Yes, you can install your own septic system in Arkansas, but the state treats you the same as a professional contractor. You have to pass the state installer exam, pay the annual registration fee, hire a licensed Designated Representative to design the system, pull a construction permit, and pass inspection before you can legally use it. There is one narrow exemption for owners of large rural tracts, and even that does not waive the construction standards.
You Must Become a Registered Installer First
Arkansas law requires every person who builds, alters, or extends an individual sewage disposal system to hold a current installer registration with the Division of Environmental Health Protection.1Justia Law. Arkansas Code 14-236-115 – Registration of Installers There is no homeowner carve-out. If you want to do the physical work yourself, you become a registered installer or you are not legally doing the work.
Registration means passing a state-administered exam on installation standards and the onsite wastewater rules. The exam is offered nine times a year, January through September, at the Arkansas Rural Water Association facility in Lonoke, and no pre-registration is required.2Arkansas Department of Health. 2026 Installer Exam Dates and Study Packet Once you pass, you pay a $100 annual registration fee to the Arkansas Department of Health.3Arkansas Department of Health. Rules Pertaining to Onsite Wastewater Systems – Section 14.4 The registration renews every January 1, and you must attend at least one Department-approved training course each year to keep it active. Let it lapse past March 1 and you owe a late fee equal to half the renewal amount. Let it lapse for a full calendar year and you have to retake the exam.
One rule that catches homeowners off guard: a registered installer must be physically present at the job site during all phases of construction.4Arkansas Department of Health. Rules Pertaining to Onsite Wastewater Systems – Section 14.1 If you are the registered installer, you personally have to be on site for every step. You cannot send a friend or a subcontractor in your place.
The 10-Acre Exemption
One narrow path avoids the permit itself. If you own a tract of ten acres or more and are building a single residence where every component of the system sits at least 200 feet from any property line, the permit requirement is waived.5Arkansas Department of Health. Onsite Wastewater FAQs The construction standards still apply in full. You skip the application and the review fee, but every design and installation rule in the book still governs your system, and if it later causes problems the lack of a permit will not shield you from enforcement.
For anyone on a smaller lot or closer to property lines, this exemption does not apply and the full process is the only legal route.
You Still Need a Designated Representative to Design It
Holding an installer registration does not let you design your own system. Arkansas requires a licensed Designated Representative to evaluate your site and produce the design plan. Qualified individuals include registered professional engineers, registered land surveyors, licensed master plumbers, and registered sanitarians, with others sometimes qualifying based on soil science education and verified design experience.6Arkansas Department of Health. Rules Pertaining to Onsite Wastewater Systems – Section 2.9
The Designated Representative evaluates your property primarily through soil pits rather than the older percolation test method, which gives a more accurate picture of how water moves through the soil, how deep the water table sits, and whether bedrock or other restrictive layers will interfere with drainage.5Arkansas Department of Health. Onsite Wastewater FAQs The results dictate what system your lot can support. Favorable conditions may allow a standard gravity-fed system with perforated pipe in gravel trenches. Poor drainage, a high water table, or shallow bedrock can force an alternate system such as a mound, drip dispersal, or surface-discharging design.7Arkansas Department of Health. Rules Pertaining to Onsite Wastewater Systems – Section 2.1 Every lot has to have suitable primary and secondary absorption areas sized to the natural soil data.
To find one, call the health unit in your county and ask for the Onsite Environmental Specialist, who keeps a list of licensed professionals doing local evaluations and designs.5Arkansas Department of Health. Onsite Wastewater FAQs Fees range from several hundred to several thousand dollars depending on site complexity and system type.
Applying for the Construction Permit
With the evaluation and design in hand, submit your application for a Permit for Construction to the Onsite Environmental Specialist at your county health unit. The application must include the professionally prepared evaluation and design from your Designated Representative.
The state’s review fee is based on the square footage of the home the system will serve:8Justia Law. Arkansas Code 14-236-116 – Permits and Registration Fees – Annual Training Course – Transferability – Renewal
- 1,500 sq. ft. or less: $30
- 1,501–2,000 sq. ft.: $45
- 2,001–3,000 sq. ft.: $90
- 3,001–4,000 sq. ft.: $120
- 4,001 sq. ft. and larger: $150
- Alteration, repair, or extension of any existing system: $30
The Authorized Agent reviews the application to confirm the proposed system matches site conditions and meets state standards. Once approved, the permit is valid for one year.9Arkansas Department of Health. Rules Pertaining to Onsite Wastewater Systems – Section 2.67 If site or soil conditions change, or the information on the permit turns out to be inaccurate, the Authorized Agent can void the permit before construction begins. A voided permit can be revalidated, but only by going back through review.
Building the System
Before breaking ground, notify the Authorized Agent at least 24 hours before you plan to begin work.10Arkansas Department of Health. Rules Pertaining to Onsite Wastewater Systems – Section 4.7 Skipping that notice is a violation even if the installation itself is flawless. Emergency repairs are the one exception: you can begin immediately but must obtain a permit within ten working days.
Build the system exactly to the approved design. Deviating from the plan without a revised approval is the kind of shortcut that fails inspection and can mean tearing out finished work and starting over. Remember that as the registered installer, you have to be on site for every phase.
Inspection and the Operating Permit
When installation is complete but before you cover anything with soil, notify the Authorized Agent or Designated Representative that the system is ready. The trenches need to be open and every component visible so the inspector can verify the physical work matches the approved design.11Arkansas Department of Health. Rules Pertaining to Onsite Wastewater Systems – Section 4.10.2.1 Within five days of that notification, submit the required documentation to the local health unit confirming the system was installed according to the permit.
Once the installation passes, the state issues a Permit for Operation, which is your legal authorization to use the system.5Arkansas Department of Health. Onsite Wastewater FAQs Without it, connecting the system to your home’s plumbing is not authorized. Inspection is where DIY installations most often run into trouble, because an experienced inspector can spot grading errors, pipe-slope problems, and absorption field issues at a glance.
What Happens if You Install Without a Permit
Installing a septic system without proper registration exposes you to the penalties in Arkansas Code § 14-236-106.1Justia Law. Arkansas Code 14-236-115 – Registration of Installers A separate statute, § 14-236-117, imposes a duty to prosecute violations, so enforcement is not discretionary once local officials discover an unpermitted system.
Beyond fines, an unpermitted system creates real problems when you try to sell, refinance, or get homeowner’s insurance. Most real estate transactions require proof of a permitted, functioning septic system, and the absence of that paperwork can kill a deal or force an expensive replacement at the worst possible time.