Glenns Ferry WWTP
901 S Martell Ln, Glenns Ferry, ID 83623 · Elmore County · Publicly Owned Treatment Works
- Average flow
- 0.09 MGD
- Design flow
- 0.5 MGD
- NPDES permit
- ID0022004
- Administratively continued
- Permit expires
- December 2016
- Population served
- 1,282
- CWNS 2022
Glenns Ferry WWTP is a publicly owned wastewater treatment works in Glenns Ferry, Elmore County, Idaho treating an average of 0.09 million gallons per day against a permitted design capacity of 0.5 MGD, serving about 1,282 residents. It discharges under NPDES permit ID0022004 (administratively continued), which expires in December 2016, with 8 recorded violations in the last three years. EPA has recorded 2 formal enforcement actions naming the plant, the latest in October 2019.
Treatment technology
2 treatment structures and unit processes identified at Glenns Ferry WWTP.
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See the full treatment train at Glenns Ferry WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 8
- 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 Glenns Ferry WWTP in EPA's ICIS system.
- Formal actions
- 2
- 0 since FY2020
- Penalties assessed
- $2,000
- all cases
- Compliance actions
- $1,000
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · Oct 2019
CITY OF GLENNS FERRY (CWA NPDES)
Administrative order · CWA, NPDES Permit Violations · Final Order With Penalty · Penalty $2,000 · Compliance actions $1,000
EPA's description of the case:
“Region 10 Settles with City of Glenns Ferry WWTP in Idaho for CWA Violations On September 5, 2019, Region 10 filed a consent agreement and final order resolving violations of the Clean Water Act by…”
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Source: EPA ECHO, civil enforcement case 10-2019-0122.
Full case history with a free Klarifi account
Every action against Glenns Ferry WWTP with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
Decision-makers at Glenns Ferry WWTP.
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Nearby wastewater treatment plants in Idaho
Buhl · 35 mi away
0.28 MGD
Fairfield · 38 mi away
—
Jerome · 42 mi away
3.33 MGD
Filer · 43 mi away
0.18 MGD
Shoshone · 45 mi away
0.13 MGD
Hansen · 58 mi away
0.08 MGD
Richfield · 58 mi away
0.04 MGD
Ketchum · 69 mi away
1.14 MGD
Glenns Ferry 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 August 4, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Sludge dewatering · Biological nutrient removal · all terms