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City and County of Honolulu

NPDES permit HI0021956 · Minor sewage treatment permit · effective, expires Sep 30, 2031 · EPA data of Oct 7, 2026

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EPA ECHOFacility reportDMR history

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Last 12 months (Oct 1, 2025 – Sep 30, 2026)

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Reporting

Reports due
About 28 days after each period ends

How strict are these limits?

Compared with the same limit in similar permits.

8 other limits have too few similar permits to compare.

Limits in force (201)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigrademonthly average report only all year
001Temperature, water deg. centigradedaily maximum report only all year
001BOD, 5-day, 20 deg. Cmonthly average <= 30 mg/L all year
001BOD, 5-day, 20 deg. Cmonthly average <= 119 mg/L all year
001BOD, 5-day, 20 deg. Cweekly average <= 45 mg/L all year
001BOD, 5-day, 20 deg. Cweekly average <= 122 mg/L all year
001BOD, 5-day, 20 deg. Cmonthly average <= 22518 lb/d all year
001BOD, 5-day, 20 deg. Cmonthly average <= 89414 lb/d all year
001BOD, 5-day, 20 deg. Cweekly average <= 33777 lb/d all year
001BOD, 5-day, 20 deg. Cweekly average <= 91594 lb/d all year
001BOD, 5-day, 20 deg. Cdaily maximum report only all year
001BOD, 5-day, 20 deg. Cdaily maximum report only all year
001pHminimum >= 6 SU all year
001pHmaximum <= 9 SU all year
001Solids, total suspendedmonthly average <= 30 mg/L all year
001Solids, total suspendedmonthly average <= 48 mg/L all year
001Solids, total suspendedweekly average <= 45 mg/L all year
001Solids, total suspendedweekly average <= 50 mg/L all year
001Solids, total suspendedmonthly average <= 22518 lb/d all year
001Solids, total suspendedmonthly average <= 36349 lb/d all year
001Solids, total suspendedweekly average <= 33777 lb/d all year
001Solids, total suspendedweekly average <= 37403 lb/d all year
001Solids, total suspendeddaily maximum report only all year
001Solids, total suspendeddaily maximum report only all year
001Oil & Greasedaily maximum report only all year
001Oil & Greasedaily maximum report only all year
001Cyanide, total [as CN]daily maximum report only all year
001Arsenic, total recoverabledaily maximum report only all year
001Selenium, total recoverabledaily maximum report only all year
001Thallium, total recoverabledaily maximum report only all year
001Beryllium, total recoverable [as Be]daily maximum report only all year
001Chromium, hexavalent [as Cr]daily maximum report only all year
001Nickel, total recoverabledaily maximum report only all year
001Silver total recoverabledaily maximum report only all year
001Zinc, total recoverabledaily maximum report only all year
001Aluminum, total recoverabledaily maximum report only all year
001Cadmium, total recoverabledaily maximum report only all year
001Lead, total recoverabledaily maximum report only all year
001Copper, total recoverabledaily maximum report only all year
001Antimony, total recoverabledaily maximum report only all year
0012-Methyl-4,6-dinitrophenoldaily maximum report only all year
001Dichlorobromomethanedaily maximum report only all year
001Carbon tetrachloridedaily maximum report only all year
0011,2-Dichloroethanedaily maximum report only all year
001Bromoformdaily maximum report only all year
001Chloroformdaily maximum report only all year
001Toluenedaily maximum report only all year
001Benzenedaily maximum report only all year
001Acenaphthenedaily maximum report only all year
001Acroleindaily maximum report only all year
001Acrylonitriledaily maximum report only all year
001Anthracenedaily maximum report only all year
001Benzo[b]fluoranthenedaily maximum report only all year
001Benzo[k]fluoranthenedaily maximum report only all year
001Benzo[a]pyrenedaily maximum report only all year
001Bis[2-chloroethyl] etherdaily maximum report only all year
001Bis[2-chloro-1-methylethyl] etherdaily maximum report only all year
001Butyl benzyl phthalatedaily maximum report only all year
001Chlorobenzenedaily maximum report only all year
001Chlorodibromomethanedaily maximum report only all year
001Chrysenedaily maximum report only all year
