Petersburg WWTP
1404 14th St, Petersburg, AK 99833 · Petersburg County · Publicly Owned Treatment Works
- Average flow
- 0.43 MGD
- Design flow
- 1.2 MGD
- NPDES permit
- AK0021458
- Effective
- Permit expires
- October 2030
- Population served
- 3,198
- CWNS 2022
Petersburg WWTP is a publicly owned wastewater treatment works in Petersburg, Petersburg County, Alaska treating an average of 0.43 million gallons per day against a permitted design capacity of 1.2 MGD, serving about 3,198 residents. It discharges under NPDES permit AK0021458 (effective), which expires in October 2030, with 5 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in July 2026.
Treatment technology
Treatment structures and unit processes at Petersburg WWTP.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 5
- Effluent violations
- 5
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 Petersburg WWTP in EPA's ICIS system.
- Formal actions
- 1
- 1 since FY2020
- Compliance actions
- $300,000
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · Jul 2026
PETERSBURG BOROUGH WWTP - ACO (CWA NPDES)
Administrative order · CWA, NPDES Permit Violations · Final Order No Penalty · Compliance actions $300,000
EPA's description of the case:
“On 7/1/2026, Region 10 issued an administrative order on consent to Petersburg Borough for its wastewater treatment facility. In 2024, Petersburg discovered that the diffuser, at the end of the…”
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Source: EPA ECHO, civil enforcement case 10-2026-0184.
Full case history with a free Klarifi account
Every action against Petersburg WWTP with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
Decision-makers at Petersburg WWTP.
No verified contacts on file yet
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Nearby wastewater treatment plants in Alaska
Thorne Bay · 80 mi away
0.22 MGD
Ketchikan · 102 mi away
0.00000022 MGD
Ketchikan · 112 mi away
1.61 MGD
Juneau · 115 mi away
0.96 MGD
Ketchikan · 118 mi away
0.48 MGD
Juneau · 123 mi away
2.15 MGD
Juneau · 126 mi away
0.05 MGD
Metlakatla · 128 mi away
0.23 MGD
Petersburg 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 September 1, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Filter press · FOG · all terms