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Clean Water Act discharge permit · NPDES HIS000001

DOT-HIGHWAYS MUNICIPAL SEPARATE STORM SEWER SYSTEM (MS4), Honolulu, HI: NPDES HIS000001 discharge permit, effluent exceedances, inspections, penalties

DOT-HIGHWAYS MUNICIPAL SEPARATE STORM SEWER SYSTEM (MS4), held by State of Hawaii, Department of Transportation, holds NPDES permit HIS000001. EPA’s file records it issued September 27, 2013 and expiring September 26, 2018. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedDOT-HIGHWAYS MUNICIPAL SEPARATE STORM SEWER SYSTEM (MS4)
Permittee as filedState of Hawaii, Department of Transportation
NPDES IDHIS000001
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMajor discharger
Facility typeNot a publicly owned treatment works
ProgramLarge municipal storm sewer systems
IssuedSeptember 27, 2013
Expiration dateSeptember 26, 2018
Issuing agencyHawaii Dept of Health, Clean Water Branch
AddressHonolulu, HI 96813
SubwatershedWaimanalo Gulch (HUC 200600000501)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.

Pollutant or measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Turbidity1611June 30, 2018
Nitrogen, total [as N]1611June 30, 2018211% over the limit
Nitrite + Nitrate total [as N]1611June 30, 2018935% over the limit
Phosphorus, total [as P]1611June 30, 2018138% over the limit
Nitrogen, ammonia total [as N]1311June 30, 20181,795% over the limit
pH2600
Solids, total suspended1600
Temperature, water deg. centigrade1300
Oxygen, dissolved [DO]1300
Oxygen, dissolved percent saturation1300
BOD, 5-day, 20 deg. C1300
Salinity1300
Nitrogen, Kjeldahl, total [as N]1300
Cadmium, total recoverable1300
Lead, total recoverable1300
Oil and grease1300
Toluene1300
Benzene1300
Ethylbenzene1300
Flow, total1300
Chromium, hexavalent tot recoverable1300
Chemical Oxygen Demand [COD]1300

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 HIS000001.

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, HIS000001.

Start the watch

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 HIS000001 there.

Nearby on the register

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