{"state":"OK","as_of":"2026-10-15","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-15","page":"/dmr/p/OK","listed":"individual NPDES permits with limits in EPA's file; a general permit's coverages are not listed"},"filter":{"industry":null,"sic":"4911","matched_on":"EPA's primary SIC code and its description","over_limit":null,"parameter":null,"renewal":null},"of":427,"without_industry":1,"matched":25,"offset":0,"returned":25,"screen":{"of":25,"window":["2025-10-01","2026-09-30"],"with_record":25,"without_record":0,"over_limit":4,"missing_values":3,"parameters_over":[{"parameter":"Solids, total suspended","permits":2},{"parameter":"Copper, total [as Cu]","permits":1},{"parameter":"Iron, total [as Fe]","permits":1},{"parameter":"Oil and grease, hexane extr method","permits":1},{"parameter":"pH","permits":1}],"renewal":{"permit_expired":2,"application_overdue":6,"application_due_within_18_months":7},"says":"Of the 25 permits in EPA's SIC 4911 in OK, 4 went over a limit between 2025-10-01 and 2026-09-30 (Solids, total suspended: 2; Copper, total [as Cu]: 1; Iron, total [as Fe]: 1). 2 are past the expiry date EPA's file holds; 13 have a renewal application overdue or due within 18 months. EPA's file of 2026-10-15.","narrow":{"over_limit":"https://passage-data.com/api/v1/permits?state=OK&sic=4911&over_limit=true","parameter":{"Solids, total suspended":"https://passage-data.com/api/v1/permits?state=OK&sic=4911&parameter=Solids%2C+total+suspended","Copper, total [as Cu]":"https://passage-data.com/api/v1/permits?state=OK&sic=4911&parameter=Copper%2C+total+%5Bas+Cu%5D","Iron, total [as Fe]":"https://passage-data.com/api/v1/permits?state=OK&sic=4911&parameter=Iron%2C+total+%5Bas+Fe%5D","Oil and grease, hexane extr method":"https://passage-data.com/api/v1/permits?state=OK&sic=4911&parameter=Oil+and+grease%2C+hexane+extr+method","pH":"https://passage-data.com/api/v1/permits?state=OK&sic=4911&parameter=pH"},"renewal_expired":"https://passage-data.com/api/v1/permits?state=OK&sic=4911&renewal=expired","renewal_due":"https://passage-data.com/api/v1/permits?state=OK&sic=4911&renewal=due"}},"permits":[{"permit":"OK0043907","name":"AECI - Chouteau Power Plant","major":true,"sic":"4911","industry":"Electric Services","record":{"over":0,"over_by":[],"missing":0},"expires":"2029-01-31","renewal":null,"page":"https://passage-data.com/dmr/p/OK0043907","json":"https://passage-data.com/api/v1/permits/OK0043907"},{"permit":"OK1000128","name":"Associated Electric Coop.-Ripley Energy Center","major":false,"sic":"4911","industry":"Electric Services","record":{"over":0,"over_by":[],"missing":0},"expires":"2030-09-30","renewal":null,"page":"https://passage-data.com/dmr/p/OK1000128","json":"https://passage-data.com/api/v1/permits/OK1000128"},{"permit":"OK0035149","name":"GRDA-Chouteau","major":true,"sic":"4911","industry":"Electric Services","record":{"over":11,"over_by":[["pH",4],["Iron, total [as Fe]",4],["Copper, total [as Cu]",2]],"missing":0},"expires":"2030-09-30","renewal":null,"page":"https://passage-data.com/dmr/p/OK0035149","json":"https://passage-data.com/api/v1/permits/OK0035149"},{"permit":"OK0041327","name":"Grand River Dam Auth -Salina","major":false,"sic":"4911","industry":"Electric Services","record":{"over":0,"over_by":[],"missing":0},"expires":"2027-09-30","renewal":{"status":"application_due_within_18_months","application_due":"2027-04-03"},"page":"https://passage-data.com/dmr/p/OK0041327","json":"https://passage-data.com/api/v1/permits/OK0041327"},{"permit":"OK0041319","name":"Grand River Dam Auth-Kerr Dam","major":false,"sic":"4911","industry":"Electric