Horseshoe Bend WWTP
Lagoon Dr, Horseshoe Bend, ID 83629 · Boise County · Publicly Owned Treatment Works
- Average flow
- 0.08 MGD
- Design flow
- 0.18 MGD
- NPDES permit
- ID0021024
- Administratively continued
- Permit expires
- July 2023
- Population served
- 715
- CWNS 2022
Horseshoe Bend WWTP is a publicly owned wastewater treatment works in Horseshoe Bend, Boise County, Idaho treating an average of 0.08 million gallons per day against a permitted design capacity of 0.18 MGD, serving about 715 residents. It discharges under NPDES permit ID0021024 (administratively continued), which expires in July 2023, with 2 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in October 1976.
Treatment technology
One treatment structure or unit process identified at Horseshoe Bend WWTP.
Available with a free Klarifi account
See the full treatment train at Horseshoe Bend WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 2
- 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 Horseshoe Bend WWTP in EPA's ICIS system.
- Formal actions
- 1
- 0 since FY2020
- EPA inspections
- 0
- none on record
Latest case · Oct 1976
HORSESHOE BEND/TUDOR
Judicial case · CWA, NPDES Discharge without a Permit · Voluntarily Dismissed After Filing
Source: EPA ECHO, civil enforcement case 10-1976-0003.
Full case history with a free Klarifi account
Every action against Horseshoe Bend WWTP with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
Decision-makers at Horseshoe Bend WWTP.
No verified contacts on file yet
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Nearby wastewater treatment plants in Idaho
Emmett · 17 mi away
1.68 MGD
Garden City · 18 mi away
50.91 MGD
Star · 21 mi away
1.52 MGD
Meridian · 28 mi away
1.3 MGD
Nampa · 29 mi away
10.69 MGD
New Plymouth · 30 mi away
—
Notus · 33 mi away
0.06 MGD
Greenleaf · 35 mi away
0.06 MGD
Horseshoe Bend 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 · Equalization tank · Centrate · all terms