Clean Water Act discharge permit · NPDES CA0023027
SHELTER COVE WWTF, Shelter Cove, CA: NPDES CA0023027 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 93Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
SHELTER COVE WWTF, held by Humboldt County Resort Improvement District No. 1, holds NPDES permit CA0023027, which discharges to Pacific Ocean. EPA’s file records it issued December 10, 2009 and expiring January 29, 2015. 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 | SHELTER COVE WWTF |
|---|---|
| Permittee as filed | Humboldt County Resort Improvement District No. 1 |
| NPDES ID | CA0023027 |
| 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 | December 10, 2009 |
| Expiration date | January 29, 2015 |
| Address | Shelter Cove, CA 95589 |
| Receiving water | PACIFIC OCEAN |
| Subwatershed | Big Flat Creek-Frontal Pacific Ocean (HUC 180101070402) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 105Pollutants on file
- 93Under a numeric limit
- 101With a violation of any kind
- 5With 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 105 are shown.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Chlorine, total residual | 2 | 39 | 5 | June 30, 2022 | 2,147,483,650% over the limit |
| pH | 2 | 34 | 4 | June 30, 2024 | |
| BOD, 5-day, percent removal | 1 | 17 | 2 | March 31, 2026 | 99,999% over the limit |
| TCDD equivalents | 1 | 4 | 2 | June 30, 2019 | 2,147,483,650% over the limit |
| Coliform, total general | 2 | 31 | 1 | June 30, 2023 | 46% over the limit |
| Solids, total suspended | 6 | 106 | 0 | ||
| BOD, 5-day, 20 deg. C | 6 | 101 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 62 | 0 | ||
| Copper, total recoverable | 1 | 56 | 0 | ||
| Turbidity | 3 | 45 | 0 | ||
| Solids, settleable | 2 | 30 | 0 | ||
| Chloroform | 1 | 18 | 0 | ||
| Solids, suspended percent removal | 1 | 15 | 0 | ||
| Pass/Fail Static 48Hr Chronic Macrocystis pyrifera | 0 | 6 | 0 | ||
| Pass/Fail Static 48Hr Chronic Haliotis rufescens | 0 | 6 | 0 | ||
| Pass/Fail Static Renewal 7 Day Chronic Atherinops affinis | 0 | 6 | 0 | ||
| Pass/Fail Static 20 Minute Fertilization Chronic Strongylocentrotus purpuratus | 0 | 6 | 0 | ||
| Pass/Fail Static 20 Minute Fertilization Chronic Dendraster excentricus | 0 | 6 | 0 | ||
| Radioactivity | 1 | 3 | 0 | ||
| Cyanide, total [as CN] | 1 | 3 | 0 | ||
| Arsenic, total recoverable | 1 | 3 | 0 | ||
| Selenium, total recoverable | 1 | 3 | 0 | ||
| Thallium, total recoverable | 1 | 3 | 0 | ||
| Beryllium, total recoverable [as Be] | 1 | 3 | 0 | ||
| Chromium, hexavalent [as Cr] | 1 | 3 | 0 | ||
| Chromium, trivalent [as Cr] | 1 | 3 | 0 | ||
| Nickel, total recoverable | 1 | 3 | 0 | ||
| Silver total recoverable | 1 | 3 | 0 | ||
| Zinc, total recoverable | 1 | 3 | 0 | ||
| Cadmium, total recoverable | 1 | 3 | 0 | ||
| Lead, total recoverable | 1 | 3 | 0 | ||
| Antimony, total recoverable | 1 | 3 | 0 | ||
| 2-Methyl-4,6-dinitrophenol | 1 | 3 | 0 | ||
| Tributyltin | 1 | 3 | 0 | ||
| Polynuclear Aromatic Hydrocarbons [PAHs] | 1 | 3 | 0 | ||
| Dichlorobromomethane | 1 | 3 | 0 | ||
| Carbon tetrachloride | 1 | 3 | 0 | ||
| 1,2-Dichloroethane | 1 | 3 | 0 | ||
| Dibromochloromethane | 1 | 3 | 0 | ||
| Toluene | 1 | 3 | 0 | ||
| Benzene | 1 | 3 | 0 | ||
| Acrolein | 1 | 3 | 0 | ||
| Acrylonitrile | 1 | 3 | 0 | ||
| Bis[2-chloroethyl] ether | 1 | 3 | 0 | ||
| Bis[2-chloroethoxy]methane | 1 | 3 | 0 | ||
| Bis[2-chloroisopropyl] ether | 1 | 3 | 0 | ||
| Chlorobenzene | 1 | 3 | 0 | ||
| Diethyl phthalate | 1 | 3 | 0 | ||
| Dimethyl phthalate | 1 | 3 | 0 | ||
| 1,2-Diphenylhydrazine | 1 | 3 | 0 | ||
| Ethylbenzene | 1 | 3 | 0 | ||
| Fluoranthene | 1 | 3 | 0 | ||
| Hexachlorocyclopentadiene | 1 | 3 | 0 | ||
| Hexachlorobutadiene | 1 | 3 | 0 | ||
| Hexachloroethane | 1 | 3 | 0 | ||
| Isophorone | 1 | 3 | 0 | ||
| Methylene chloride | 1 | 3 | 0 | ||
| N-Nitrosodi-N-propylamine | 1 | 3 | 0 | ||
| N-Nitrosodiphenylamine | 1 | 3 | 0 | ||
| N-Nitrosodimethylamine [NDMA] | 1 | 3 | 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 CA0023027.
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
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, CA0023027.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
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 CA0023027 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.