Clean Water Act discharge permit · NPDES HI0021953
C&CH WAIANAE WWTP, Waianae, HI: NPDES HI0021953 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MajorDischarger class
- 96Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
C&CH WAIANAE WWTP, held by City and County of Honolulu, Department of Environmental Services, holds NPDES permit HI0021953. EPA’s file records it issued December 31, 2025 and expiring January 31, 2031. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | C&CH WAIANAE WWTP |
|---|---|
| Permittee as filed | City and County of Honolulu, Department of Environmental Services |
| NPDES ID | HI0021953 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Federal facility |
| Program | Publicly owned treatment works |
| Issued | December 31, 2025 |
| Expiration date | January 31, 2031 |
| Issuing agency | Hawaii Dept of Health, Clean Water Branch |
| Address | Waianae, HI 96792 |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 96Pollutants on file
- 96Under a numeric limit
- 1With a violation of any kind
- 0With an effluent exceedance
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; the 60 with the most exceedances of 96 are shown.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Turbidity | 1 | 1 | 0 | ||
| BOD, 5-day, 20 deg. C | 12 | 0 | 0 | ||
| Solids, total suspended | 12 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 6 | 0 | 0 | ||
| pH | 2 | 0 | 0 | ||
| Enterococci | 2 | 0 | 0 | ||
| Temperature, water deg. centigrade | 1 | 0 | 0 | ||
| Cyanide, total [as CN] | 1 | 0 | 0 | ||
| Arsenic, total recoverable | 1 | 0 | 0 | ||
| Selenium, total recoverable | 1 | 0 | 0 | ||
| Thallium, total recoverable | 1 | 0 | 0 | ||
| Beryllium, total recoverable [as Be] | 1 | 0 | 0 | ||
| Chromium, hexavalent [as Cr] | 1 | 0 | 0 | ||
| Nickel, total recoverable | 1 | 0 | 0 | ||
| Silver total recoverable | 1 | 0 | 0 | ||
| Zinc, total recoverable | 1 | 0 | 0 | ||
| Aluminum, total recoverable | 1 | 0 | 0 | ||
| Cadmium, total recoverable | 1 | 0 | 0 | ||
| Lead, total recoverable | 1 | 0 | 0 | ||
| Copper, total recoverable | 1 | 0 | 0 | ||
| Antimony, total recoverable | 1 | 0 | 0 | ||
| 2-Methyl-4,6-dinitrophenol | 1 | 0 | 0 | ||
| Tributyltin | 1 | 0 | 0 | ||
| Carbon tetrachloride | 1 | 0 | 0 | ||
| Chloroform | 1 | 0 | 0 | ||
| Toluene | 1 | 0 | 0 | ||
| Benzene | 1 | 0 | 0 | ||
| Acenaphthene | 1 | 0 | 0 | ||
| Acrolein | 1 | 0 | 0 | ||
| Acrylonitrile | 1 | 0 | 0 | ||
| Bis[2-chloroethyl] ether | 1 | 0 | 0 | ||
| Bis[2-chloro-1-methylethyl] ether | 1 | 0 | 0 | ||
| Diethyl phthalate | 1 | 0 | 0 | ||
| Dimethyl phthalate | 1 | 0 | 0 | ||
| 1,2-Diphenylhydrazine | 1 | 0 | 0 | ||
| Ethylbenzene | 1 | 0 | 0 | ||
| Fluoranthene | 1 | 0 | 0 | ||
| Hexachlorocyclopentadiene | 1 | 0 | 0 | ||
| Hexachlorobutadiene | 1 | 0 | 0 | ||
| Hexachloroethane | 1 | 0 | 0 | ||
| Isophorone | 1 | 0 | 0 | ||
| N-Nitrosodiphenylamine | 1 | 0 | 0 | ||
| N-Nitrosodimethylamine [NDMA] | 1 | 0 | 0 | ||
| Nitrobenzene | 1 | 0 | 0 | ||
| 1,1,1-Trichloroethane | 1 | 0 | 0 | ||
| 1,1,2-Trichloroethane | 1 | 0 | 0 | ||
| 1,1,2,2-Tetrachloroethane | 1 | 0 | 0 | ||
| 2-Chlorophenol | 1 | 0 | 0 | ||
| 2,4-Dichlorophenol | 1 | 0 | 0 | ||
| 2,4-Dimethylphenol | 1 | 0 | 0 | ||
| 2,4,6-Trichlorophenol | 1 | 0 | 0 | ||
| 3,3'-Dichlorobenzidine | 1 | 0 | 0 | ||
| 2,3,7,8-Tetrachlorodibenzo-p-dioxin | 1 | 0 | 0 | ||
| Phenol | 1 | 0 | 0 | ||
| Naphthalene | 1 | 0 | 0 | ||
| Chlorpyrifos | 1 | 0 | 0 | ||
| Pentachlorophenol | 1 | 0 | 0 | ||
| Di[2-ethylhexyl] phthalate [DEHP] | 1 | 0 | 0 | ||
| Di-n-butyl phthalate | 1 | 0 | 0 | ||
| Benzidine | 1 | 0 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES HI0021953.
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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES HI0021953.
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.
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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 HI0021953 there.
Nearby on the register
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- Every permit record in Hawaii, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.