Kamiah Regional STP
1775 N Laguna Dr, Kamiah, ID 83536 · Lewis County · Publicly Owned Treatment Works
- Average flow
- 0.16 MGD
- Design flow
- 0.61 MGD
- NPDES permit
- ID0028002
- Effective
- Permit expires
- May 2028
- Population served
- 2,133
- CWNS 2022
Kamiah Regional STP is a publicly owned wastewater treatment works in Kamiah, Lewis County, Idaho treating an average of 0.16 million gallons per day against a permitted design capacity of 0.61 MGD, serving about 2,133 residents. It discharges under NPDES permit ID0028002 (effective), which expires in May 2028, with 11 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in August 2026.
Treatment technology
Treatment structures and unit processes at Kamiah Regional STP.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 11
- 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 Kamiah Regional STP in EPA's ICIS system.
- Formal actions
- 1
- 1 since FY2020
- Compliance actions
- $100
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · Aug 2026
CITY OF KAMIAH - ACO (CWA NPDES)
Administrative order · CWA, NPDES Permit Violations · Final Order No Penalty · Compliance actions $100
EPA's description of the case:
“On August 4, 2026, Region 10 issued an Administrative Order on Consent to the City of Kamiah for its wastewater treatment facility located in Kamiah, Idaho. The order will require the City to conduct…”
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Source: EPA ECHO, civil enforcement case 10-2026-0177.
Full case history with a free Klarifi account
Every action against Kamiah Regional STP with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
1 verified contact for Kamiah Regional STP, with validated emails and direct phone numbers.
Unlock 1 verified contact
Names, validated emails and direct phone numbers for decision-makers at Kamiah Regional STP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Idaho
Kooskia · 7 mi away
—
Nezperce · 10 mi away
0.008 MGD
Weippe · 11 mi away
0.27 MGD
Cottonwood · 20 mi away
0.22 MGD
Craigmont · 20 mi away
0.3 MGD
Pierce · 21 mi away
0.17 MGD
Grangeville · 21 mi away
0.42 MGD
Orofino · 23 mi away
0.02 MGD
Kamiah Regional STP: 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 28, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Centrate · Ozonation · all terms