County Of Hawaii Papaikou-Paukaa WWTP
108 Railroad Avenue, Hilo, HI 96720 · Hawaii County · Publicly Owned Treatment Works
- Average flow
- 0.1 MGD
- Design flow
- 0.35 MGD
- NPDES permit
- HI0021113
- Effective
- Permit expires
- April 2031
- Population served
- 1,510
- CWNS 2022
County Of Hawaii Papaikou-Paukaa WWTP is a publicly owned wastewater treatment works in Hilo, Hawaii County, Hawaii treating an average of 0.1 million gallons per day against a permitted design capacity of 0.35 MGD, serving about 1,510 residents. It discharges under NPDES permit HI0021113 (effective), which expires in April 2031, with 40 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in September 2005.
Treatment technology
Treatment structures and unit processes at County Of Hawaii Papaikou-Paukaa WWTP.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 40
- Effluent violations
- 1
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 County Of Hawaii Papaikou-Paukaa WWTP in EPA's ICIS system.
- Formal actions
- 1
- 0 since FY2020
- Compliance actions
- $7M
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · Sep 2005
County of Hawaii - Cesspools
Administrative order · SDWA, UIC Regulations Classes I - V · Unilateral Administrative Order Without Adjudication · Compliance actions $7M
EPA's description of the case:
“This is a Consent Order pursuant to the Safe Drinking Water Act, Underground Injection Control regulations issued to the County of Hawaii. The violation involves the operation of Large Capacity…”
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Source: EPA ECHO, civil enforcement case 09-2005-0210.
Full case history with a free Klarifi account
Every action against County Of Hawaii Papaikou-Paukaa WWTP with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
Decision-makers at County Of Hawaii Papaikou-Paukaa WWTP.
No verified contacts on file yet
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Nearby wastewater treatment plants in Hawaii
Hilo · 7 mi away
3.85 MGD
Kapaa · 315 mi away
0.48 MGD
County Of Hawaii Papaikou-Paukaa 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 18, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · FOG · Equalization tank · all terms