St Anthony Sewage Lagoon
2280 E 500 N, Saint Anthony, ID 83445 · Fremont County · Publicly Owned Treatment Works
- Average flow
- 0.26 MGD
- Design flow
- 0.8 MGD
- NPDES permit
- ID0020401
- Administratively continued
- Permit expires
- November 2014
- Population served
- 4,525
- CWNS 2022
St Anthony Sewage Lagoon is a publicly owned wastewater treatment works in Saint Anthony, Fremont County, Idaho treating an average of 0.26 million gallons per day against a permitted design capacity of 0.8 MGD, serving about 4,525 residents. It discharges under NPDES permit ID0020401 (administratively continued), which expires in November 2014, with 7 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in September 2005.
Treatment technology
One treatment structure or unit process identified at St Anthony Sewage Lagoon.
Available with a free Klarifi account
See the full treatment train at St Anthony Sewage Lagoon: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 7
- Effluent violations
- 3
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 St Anthony Sewage Lagoon in EPA's ICIS system.
- Formal actions
- 1
- 0 since FY2020
- Penalties assessed
- $33,000
- all cases
- Compliance actions
- $2.5M
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · Sep 2005
CITY OF ST. ANTHONY WASTEWATER TREATMENT FACILITY
Administrative order · CWA, NPDES Permit Violations · Final Order With Penalty · Penalty $33,000 · Compliance actions $2.5M
EPA's description of the case:
“Violation of Permit # ID0020401 (City of St. Anthony) 1,141 NPDES effluent violations (BOD, Chlorine, pH, & Fecal Coliform) between Sept. 2001 & Feb. 2005.”
Source: EPA ECHO, civil enforcement case 10-2005-0230.
Full case history with a free Klarifi account
Every action against St Anthony Sewage Lagoon with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
Decision-makers at St Anthony Sewage Lagoon.
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
Rexburg · 9 mi away
3.22 MGD
Rigby · 20 mi away
0.68 MGD
Ririe · 22 mi away
0.22 MGD
Roberts · 26 mi away
0.04 MGD
Driggs · 33 mi away
0.37 MGD
Shelley · 46 mi away
1.82 MGD
Firth · 51 mi away
0.04 MGD
Pocatello · 82 mi away
6.38 MGD
St Anthony Sewage Lagoon: 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 March 28, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Centrate · Ozonation · all terms