Clean Water Act discharge permit · NPDES NDG589205
TOKIO WASTEWATER TREATMENT LAGOONS, Tokio, ND: NPDES NDG589205 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 12Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
TOKIO WASTEWATER TREATMENT LAGOONS, held by Sioux Utilities Commission, holds NPDES permit NDG589205, which discharges to Devils Lake. EPA’s file records it issued February 3, 2016 and expiring December 31, 2020. 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 | TOKIO WASTEWATER TREATMENT LAGOONS |
|---|---|
| Permittee as filed | Sioux Utilities Commission |
| NPDES ID | NDG589205 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | February 3, 2016 |
| Expiration date | December 31, 2020 |
| Address | Tokio, ND 58379 |
| Receiving water | DEVILS LAKE |
| Subwatershed | Black Tiger Bay-Devils Lake (HUC 090202011206) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 16Pollutants on file
- 12Under a numeric limit
- 15With a violation of any kind
- 1With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 6 | 46 | 1 | June 30, 2022 | 10% over the limit |
| BOD, 5-day, 20 deg. C | 6 | 45 | 0 | ||
| pH | 10 | 36 | 0 | ||
| Temperature, water deg. centigrade | 6 | 23 | 0 | ||
| Nitrogen, ammonia total [as N] | 6 | 23 | 0 | ||
| Flow, total | 6 | 18 | 0 | ||
| E. coli | 4 | 18 | 0 | ||
| Nitrogen, total [as N] | 3 | 15 | 0 | ||
| Phosphorus, total [as P] | 3 | 15 | 0 | ||
| Nitrite + Nitrate total [as N] | 0 | 10 | 0 | ||
| Nitrogen, Kjeldahl Total | 0 | 10 | 0 | ||
| Oil & Grease | 3 | 9 | 0 | ||
| Oil and grease visual | 3 | 9 | 0 | ||
| BOD, 5-day, percent removal | 0 | 5 | 0 | ||
| Solids, suspended percent removal | 0 | 5 | 0 | ||
| Duration of discharge | 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 NDG589205.
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, NDG589205.
Start the watch
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- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
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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 NDG589205 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.