Oklahoma County County · Pop. 681,054
Oklahoma City is the capital and largest city of Oklahoma, spreading across one of the nation's largest city footprints at over 620 square miles. While the urban core has extensive municipal sewer service, the city's massive geographic extent means thousands of homes within city limits and many more in surrounding unincorporated communities use onsite septic systems. The dominant soil challenge in the Oklahoma City area is the smectite clay content in Grady and related series, which causes soil to shrink and crack when dry—creating fast preferential flow paths that bypass proper treatment—and to swell when wet, limiting drainage. Aerobic Treatment Units (ATUs) are extremely common in the Oklahoma City metro because they provide mechanical treatment that compensates for poor natural soil conditions. Oklahoma City's severe weather risk, including frequent tornado activity, means homeowners should inspect their septic system after major storms.
Oklahoma City, OK
Cyclone Septic & Plumbing provides professional septic services in Oklahoma City, OK and surrounding areas. Contact them for septic pumping, repair, and inspection services.
Oklahoma City, OK
Irwin Septic Tank Cleaning Plumbing & Repair LLC provides professional septic services in Oklahoma City, OK and surrounding areas. Contact them for septic pumping, repair, and inspection services.
Oklahoma City, OK
Owen's Septic Service provides professional septic services in Oklahoma City, OK and surrounding areas. Contact them for septic pumping, repair, and inspection services.
Tulsa, OK
Able Aerobic & Septic Services, Inc provides professional septic services in Tulsa, OK and surrounding areas.
Tulsa, OK
J&J Pumping Services provides professional septic services in Tulsa, OK and surrounding areas.
Tulsa OK Septic & Plumbing Services, Porta Potties & Storm Shelters provides professional septic services in Tulsa, OK and surrounding areas.
$2,000 – $15,000
$200 – $800
$300 – $600
$3,500 – $20,000
$275 – $600
$500 – $5,000
$6,000 – $25,000
$300 – $3,000
$50 – $500
$500 – $8,000
| Service | Average Cost |
|---|---|
| Septic Tank Pumping | $200 - $375 |
| Septic System Installation | $6,000 - $18,000 |
Oklahoma City area soils are dominated by Grady fine sandy loam and Port silt loam in upland areas. Port silt loam is a deep, well-drained mollisol with moderate permeability. Grady soils on floodplain terraces have a slow-draining, fine-textured subsoil with high smectite clay content. Canadian River bottomland soils include Yahola silt loam and Reinach very fine sandy loam—deep, poorly drained alluvial soils.
Port silt loam (USDA series) in the Oklahoma City uplands is a deep Pachic Haplustoll with moderate permeability in the surface horizon but slow permeability in the subsoil clay horizon. It is a borderline soil that sometimes supports conventional systems but often requires pressure distribution. Grady fine sandy loam on terraces contains high smectite clay that dramatically limits permeability when wet. Canadian River alluvial soils (Yahola, Reinach series) are poorly drained and typically unsuitable for conventional systems. ATU drip irrigation systems are the most commonly installed alternative in Oklahoma County.
Oklahoma County Health Department and ODEQ administer septic permits under OAC 252:641. ATU systems require a licensed maintenance provider contract filed with ODEQ and quarterly or semi-annual service visits. New systems must maintain a 75-foot setback from water supply wells. Minimum lot size for new septic installation is one-half acre. ODEQ's Oklahoma Environmental Portal tracks permits statewide.
Oklahoma County Health Department and ODEQ jointly administer septic permits under OAC 252:641. Oklahoma City proper has extensive municipal sewer service, but unincorporated Oklahoma County and adjacent Pottawatomie, Cleveland, and Logan County areas rely on septic systems. A licensed ODEQ evaluator or PE must complete a site evaluation before permit issuance. ATU systems require a signed maintenance contract.
Septic contractors in the surrounding region