001Diethyl phthalatedaily maximum report only all year
001Dimethyl phthalatedaily maximum report only all year
0011,2-Diphenylhydrazinedaily maximum report only all year
001Endosulfan sulfatedaily maximum report only all year
001.beta.-Endosulfandaily maximum report only all year
001.alpha.-Endosulfandaily maximum report only all year
001Endrin aldehydedaily maximum report only all year
001Ethylbenzenedaily maximum report only all year
001Fluoranthenedaily maximum report only all year
001Fluorenedaily maximum report only all year
001Hexachlorocyclopentadienedaily maximum report only all year
001Hexachlorobutadienedaily maximum report only all year
001Hexachloroethanedaily maximum report only all year
001Indeno[1,2,3-cd]pyrenedaily maximum report only all year
001Isophoronedaily maximum report only all year
001Methyl bromide [Bromomethane]daily maximum report only all year
001Methylene chloridedaily maximum report only all year
001N-Nitrosodi-N-propylaminedaily maximum report only all year
001N-Nitrosodiphenylaminedaily maximum report only all year
001N-Nitrosodimethylamine [NDMA]daily maximum report only all year
001Nitrobenzenedaily maximum report only all year
001Pyrenedaily maximum report only all year
001Tetrachloroethylenedaily maximum report only all year
0011,1-Dichloroethylenedaily maximum report only all year
0011,1,1-Trichloroethanedaily maximum report only all year
0011,1,2-Trichloroethanedaily maximum report only all year
0011,1,2,2-Tetrachloroethanedaily maximum report only all year
001Benzo[a]anthracenedaily maximum report only all year
0011,2-Dichlorobenzenedaily maximum report only all year
0011,2-Dichloropropanedaily maximum report only all year
001trans-1,2-Dichloroethylenedaily maximum report only all year
0011,2,4-Trichlorobenzenedaily maximum report only all year
001Dibenz[a,h]anthracenedaily maximum report only all year
0011,3-Dichlorobenzenedaily maximum report only all year
0011,4-Dichlorobenzenedaily maximum report only all year
0012-Chloronaphthalenedaily maximum report only all year
0012-Chlorophenoldaily maximum report only all year
0012,4-Dichlorophenoldaily maximum report only all year
0012,4-Dimethylphenoldaily maximum report only all year
0012,4-Dinitrotoluenedaily maximum report only all year
0012,4-Dinitrophenoldaily maximum report only all year
0012,4,6-Trichlorophenoldaily maximum report only all year
0013,3'-Dichlorobenzidinedaily maximum report only all year
0012,3,7,8-Tetrachlorodibenzo-p-dioxindaily maximum report only all year
001Phenoldaily maximum report only all year
001Naphthalenedaily maximum report only all year
001Chlorpyrifosdaily maximum report only all year
001Pentachlorophenoldaily maximum report only all year
0012,4,5-TP[silvex] acids/salts, whole water sampledaily maximum report only all year
001Di[2-ethylhexyl] phthalate [DEHP]daily maximum report only all year
001Di-n-butyl phthalatedaily maximum report only all year
001Benzidinedaily maximum report only all year
001Vinyl chloridedaily maximum report only all year
001Trichloroethylenedaily maximum report only all year
0014,4'-DDTdaily maximum report only all year
0014,4'-DDDdaily maximum report only all year
0014,4'-DDEdaily maximum report only all year
001Aldrindaily maximum report only all year
001.alpha.-BHCdaily maximum report only all year
001.beta.-BHCdaily maximum report only all year
001.gamma.-BHCdaily maximum report only all year
001Chlordane [tech mix. and metabolites]daily maximum report only all year
001Dieldrinannual average <= .00066 ug/L all year
001Dieldrindaily maximum <= .42 ug/L all year
001Dieldrindaily maximum report only all year
001Dieldrinannual average <= .0005 lb/d all year
001Dieldrindaily maximum <= .315 lb/d all year
001Endrindaily maximum report only all year
001Toxaphenedaily maximum report only all year
001Heptachlordaily maximum report only all year
001Heptachlor epoxideannual average <= .018 ug/L all year
001Heptachlor epoxidedaily maximum report only all year
001Heptachlor epoxideannual average <= .014 lb/d all year
001Methoxychlordaily maximum report only all year
001Malathiondaily maximum report only all year
001Parathiondaily maximum report only all year
001Demetondaily maximum report only all year
001Guthiondaily maximum report only all year
