Richfield WWTP
US-26, Richfield, ID 83349 · Lincoln County · Publicly Owned Treatment Works
- Average flow
- 0.04 MGD
- Design flow
- 0.06 MGD
- NPDES permit
- ID0021211
- Administratively continued
- Permit expires
- April 2026
- Population served
- 567
- CWNS 2022
Richfield WWTP is a publicly owned wastewater treatment works in Richfield, Lincoln County, Idaho treating an average of 0.04 million gallons per day against a permitted design capacity of 0.06 MGD, serving about 567 residents. It discharges under NPDES permit ID0021211 (administratively continued), which expires in April 2026, with 19 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in October 2018.
Treatment technology
2 treatment structures and unit processes identified at Richfield WWTP.
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See the full treatment train at Richfield WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 19
- Effluent violations
- 11
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 Richfield WWTP in EPA's ICIS system.
- Formal actions
- 1
- 0 since FY2020
- Penalties assessed
- $13,500
- all cases
- Compliance actions
- $8,652
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · Oct 2018
NPDES ID0021211 - CITY OF RICHFIELD, IDAHO - (CWA NPDES)
Administrative order · CWA, NPDES Permit Violations · Final Order With Penalty · Penalty $13,500 · Compliance actions $8,652
EPA's description of the case:
“Region 10 Settles with City of Richfield (Richfield, ID) for CWA Violations On 08/17/2018, Region 10 filed a consent agreement and final order resolving violations of the Clean Water Act by City of…”
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Source: EPA ECHO, civil enforcement case 10-2018-0306.
Full case history with a free Klarifi account
Every action against Richfield WWTP with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
Decision-makers at Richfield WWTP.
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Nearby wastewater treatment plants in Idaho
Shoshone · 15 mi away
0.13 MGD
Carey · 20 mi away
0.15 MGD
Jerome · 29 mi away
3.33 MGD
Hansen · 36 mi away
0.08 MGD
Fairfield · 38 mi away
—
Filer · 39 mi away
0.18 MGD
Heyburn · 39 mi away
0.43 MGD
Buhl · 43 mi away
0.28 MGD
Richfield 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 · FOG · Equalization tank · all terms