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Clean Water Act discharge permit · NPDES NDG589305

PORCUPINE COMMUNITY LAGOON SYSTEM, Fort Yates, ND: NPDES NDG589305 discharge permit, effluent exceedances, inspections, penalties

PORCUPINE COMMUNITY LAGOON SYSTEM, held by Standing Rock Sioux Tribe, holds NPDES permit NDG589305, which discharges to Unnamed Tributary To Cannonball River. EPA’s file records it issued February 8, 2016 and expiring December 31, 2020. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

What the register holds for PORCUPINE COMMUNITY LAGOON SYSTEM: its NPDES ID, its permit type and status, its dates, its address in Fort Yates, North Dakota, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES NDG589305.

Identity

Facility as filedPORCUPINE COMMUNITY LAGOON SYSTEM
Permittee as filedStanding Rock Sioux Tribe
NPDES IDNDG589305
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedFebruary 8, 2016
Expiration dateDecember 31, 2020
AddressFort Yates, ND 58538
Receiving waterUNNAMED TRIBUTARY TO CANNONBALL RIVER
Subwatershed101302060105 (HUC 101302060105)
NAICS221320 – Sewage Treatment Facilities
SIC4952 – Sewerage Systems

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES NDG589305.

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

EPA’s single-event violation file, as loaded, holds no violation for NPDES NDG589305.

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, NDG589305.

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How often?
  • 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 NDG589305 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

What this page shows

The PORCUPINE COMMUNITY LAGOON SYSTEM is one of 11 POTW permits in its county on EPA's NPDES register, and it is the only NPDES permit in its subwatershed, 101302060105. The record shows zero pollutants under a numeric limit and zero pollutants with an effluent exceedance, and 18.2% of the county's 11 POTW permits were issued earlier than this one, while 36.4% of them carry a violation on file.