Clean Water Act discharge permit · NPDES HI0020770
KULAIMANO WASTEWATER TREATMENT PLANT, Pepeekeo, HI: NPDES HI0020770 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 13Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
KULAIMANO WASTEWATER TREATMENT PLANT, held by County of Hawaii, holds NPDES permit HI0020770. EPA’s file records it issued February 23, 2017 and expiring March 31, 2022. 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 filed | KULAIMANO WASTEWATER TREATMENT PLANT |
|---|---|
| Permittee as filed | County of Hawaii |
| NPDES ID | HI0020770 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | February 23, 2017 |
| Expiration date | March 31, 2022 |
| Issuing agency | Hawaii Dept of Health, Clean Water Branch |
| Address | Pepeekeo, HI 96783 |
| Subwatershed | Hakalau Stream (HUC 200100000304) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 13Pollutants on file
- 13Under a numeric limit
- 9With a violation of any kind
- 2With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 4 | 1 | 1 | March 31, 2022 | 343% over the limit |
| Enterococci | 2 | 1 | 1 | September 30, 2019 | 121% over the limit |
| BOD, 5-day, 20 deg. C | 12 | 12 | 0 | ||
| Solids, total suspended | 12 | 12 | 0 | ||
| Flow, in conduit or thru treatment plant | 6 | 6 | 0 | ||
| pH | 2 | 2 | 0 | ||
| Chlorine, total residual | 2 | 2 | 0 | ||
| BOD, 5-day, percent removal | 1 | 1 | 0 | ||
| Solids, suspended percent removal | 1 | 1 | 0 | ||
| Nitrogen, total [as N] | 4 | 0 | 0 | ||
| Nitrite + Nitrate total [as N] | 4 | 0 | 0 | ||
| Phosphorus, total [as P] | 4 | 0 | 0 | ||
| Turbidity | 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 HI0020770.
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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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 HI0020770 there.
Nearby on the register
- Discharge permits in Pepeekeo
- Every permit record in Pepeekeo, A to Z
- Discharge permits in Hawaii
- Every permit record in Hawaii, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.