Oklahoma Aerobic Guide is a directory of Department of Environmental Quality certified-installer rows with an aerobic spray flag. It does not design, install, or service systems, and it does not publish installer price ranges. Ask the company for a written quote at the address. How we check the list explains the roster method.
Aerobic septic installation cost Oklahoma: the fees you can check
The figures below are copied from the Department of Environmental Quality fee schedule for Chapter 252:641, Individual and Small Public On-Site Sewage Treatment Systems, effective July 1, 2026 through June 30, 2027. They are DEQ fees. They are not an installer’s price to build the system.
OAC 252:641-10-1 says an aerobic treatment system is only for sewage, and it cannot be used when average daily flow is under 100 gallons a day or over 1,500 gallons a day, or when wastewater has a total biochemical oxygen demand over 2.5 pounds a day. Designs outside that range are permitted as alternative systems. The rows below are the schedule lines that match a new system at or under 1,500 gallons a day.
- Soil test, DEQ augered
- $357.28. Schedule row: “Soil Test - DEQ Augered.”
- Soil test, applicant pits
- $214.36. Schedule row: “Soil Test - Pits Provided by Applicant.”
- DEQ inspects, new
- $500.19. Schedule row: “Authorization/Permit to Construct - DEQ Inspect-Design Flow <= 1500 gpd.”
- Self-inspect, new
- $357.28. Schedule row: “Authorization to Construct - Self Inspect-Design Flow <= 1500 gpd.”
- In training, new
- $357.28. Schedule row: “Authorization/Permit to Construct - (In Training) Design Flow <=1500 gpd.” The schedule prints that label. This page does not add a definition for “in training.”
- DEQ inspects, modify
- $357.28. Schedule row: “Authorization/Permit to Construct - DEQ Inspect-Modify Existing System.”
- Self-inspect, modify
- $214.36. Schedule row: “Authorization to Construct - Self Inspect-Modify Existing System.”
- Alternative plan review
- $285.80. Schedule row: “Alternative System Plan Review.” Use this when the design is an alternative system, including a design that 252:641-10-1 sends off the aerobic path.
- Existing system check
- $357.28. Schedule row: “Existing System Evaluation.”
- Over 1,500 gpd
- $643.08. Schedule row: “Authorization/Permit to Construct - DEQ Inspect-Design Flow >1500 gpd.” An aerobic treatment system cannot be used above 1,500 gallons a day under 252:641-10-1, so this row is not the aerobic path.
Which report comes before the authorization
DEQ’s on-site sewage page describes three reports. They are not the same test, and they do not all allow an aerobic system.
A soil profile uses at least three holes or pits in the dispersal area. DEQ says the result can show every allowable type: conventional subsurface, aerobic with spray or drip, or a lagoon. Only DEQ or a DEQ-certified soil profiler may do that test.
A percolation test may only identify a site for a conventional subsurface system. It is not the test for aerobic spray or drip. OAC 252:641-3-2 says the same limit, and it also bars percolation tests in a scenic river corridor and in a water body protection area.
Design-only uses the property location and is always based on Group 5 soil. DEQ says design-only may be used for aerobic spray or a lagoon, not for drip.
Before a new system or a modification, DEQ says an authorization to construct must be purchased and issued. DEQ reviews the on-site sewage report before it issues that authorization. The system may not be placed in operation until DEQ inspects and approves it, or a certified installer installs it, self-inspects it, and approves it. A certified installer’s final inspection is submitted to DEQ within 15 days. Source: DEQ, On-Site Sewage Treatment, and OAC 252:641.
What changes the quote, without a dollar range
The schedule changes with the path: who digs the soil pits, whether DEQ or a certified installer inspects, whether the job is new or a modification, and whether the design stays inside the aerobic flow limit or becomes an alternative system. Those are published fees. They are not the whole job.
The rules also change what the installer has to build. OAC 252:641-10-2 requires a trash tank and an aerobic treatment unit. If spray is the dispersal method, there must be a certified method to disinfect the effluent. If that method is chlorine, a free chlorine residual of 0.2 mg/L must be kept in the pump tank. When dispersal is pressurized, there must be a pump tank with a high-water alarm set to alert the owner if the tank becomes more than half full. DEQ’s residential fact sheet says disinfection is required for spray and is typically chlorine, in liquid or tablet form.
Spray and drip are different yards. OAC 252:641-12-7 says a spray field is preceded by an aerobic treatment unit, uses at least two sprinkler heads, and is vegetated or terraced so water does not run off. OAC 252:641-12-6 says a drip field is preceded by an aerobic treatment unit and by a filter that stops particles larger than 100 microns. Which dispersal the soil report allows changes the parts. It does not, by itself, publish a price.
This directory does not publish an installer price range for installation, replacement, pumping, or a later service visit. Compare system types on aerobic versus conventional septic, then ask for a written quote. For a new system, start with aerobic septic installation.
The first two years are the installer’s job
OAC 252:641-10-3(a) states: “The installer of any aerobic treatment system including those providing nitrogen reduction shall maintain the aerobic treatment system for a period of two years following the date the system was installed at no additional cost to the owner.” DEQ’s residential fact sheet puts the same rule in homeowner language: the maintenance cost for those two years is included in the cost of the installation.
During those two years the installer, in the rule’s words, is responsible for:
- repairing, adjusting or replacing any broken or malfunctioning parts;
- when spray dispersal is used, testing and recording the free chlorine residual in the pump tank at least once every six months;
- measuring and recording the depth of the sludge in the trash tank at least once every six months;
- measuring and recording the volume of the sludge in forced-air aerobic treatment units at least once every six months;
- when pump tanks are used, a clarity test at least once every six months, recorded as passing or failing;
- notifying the owner in writing of the maintenance provided at each visit;
- keeping those records at the business for three years after the service date.
