Heyburn WWTP
Heyburn, ID · Minidoka County · Publicly Owned Treatment Works
- Average flow
- 0.71 MGD
- Design flow
- 0.66 MGD
- NPDES permit
- ID0020940
- Administratively continued
- Permit expires
- January 2007
- Population served
- 3,592
- CWNS 2022
Heyburn WWTP is a publicly owned wastewater treatment works in Heyburn, Minidoka County, Idaho treating an average of 0.71 million gallons per day against a permitted design capacity of 0.66 MGD, serving about 3,592 residents. Treatment on site includes clarifiers, carrousels / oxidation ditches. It discharges under NPDES permit ID0020940 (administratively continued), which expires in January 2007, with 17 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Compliance snapshot (last 3 years)
- Total violations
- 17
- Effluent violations
- 3
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Heyburn WWTP.
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Nearby wastewater treatment plants in Idaho
Hansen · 28 mi away
0.07 MGD
Richfield · 39 mi away
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Jerome · 41 mi away
3.59 MGD
Filer · 43 mi away
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Shoshone · 43 mi away
0.13 MGD
Rockland · 45 mi away
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American Falls · 48 mi away
0.53 MGD
Carey · 51 mi away
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Heyburn 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 September 11, 2026; facility record last updated February 27, 2025.