Clean Water Act discharge permit · NPDES HI0021848
LAHAINA WASTEWATER RECLAMATION FACILITY (WWRF) INJECTION WELLS 1-4, Wailuku, HI: NPDES HI0021848 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 141Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
LAHAINA WASTEWATER RECLAMATION FACILITY (WWRF) INJECTION WELLS 1-4, held by County of Maui, holds NPDES permit HI0021848. EPA’s file records it issued August 29, 2025 and expiring September 30, 2030. 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 | LAHAINA WASTEWATER RECLAMATION FACILITY (WWRF) INJECTION WELLS 1-4 |
|---|---|
| Permittee as filed | County of Maui |
| NPDES ID | HI0021848 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | August 29, 2025 |
| Expiration date | September 30, 2030 |
| Issuing agency | Hawaii Dept of Health, Clean Water Branch |
| Address | Wailuku, HI 96793 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Iao Stream (HUC 200200000103) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 141Pollutants on file
- 141Under a numeric limit
- 16With a violation of any kind
- 7With 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 141 are shown.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Nitrogen, total [as N] | 6 | 26 | 10 | July 31, 2026 | 3,057% over the limit |
| pH | 4 | 26 | 10 | July 31, 2026 | |
| Turbidity | 3 | 18 | 10 | July 31, 2026 | |
| Nitrogen, ammonia total [as NH4] | 3 | 18 | 10 | July 31, 2026 | 46,500% over the limit |
| Phosphorus, total [as P] | 6 | 26 | 6 | July 31, 2026 | 2,584% over the limit |
| Coliform, fecal general | 2 | 10 | 2 | March 31, 2026 | 1,110% over the limit |
| Flow, in conduit or thru treatment plant | 6 | 25 | 1 | March 31, 2026 | 10% over the limit |
| BOD, 5-day, 20 deg. C | 12 | 48 | 0 | ||
| Solids, total suspended | 12 | 48 | 0 | ||
| Enterococci | 2 | 10 | 0 | ||
| Temperature, water deg. centigrade | 1 | 5 | 0 | ||
| BOD, 5-day, percent removal | 1 | 4 | 0 | ||
| Solids, suspended percent removal | 1 | 4 | 0 | ||
| Pass/Fail Static 4 Day Chronic Raphidocelis subcapitata | 1 | 2 | 0 | ||
| Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia | 1 | 2 | 0 | ||
| Pass/Fail Static Renewal 7Day Chronic Pimephales promelas | 1 | 2 | 0 | ||
| Arsenic, total recoverable | 2 | 0 | 0 | ||
| Thallium, total recoverable | 2 | 0 | 0 | ||
| Carbon tetrachloride | 2 | 0 | 0 | ||
| 1,2-Dichloroethane | 2 | 0 | 0 | ||
| Toluene | 2 | 0 | 0 | ||
| Benzene | 2 | 0 | 0 | ||
| Acenaphthene | 2 | 0 | 0 | ||
| Ethylbenzene | 2 | 0 | 0 | ||
| Hexachlorobutadiene | 2 | 0 | 0 | ||
| Hexachloroethane | 2 | 0 | 0 | ||
| Isophorone | 2 | 0 | 0 | ||
| Nitrobenzene | 2 | 0 | 0 | ||
| Tetrachloroethylene | 2 | 0 | 0 | ||
| 1,1,2,2-Tetrachloroethane | 2 | 0 | 0 | ||
| Pentachlorophenol | 2 | 0 | 0 | ||
| Trichloroethylene | 2 | 0 | 0 | ||
| Aldrin | 2 | 0 | 0 | ||
| Chlordane [tech mix. and metabolites] | 2 | 0 | 0 | ||
| DDD in whole water sample | 2 | 0 | 0 | ||
| DDT | 2 | 0 | 0 | ||
| Dieldrin | 2 | 0 | 0 | ||
| Methoxychlor | 2 | 0 | 0 | ||
| 1,3-Dichloropropene | 2 | 0 | 0 | ||
| Cyanide, total [as CN] | 1 | 0 | 0 | ||
| Selenium, 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 | ||
| Cadmium, total recoverable | 1 | 0 | 0 | ||
| Lead, total recoverable | 1 | 0 | 0 | ||
| Copper, total recoverable | 1 | 0 | 0 | ||
| Antimony, total recoverable | 1 | 0 | 0 | ||
| 2,4,5-Trichlorophenoxypropionic acid | 1 | 0 | 0 | ||
| 2-Methyl-4,6-dinitrophenol | 1 | 0 | 0 | ||
| Tributyltin | 1 | 0 | 0 | ||
| Dichlorobromomethane | 1 | 0 | 0 | ||
| Bromoform | 1 | 0 | 0 | ||
| Chloroform | 1 | 0 | 0 | ||
| Acrolein | 1 | 0 | 0 | ||
| Acrylonitrile | 1 | 0 | 0 | ||
| Anthracene | 1 | 0 | 0 | ||
| Benzo[b]fluoranthene | 1 | 0 | 0 |
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 HI0021848.
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 HI0021848 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.