OAC 252:641-10-3(b) says the installer is not responsible when the owner or operator is the sole cause of the damage. The rule’s examples are a spray head that retracts properly but is damaged by the homeowner, excessive water use, and harmful items poured into the system. Subsection (c) says that after the two years, “the owner of the aerobic treatment system shall be solely responsible for maintaining or hiring someone to maintain the system so that it operates as designed.” If the installer does not provide the required maintenance, the fact sheet says to call DEQ at 1-800-522-0206. Sources: OAC 252:641-10-3; DEQ, Residential Aerobic Treatment Systems.
Aerobic septic maintenance cost Oklahoma after year two
The state rule does not set a dollar price for maintenance after the two years. The owner does the work or hires someone. This directory does not price that visit. Service tags on aerobic septic maintenance are a starting point. Confirm the address, what a visit includes, and the price when you call.
Edmond Ordinance 3477
Inside Edmond, City Ordinance No. 3477 adds local paperwork on top of the state rule. Apply it to property in Edmond’s jurisdiction. A mailing address that says Edmond does not, by itself, prove the house is inside those limits.
Section 21.03.091(B), Section 3, says the builder shall give the City a copy of the contractual agreement with the installer for the two-year mandatory maintenance service required by ODEQ Title 252, Chapter 641, Subchapter 10. That copy is one of the builder’s requirements for a certificate of occupancy. The builder also gives the homeowner a copy of that contract and a copy of the ordinance.
Section 4 says a person operating an individual aerobic sewage treatment system must obtain a qualified maintenance service provider for annual maintenance. The ordinance defines that provider as a DEQ-certified installer, or a maintenance provider with at least a current class D wastewater license. Section 5 says the property owner and the occupant shall each submit a report of annual maintenance to the City of Edmond Building Services Department once a year. After the City confirms compliance, it issues an operation permit good for one year. The ordinance says a permit fee may be applicable. It does not print the fee, so this page does not invent one. The same section sets a violation fine at a maximum of $249 a day plus court costs. That fine is not a maintenance price.
The City’s aerobic treatment page summarizes the later duty this way: after two years, the homeowner provides yearly verification of continued professional inspection and maintenance. The ordinance text above is the rule. Source: Edmond Ordinance No. 3477 (21.03.091). City summary: Edmond, Aerobic Treatment Maintenance.
The same ordinance sets spray setbacks for an individual aerobic system. Section 2 says wastewater effluent shall not be sprayed on public streets, public property, or property owned by another person. The surface application area stays at least 15 feet from adjoining public or private street right-of-way, public property, or another person’s property, and at least 25 feet from the main residential structure. Those distances change where heads can go. They are not a price.
How many roster companies, by area
The counts below are the company cards on this site’s home page. Each card is one name and phone that match a DEQ certified-installer row with an aerobic spray flag. The city is the roster mailing city, not a coverage area. The three areas are the same groups the directory uses: Central Oklahoma, the Tulsa area, and the rest of Oklahoma.
- All Oklahoma
- 136 companies.
- Central Oklahoma
- 36 companies in 24 mailing cities. Blanchard 5, Choctaw 3, Oklahoma City 3. Edmond, Mustang, Tuttle, and Chandler have 2 each. The other 17 Central Oklahoma mailing cities have 1 each.
- Tulsa area
- 29 companies in 14 mailing cities. Claremore and Inola have 4 each. Broken Arrow and Collinsville have 3 each. Five mailing cities have 2, and five have 1.
- Rest of Oklahoma
- 71 companies in 55 mailing cities. Stillwater, McAlester, Bristow, and Broken Bow have 3 each. Eight mailing cities have 2, and 43 have 1.
Open the company directory or the mailing cities. For Oklahoma City addresses, the city page is aerobic septic system Oklahoma City. Companies with an Edmond mailing city are on the Edmond page. Confirm the job and the address when you call. A listing is not a quote.
Quick answers
How much does an aerobic septic system cost in Oklahoma?
This directory does not publish an installer price. The costs a homeowner can check are Department of Environmental Quality fees on the Chapter 252:641 schedule effective July 1, 2026 through June 30, 2027. For design flow at or under 1,500 gallons a day, a DEQ-augered soil test is $357.28, a soil test with applicant pits is $214.36, an authorization to construct that DEQ inspects is $500.19, and a self-inspected authorization is $357.28.
Who maintains a new aerobic system for the first two years?
OAC 252:641-10-3 says the installer maintains the aerobic treatment system for two years after installation at no additional cost to the owner. After that, the owner maintains it or hires someone. DEQ’s residential fact sheet says to call 1-800-522-0206 if the installer does not provide that maintenance.
What does Edmond Ordinance 3477 require?
For an individual aerobic system, the builder must give the City a copy of the installer’s two-year maintenance agreement under ODEQ Title 252, Chapter 641, Subchapter 10, before a certificate of occupancy, and must give the homeowner a copy. The owner and occupant must each submit a yearly maintenance report to Edmond Building Services. The ordinance says an operation-permit fee may apply. It does not print that fee.
Does this directory price an installer’s quote?
No. Oklahoma Aerobic Guide lists Department of Environmental Quality aerobic spray roster matches. It does not publish installer price ranges for installation, repair, or maintenance.
Sources
- DEQ Chapter 252:641 fee schedule, July 1, 2026 through June 30, 2027
- OAC 252:641, including 252:641-3-2, 252:641-10-1, 252:641-10-2, 252:641-10-3, 252:641-12-6, and 252:641-12-7
- DEQ, On-Site Sewage Treatment
- DEQ, Residential Aerobic Treatment Systems
- Edmond Ordinance No. 3477
- City of Edmond, Aerobic Treatment Maintenance