Services","record":{"over":0,"over_by":[],"missing":0},"expires":"2028-05-31","renewal":{"status":"application_due_within_18_months","application_due":"2027-12-03"},"page":"https://passage-data.com/dmr/p/OK0041319","json":"https://passage-data.com/api/v1/permits/OK0041319"},{"permit":"OK0041289","name":"Grand River Dam Auth-Pensacola","major":false,"sic":"4911","industry":"Electric Services","record":{"over":0,"over_by":[],"missing":0},"expires":"2027-12-31","renewal":{"status":"application_due_within_18_months","application_due":"2027-07-04"},"page":"https://passage-data.com/dmr/p/OK0041289","json":"https://passage-data.com/api/v1/permits/OK0041289"},{"permit":"OK0044083","name":"Kiowa Power Partners (KPP)-KIA","major":true,"sic":"4911","industry":"Electric Services","record":{"over":0,"over_by":[],"missing":0},"expires":"2029-07-31","renewal":null,"page":"https://passage-data.com/dmr/p/OK0044083","json":"https://passage-data.com/api/v1/permits/OK0044083"},{"permit":"OK0035068","name":"OG&E -Sooner Generating Station","major":true,"sic":"4911","industry":"Electric Services","record":{"over":0,"over_by":[],"missing":4},"expires":"2027-03-31","renewal":{"status":"application_overdue","application_due":"2026-10-02"},"page":"https://passage-data.com/dmr/p/OK0035068","json":"https://passage-data.com/api/v1/permits/OK0035068"},{"permit":"OK0040169","name":"OG&E River Valley Generating Station","major":false,"sic":"4911","industry":"Electric Services","record":{"over":1,"over_by":[["Solids, total suspended",1]],"missing":0},"expires":"2028-10-31","renewal":null,"page":"https://passage-data.com/dmr/p/OK0040169","json":"https://passage-data.com/api/v1/permits/OK0040169"},{"permit":"OK0043966","name":"OG&E-Horseshoe # 9 &10","major":false,"sic":"4911","industry":"Electric Services","record":{"over":0,"over_by":[],"missing":0},"expires":"2026-04-30","renewal":{"status":"permit_expired","application_due":"2025-11-01"},"page":"https://passage-data.com/dmr/p/OK0043966","json":"https://passage-data.com/api/v1/permits/OK0043966"},{"permit":"OK0000442","name":"OG&E-Horseshoe Lake","major":true,"sic":"4911","industry":"Electric Services","record":{"over":0,"over_by":[],"missing":33},"expires":"2027-02-28","renewal":{"status":"application_overdue","application_due":"2026-09-01"},"page":"https://passage-data.com/dmr/p/OK0000442","json":"https://passage-data.com/api/v1/permits/OK0000442"},{"permit":"OK0045250","name":"OG&E-McClain Generating Station","major":true,"sic":"4911","industry":"Electric Services","record":{"over":0,"over_by":[],"missing":0},"expires":"2024-10-31","renewal":{"status":"permit_expired","application_due":"2024-05-04"},"page":"https://passage-data.com/dmr/p/OK0045250","json":"https://passage-data.com/api/v1/permits/OK0045250"},{"permit":"OK0034657","name":"OG&E-Muskogee 4, 5, & 6","major":true,"sic":"4911","industry":"Electric Services","record":{"over":0,"over_by":[],"missing":0},"expires":"2028-10-31","renewal":null,"page":"https://passage-data.com/dmr/p/OK0034657","json":"https://passage-data.com/api/v1/permits/OK0034657"},{"permit":"OK0000477","name":"OG&E-Mustang","major":false,"sic":"4911","industry":"Electric Services","record":{"over":0,"over_by":[],"missing":0},"expires":"2028-08-31","renewal":{"status":"application_due_within_18_months","application_due":"2028-03-04"},"page":"https://passage-data.com/dmr/p/OK0000477","json":"https://passage-data.com/api/v1/permits/OK0000477"},{"permit":"OK0000451","name":"OG&E-Seminole Generating Station","major":true,"sic":"4911","industry":"Electric Services","record":{"over":0,"over_by":[],"missing":0},"expires":"2030-01-31","renewal":null,"page":"https://passage-data.com/dmr/p/OK0000451","json":"https://passage-data.com/api/v1/permits/OK0000451"},{"permit":"OK0044181","name":"Oneta