Clean Water Act discharge permit · NPDES OK0000124
ONEOK FIELD SERVICES-MAYSVILLE, Maysville, OK: NPDES OK0000124 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 6Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
ONEOK FIELD SERVICES-MAYSVILLE, held by ONEOK Field Services-Maysville, holds NPDES permit OK0000124, which discharges to 310810020010 Washita Ck-001/Beef Ck-002 &003. EPA’s file records it issued January 10, 2020 and expiring January 31, 2025. 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.
Identity
| Facility as filed | ONEOK FIELD SERVICES-MAYSVILLE |
|---|---|
| Permittee as filed | ONEOK Field Services-Maysville |
| NPDES ID | OK0000124 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | January 10, 2020 |
| Expiration date | January 31, 2025 |
| Issuing agency | ODEQ |
| Address | Maysville, OK 73052 |
| Receiving water | 310810020010 Washita Ck-001/Beef Ck-002 &003 |
| Subwatershed | Gaddy Creek-Washita River (HUC 111303030303) |
| SIC | 1321 – Natural Gas Liquids |
| Other EPA IDs (FRS) | RCRA handler OKD049985781; ICIS-AIR source OK0000004004900004 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 9Pollutants on file
- 6Under a numeric limit
- 9With a violation of any kind
- 4With 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 | 10 | 35 | 3 | October 31, 2023 | 159% over the limit |
| pH | 6 | 34 | 2 | May 31, 2010 | |
| Oxidants, total residual | 1 | 7 | 2 | May 31, 2023 | 708% over the limit |
| Oil and grease, hexane extr method | 2 | 7 | 1 | October 31, 2007 | 67% over the limit |
| Flow, in conduit or thru treatment plant | 6 | 32 | 0 | ||
| Lead, total [as Pb] | 0 | 12 | 0 | ||
| Solids, total dissolved- 180 deg. C | 2 | 10 | 0 | ||
| Oil & Grease | 0 | 10 | 0 | ||
| Sulfate, total [as SO4] | 0 | 8 | 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 OK0000124.
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, OK0000124.
Start the watch
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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 OK0000124 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.