Kamiah Regional STP
Kamiah, ID · Lewis County · Publicly Owned Treatment Works
- Average flow
- 0.12 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 0.12 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.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
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.
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
0.11 MGD
Nezperce · 10 mi away
—
Weippe · 11 mi away
—
Cottonwood · 20 mi away
—
Craigmont · 20 mi away
—
Pierce · 21 mi away
0.05 MGD
Grangeville · 21 mi away
0.39 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 September 11, 2026; facility record last updated November 28, 2025.