 2024.
Treatment technology
2 treatment structures and unit processes identified at Cascade WWTP.
Available with a free Klarifi account
See the full treatment train at Cascade WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 13
- Effluent violations
- 8
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 Cascade WWTP in EPA's ICIS system.
- Formal actions
- 1
- 1 since FY2020
- Penalties assessed
- $7,620
- all cases
- EPA inspections
- 0
- none on record
Latest case · Jul 2024
CITY OF CASCADE, WWTP ESA, 402
Administrative order · CWA, NPDES Permit Violations · Final Order With Penalty · Penalty $7,620
EPA's description of the case:
“On July 26, 2024, Region 10 filed an expedited settlement agreement resolving CWA violations at the City of Cascade's wastewater treatment plant located in Cascade, Idaho. Alleged violations included…”
Unlock EPA's full description by creating a free account on Klarifi. Create a free account →
Source: EPA ECHO, civil enforcement case 10-2024-0072.
Full case history with a free Klarifi account
Every action against Cascade WWTP with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
Decision-makers at Cascade WWTP.
No verified contacts on file yet
Klarifi verifies plant and municipal decision-makers continuously. Start a free trial to browse contacts at nearby plants and flag this one for verification.
Nearby wastewater treatment plants in Idaho
Council · 25 mi away
0.33 MGD
Mccall · 27 mi away
—
Cambridge · 32 mi away
0.11 MGD
New Meadows · 35 mi away
0.92 MGD
Horseshoe Bend · 42 mi away
0.08 MGD
Weiser · 50 mi away
0.87 MGD
Emmett · 50 mi away
1.68 MGD
New Plymouth · 53 mi away
—
Cascade 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 September 13, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Activated sludge · Oxidation ditch · all terms