Power, LLC","major":true,"sic":"4911","industry":"Electric Services","record":{"over":0,"over_by":[],"missing":0},"expires":"2029-04-30","renewal":null,"page":"https://passage-data.com/dmr/p/OK0044181","json":"https://passage-data.com/api/v1/permits/OK0044181"},{"permit":"OK0000094","name":"Public Service CO-Southwestern","major":true,"sic":"4911","industry":"Electric Services","record":{"over":0,"over_by":[],"missing":0},"expires":"2026-12-31","renewal":{"status":"application_overdue","application_due":"2026-07-04"},"page":"https://passage-data.com/dmr/p/OK0000094","json":"https://passage-data.com/api/v1/permits/OK0000094"},{"permit":"OK0002429","name":"Public Service Co-Riverside","major":true,"sic":"4911","industry":"Electric Services","record":{"over":0,"over_by":[],"missing":0},"expires":"2026-12-31","renewal":{"status":"application_overdue","application_due":"2026-07-04"},"page":"https://passage-data.com/dmr/p/OK0002429","json":"https://passage-data.com/api/v1/permits/OK0002429"},{"permit":"OK0034380","name":"Public Service Co. of Oklahoma - NE Station","major":true,"sic":"4911","industry":"Electric Services","record":{"over":0,"over_by":[],"missing":6},"expires":"2026-12-31","renewal":{"status":"application_overdue","application_due":"2026-07-04"},"page":"https://passage-data.com/dmr/p/OK0034380","json":"https://passage-data.com/api/v1/permits/OK0034380"},{"permit":"OK0000108","name":"Public Service Co.- Tulsa Power","major":false,"sic":"4911","industry":"Electric Services","record":{"over":0,"over_by":[],"missing":0},"expires":"2031-06-30","renewal":null,"page":"https://passage-data.com/dmr/p/OK0000108","json":"https://passage-data.com/api/v1/permits/OK0000108"},{"permit":"OK0002682","name":"Public Service Co.-Comanche","major":true,"sic":"4911","industry":"Electric Services","record":{"over":0,"over_by":[],"missing":0},"expires":"2030-07-31","renewal":null,"page":"https://passage-data.com/dmr/p/OK0002682","json":"https://passage-data.com/api/v1/permits/OK0002682"},{"permit":"OK0043869","name":"Public Service Company of Oklahoma","major":true,"sic":"4911","industry":"Electric Services","record":{"over":0,"over_by":[],"missing":0},"expires":"2026-12-31","renewal":{"status":"application_overdue","application_due":"2026-07-04"},"page":"https://passage-data.com/dmr/p/OK0043869","json":"https://passage-data.com/api/v1/permits/OK0043869"},{"permit":"OK0000639","name":"Western Farmers Electric Co-Anadarko","major":true,"sic":"4911","industry":"Electric Services","record":{"over":4,"over_by":[["Solids, total suspended",4]],"missing":0},"expires":"2028-06-30","renewal":{"status":"application_due_within_18_months","application_due":"2028-01-02"},"page":"https://passage-data.com/dmr/p/OK0000639","json":"https://passage-data.com/api/v1/permits/OK0000639"},{"permit":"OK0035327","name":"Western Farmers Electric Co.-Hugo Plant","major":false,"sic":"4911","industry":"Electric Services","record":{"over":0,"over_by":[],"missing":0},"expires":"2027-12-31","renewal":{"status":"application_due_within_18_months","application_due":"2027-07-04"},"page":"https://passage-data.com/dmr/p/OK0035327","json":"https://passage-data.com/api/v1/permits/OK0035327"},{"permit":"OK0000647","name":"Western Farmers Electric Co.-Mooreland","major":false,"sic":"4911","industry":"Electric Services","record":{"over":1,"over_by":[["Oil and grease, hexane extr method",1]],"missing":0},"expires":"2027-04-30","renewal":{"status":"application_due_within_18_months","application_due":"2026-11-01"},"page":"https://passage-data.com/dmr/p/OK0000647","json":"https://passage-data.com/api/v1/permits/OK0000647"}]}