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Septic System Abandonment

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Are you building a brand-new home? Are you adding bedrooms on to your current home? Is your current septic system doomed and in need of a new system? Whatever the issue may be, TKS Contracting can help you with a FREE ESTIMATE!


We offer installations of conventional septic systems for new construction homes, additions, remodels or total septic replacement due to aging or failing systems. We install both concrete and poly septic tanks ranging from 1000 gallons all the way up to 5000 gallons for commercial use. Nearly all new septic tank installations require a permit from the local County or City municipality. We can help you obtain those permits with our full-service permitting program. After permitting is obtained, we will set a time-line to have your project completed as soon as possible. We are your one-stop shop in the Phoenix area for your septic tank installation needs.



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Chamber Disposal Field Installation

Phase I Permit Application - Site And Soil Testing (perc test)

Septic System Installation

Full Installation Service

In addition to selecting the correct septic tank size, the disposal field complexity must be calculated using the numbers from the bedroom/fixture count and the SAR number obtained in Phase I-Site and Soil testing. The most common conventional septic system disposal fields in Arizona are seepage pit(s), leach lines, or chamber systems. Each disposal field is quite different from the other and each are used for separate needs and applications. Each field also has it's own special calculation to ensure that the depth or length of the fields is adequate to take the estimated effluent that is produced each day from the septic tank. 

Designing a septic system is a matter of acquiring the correct septic tank size and the correct disposal method and it's individual complexity. Proper septic system design will ensure that you will have a system that will last you many years and perform it's job properly. Once the system is designed and all of the documents are submitted correctly to the County, an Approval to Construct will be issued by the County. This is the green light needed to commence the installation process.


TKS offers complete permitting service for both phases of this process. Our service includes the completion of all applications, gathering of all required documents, complete CAD-designed site plans, inspection scheduling and more. We've done all of the hard work in learning what is required to complete these permits as quickly as possible. Let us help you today!

When a septic system fails and you must replace it, the current system will need to be properly abandoned. In Maricopa County, there is a required abandonment permit that must also be obtained in addition to the alteration or new installation permit. Septic tank abandonment is needed for a couple of different reasons:

  • ​Sometimes only parts of the system need to be abandoned. This is called a septic system alteration and is discussed above. If you are only altering the tank or the field, you will only have to abandon the portion that you are replacing.
  • ​If you are replacing the entire septic system, the entire system will need to be abandoned. This situation will occur if you are abandoning a complete failure system, upgrading to a larger system or choosing to connect to the city sewer.

The abandonment process can be achieved in two ways. We can slurry or dirt fill the septic tank and field or we can remove it in entirety. We will advise which option is best for your particular situation.


Septic System Installations, Septic System Permitting, Septic SYstem Design, Septic to Sewer Conversion Phoenix, Cave Creek, Paradise Valley, New River, Buckeye, Surprise, Mesa, Queen Creek, Scottsdale

Check out the links here to help you understand the process. 

2000 Gallon Concrete Septic Tank and Infiltrator EZ Flow Trench Disposal Field Installation

Chamber Disposal Field Installation

Phase II Permit Application and Septic System Design

TKS Contracting offers support through all stage of the installation process. 

  • Phase I Permit Application and Site/Soils Evaluation
  • Phase II Permit Application and Septic System Design
  • Full Installation Service
  • Abandonment of Old System (if required)

Once the Approval for Construction has been issued by the County, we can get your installation job scheduled to begin. Most systems can be installed within one week's time. Our installation crew uses our own excavating equipment and we are fully licensed and insured to handle this big job. Our installation team has years of experience and are some of the nicest guys you'll ever meet. Excavating is done to set the septic tank first and then the disposal field is excavating and installed. Upon completion of that, the two parts of the system are tied together with the proper plumbing and connections.


When the installation construction is completed, an inspection will be called into the respective County. A representative is usually on-site with 48 hours to inspect the final construction of the septic system before any portion of the system is covered up. Once we have received the tag to go ahead and cover, we will complete the project with precision and leave your septic area clean and presentable. And that's it! You can now enjoy the use of your properly installed septic system.

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This phase of the permitting process is where you submit your septic system design to the county for approval to construct. This phase includes selecting the proper septic tank size and designing a disposal method that is best based upon the SAR number that was provided in Phase I.  

Selecting the proper septic tank size is done one of two ways and may actually consider both in close calculations. First, a current floor plan design will be required for this permitting phase to determine the number of bedrooms in the home and the number of plumbing fixtures that will be connected to the septic system. (this is includes garage sinks, barns, pool bathrooms, guest quarters, etc). Each plumbing fixture in the home is given a number based upon water usage required to operate each. An example of this would be a bathroom sink would represent 1 fixture where a toilet would represent 3 fixture-unit count; more usage, more water. All fixtures are added to a calculation sheet and a grand total of "fixtures" is notated. Also counted is the number of bedrooms in the home. Dens may also be counted as bedrooms in some cases. With these two numbers we are able to properly identify the best tank size for the home's predicted water usage. Sometimes when a new home is constructed, there are plans to build an addition or a garage/shop in the near future. These future additions can be taken into consideration when selecting a tank size. The system may appear to be a bit over-sized for the current home, but that eliminates the need for septic system re-construction down the road when the additional rooms or fixtures go over the permitting limit.




The Phase I permitting application includes completing a form provided by the County that includes the general overview of the property and the plans for the new septic system. This permitting phase requires a plot map with the proposed home site so that proper setback requirements can be met in determining the placement of the septic system.
Part of the Phase I permitting is to have a site and soil test conducted, interchangeably referred to as a perc test. This test is completed by digging three holes on the property. Two in the area of the proposed disposal field and one in the proposed reserve disposal field. Each hole is dug to the County requirements. Once the holes are prepped, an inspection is called into the County and a member of their team will visit the property for a site and soils evaluation. During this inspection, an engineer will use a variety of testing methods to determine the SOIL ABSORPTION RATE (otherwise known as the SAR). This is the rate at which the soil is able to absorb water that is introduced. This number is used to help design the complexity of the disposal field that will be required to receive the effluent water from the septic tank once it is installed. The inspector will also provide a site analysis based upon proposed plot map to ensure that required setback measurements are possible with proposed home site. After testing and observation are completed, the inspector will leave a tag and the property owner or agent will be sent the SAR results and Phase II permitting can move forward.