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Clean Water Act discharge permit · NPDES ND0000353

WILLISTON WTP, Williston, ND: NPDES ND0000353 discharge permit, effluent exceedances, inspections, penalties

WILLISTON WTP, held by Williston WTP, holds NPDES permit ND0000353, which discharges to Lake Sakakawea. EPA’s file records it issued March 11, 2011 and expiring March 31, 2016. 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 filedWILLISTON WTP
Permittee as filedWilliston WTP
NPDES IDND0000353
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMinor discharger
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedMarch 11, 2011
Expiration dateMarch 31, 2016
Issuing agencyNorth Dakota Department of Health
AddressWilliston, ND 58802
Receiving waterLake Sakakawea
SubwatershedSloulin International Airport (HUC 101101010303)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

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 measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Solids, total suspended030
Nitrogen, ammonia total [as N]030
Aluminum, dissolved [as Al]030
Chlorine, total residual030
pH020
Flow, in conduit or thru treatment plant020
Flow, total010

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES ND0000353.

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 ND0000353.

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, ND0000353.

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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 ND0000353 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

What this page shows

The WILLISTON WTP permit, a POTW program individual permit in Williston, Williams County, North Dakota, is one of 10 POTW permits in Williams County on EPA's NPDES register, and it sits within a subwatershed that holds 49 NPDES permits, this one included. Of all 10 POTW permits in the county, 10.0% carry an earlier issue date than this one, and the permit records no pollutants under a numeric limit and no effluent exceedances.