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Clean Water Act discharge permit · NPDES HIF014772

WAHIAWA WASTEWATER TREATMENT PLANT, Wahiawa, HI: NPDES HIF014772 discharge permit, effluent exceedances, inspections, penalties

WAHIAWA WASTEWATER TREATMENT PLANT, held by City and County of Honolulu, Department of Facility Maintenance, holds NPDES permit HIF014772. EPA’s file records it issued August 11, 2025 and expiring January 14, 2027. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

What the register holds for WAHIAWA WASTEWATER TREATMENT PLANT: its NPDES ID, its permit type and status, its dates, its address in Wahiawa, Hawaii. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES HIF014772.

Identity

Facility as filedWAHIAWA WASTEWATER TREATMENT PLANT
Permittee as filedCity and County of Honolulu, Department of Facility Maintenance
NPDES IDHIF014772
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedAugust 11, 2025
Expiration dateJanuary 14, 2027
Issuing agencyHawaii Dept of Health, Clean Water Branch
AddressWahiawa, HI 96786
Receiving water impaired303(D) Listed
SubwatershedKaukonahua Stream (HUC 200600000102)
NAICS221320 – Sewage Treatment Facilities
SIC4952 – Sewerage Systems

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES HIF014772.

Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES HIF014772.

Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.

Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.

Watch this permit

One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, HIF014772.

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How often?
  • One permit holder — $99/month
  • One watershed — $2,990/year
  • One state — $4,990/year
  • The whole register — $18,000/year

How we handle your data → Privacy

EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID HIF014772 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

What this page shows

Among the 299 general permit coverages in Honolulu County, 1.0% have a violation on file. WAHIAWA WASTEWATER TREATMENT PLANT sits among those 299 coverages, and the Kaukonahua Stream subwatershed holds 61 NPDES permits including this permit. Of the 299 coverages, 90.0% were issued before this permit.