Clean Water Act discharge permit · NPDES HI0021504
MAUI OCEAN CENTER, Wailuku, HI: NPDES HI0021504 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
MAUI OCEAN CENTER, held by Maui Ocean Center, Inc., holds NPDES permit HI0021504, which discharges to Maalaea Harbor. EPA’s file records it issued October 4, 2013 and expiring October 3, 2018. 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 | MAUI OCEAN CENTER |
|---|---|
| Permittee as filed | Maui Ocean Center, Inc. |
| NPDES ID | HI0021504 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | October 4, 2013 |
| Expiration date | October 3, 2018 |
| Issuing agency | Hawaii Dept of Health, Clean Water Branch |
| Address | Wailuku, HI 96793 |
| Receiving water | MAALAEA HARBOR |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Waikapu Stream (HUC 200200000604) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 9Pollutants on file
- 9Under a numeric limit
- 7With a violation of any kind
- 6With 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.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Flow, in conduit or thru treatment plant | 4 | 34 | 34 | July 31, 2015 | 47% over the limit |
| Nitrogen, total [as N] | 10 | 18 | 18 | March 31, 2015 | 94% over the limit |
| Nitrite + Nitrate total [as N] | 10 | 15 | 15 | September 30, 2019 | 21% over the limit |
| Solids, total suspended | 8 | 3 | 3 | April 30, 2025 | 53% over the limit |
| Phosphorus, total [as P] | 10 | 2 | 2 | May 31, 2014 | 155% over the limit |
| Nitrogen, ammonia total [as NH4] | 10 | 2 | 1 | June 30, 2020 | 10% over the limit |
| BOD, 5-day, 20 deg. C | 8 | 1 | 0 | ||
| Turbidity | 4 | 0 | 0 | ||
| pH | 4 | 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 HI0021504.
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
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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 HI0021504 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.