DEQ certified installers in Oklahoma
Oklahoma’s roster of DEQ certified onsite sewage installers covers 264 businesses across 0 counties. Pick a county to see who is based there.
Counties with the most deq certified installers
Every county with deq certified installers
- Adair5
- Alfalfa1
- Atoka2
- Beaver
- Beckham1
- Blaine
- Bryan9
- Caddo3
- Canadian6
- Carter6
- Cherokee11
- Choctaw1
- Cimarron
- Cleveland5
- Coal
- Comanche4
- Cotton
- Craig1
- Creek12
- Custer1
- Delaware9
- Dewey
- Ellis1
- Garfield1
- Garvin2
- Grady9
- Grant
- Greer
- Harmon
- Harper
- Haskell2
- Hughes3
- Jackson1
- Jefferson2
- Johnston1
- Kay1
- Kingfisher3
- Kiowa
- Latimer3
- Le Flore12
- Lincoln6
- Logan5
- Love1
- Major
- Marshall5
- Mayes2
- McClain6
- McCurtain6
- McIntosh8
- Murray1
- Muskogee6
- Noble
- Nowata
- Okfuskee1
- Oklahoma13
- Okmulgee4
- Osage5
- Ottawa3
- Pawnee2
- Payne9
- Pittsburg6
- Pontotoc5
- Pottawatomie9
- Pushmataha1
- Roger Mills
- Rogers13
- Seminole2
- Sequoyah7
- Stephens2
- Texas
- Tillman
- Tulsa16
- Wagoner6
- Washington2
- Washita
- Woods
- Woodward2
Where the roster is filed, and where the work happens
These records are organised by the address on the licence, and that address is not a service area. A Oklahoma licence is granted by Oklahoma DEQ and is valid across the state — the county tells you where the business is, not the limit of where they will go.
In practice a rural county showing two deq certified installers is rarely the real choice set. Every county page here lists its neighbours for exactly that reason.
Records as published August 26, 2026.