001Hexachlorobenzenedaily maximum report only all year
0012,4-Dichlorophenoxyacetic aciddaily maximum report only all year
001Mirexdaily maximum report only all year
001Flow, in conduit or thru treatment plantmonthly average report only all year
001Flow, in conduit or thru treatment plantdaily maximum report only all year
001Flow, in conduit or thru treatment plantweekly average report only all year
001Chlorine, total residualdaily maximum report only all year
0012,3,5,6-Tetrachlorophenoldaily maximum report only all year
0012,4,5-Trichlorophenoldaily maximum report only all year
001Fats, oils & grease [total o & g less TPH]monthly average report only all year
001Fats, oils & grease [total o & g less TPH]daily maximum report only all year
001Fats, oils & grease [total o & g less TPH]monthly average report only all year
001Fats, oils & grease [total o & g less TPH]daily maximum report only all year
001Enterococcimonthly geometric mean <= 19250 CFU/100mL all year
001EnterococciMW <= 28730 CFU/100mL all year
0014-Chloro-3-methylphenoldaily maximum report only all year
001Mercury, total recoverabledaily maximum report only all year
0011,3-Dichloropropenedaily maximum report only all year
0011,2,4,5-Tetrachlorobenzenedaily maximum report only all year
001Pentachlorobenzenedaily maximum report only all year
001N-Nitrosodiethylaminedaily maximum report only all year
001N-Nitrosopyrrolidinedaily maximum report only all year
001N-Nitrosodibutylaminedaily maximum report only all year
001BOD, 5-day, percent removalmonthly average minimum >= 85 % all year
001BOD, 5-day, percent removalmonthly average minimum >= 30 % all year
001Solids, suspended percent removalmonthly average minimum >= 85 % all year
001Solids, suspended percent removalmonthly average minimum >= 60 % all year
001Pentachloroethanedaily maximum report only all year
001Hydrocarbons, total petroleummonthly average report only all year
001Hydrocarbons, total petroleumdaily maximum report only all year
001Hydrocarbons, total petroleummonthly average report only all year
001Hydrocarbons, total petroleumdaily maximum report only all year
001Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubiadaily maximum <= 0 pass=0;fail=1 all year
001Pass/Fail Static Renewal 7 Day Chronic Atherinops affinisdaily maximum <= 0 pass=0;fail=1 all year
001Pass/Fail Static 20 Minute Fertilization Chronic Tripneustes gratilladaily maximum <= 0 pass=0;fail=1 all year
INFBOD, 5-day, 20 deg. Cmonthly average report only all year
INFBOD, 5-day, 20 deg. Cweekly average report only all year
INFBOD, 5-day, 20 deg. Cdaily maximum report only all year
INFBOD, 5-day, 20 deg. Cmonthly average report only all year
INFBOD, 5-day, 20 deg. Cweekly average report only all year
INFBOD, 5-day, 20 deg. Cdaily maximum report only all year
INFSolids, total suspendedmonthly average report only all year
INFSolids, total suspendedweekly average report only all year
INFSolids, total suspendeddaily maximum report only all year
INFSolids, total suspendedmonthly average report only all year
INFSolids, total suspendedweekly average report only all year
INFSolids, total suspendeddaily maximum report only all year
INFOil & Greasedaily maximum report only all year
INFOil & Greasedaily maximum report only all year
INFDieldrindaily maximum report only all year
INFDieldrindaily maximum report only all year
INFFlow, in conduit or thru treatment plantmonthly average report only all year
INFFlow, in conduit or thru treatment plantdaily maximum report only all year
INFFlow, in conduit or thru treatment plantweekly average report only all year
INFFats, oils & grease [total o & g less TPH]monthly average report only all year
INFFats, oils & grease [total o & g less TPH]daily maximum report only all year
INFFats, oils & grease [total o & g less TPH]monthly average report only all year
INFFats, oils & grease [total o & g less TPH]daily maximum report only all year
INFHydrocarbons, total petroleummonthly average report only all year
INFHydrocarbons, total petroleumdaily maximum report only all year
INFHydrocarbons, total petroleummonthly average report only all year
INFHydrocarbons, total petroleumdaily maximum report only all year

From EPA's ECHO data, not the permit document itself: your permit is the final word. All states