If you’re moving to the Hill Country from a home with city sewer, a septic system may be unfamiliar. It doesn’t need to be intimidating. It’s simply another part of the property you’ll want to understand before you buy.
Many homes around Wimberley, Driftwood, and Dripping Springs use septic systems. Instead of sending wastewater to a centralized sewer system, they treat and disperse it on the property. That means the homeowner is responsible for maintaining the system and planning for service and repairs.
My recommendation for buyers is straightforward: schedule a separate septic inspection early in your option period and request the available county records. For sellers, gathering those records and reviewing the system’s condition before listing can help prevent surprises once you’re under contract.
Here’s where I start with my clients.
Start With the County Records
Before an inspector opens a tank, I like to find out what the county has on file.
For properties in Hays County, I typically submit an open records request for the septic records. Depending on the property and the available documentation, those records may include the permit, approved plans, and information about the system.
They can help you understand what was approved and give your septic professional something to compare with what’s on the property today. Records alone don’t tell you whether the system is working properly, which is why I recommend pairing them with an inspection.
You can find request instructions through Hays County’s septic FAQ, or contact Development Services at 512-393-2150 for guidance.
This article focuses on Hays County. If the property is in another county, start with the permitting authority for that address.
Know What Kind of System You’re Buying
You don’t need to become a septic expert, but knowing the basics helps you ask better questions.
Conventional gravity system: Wastewater passes through a septic tank, then flows to a soil disposal area. Ask: When was it last inspected and pumped? Where are the tank and disposal area?
Aerobic treatment system: Uses air and mechanical components to treat wastewater before disposal. Ask: Who maintains it? Are service records available? Have there been alarms or repairs?
Drip dispersal: Distributes treated wastewater through a network of drip lines. It is a disposal method that may be part of an advanced treatment system. Ask: Where are the lines, and what maintenance does the complete system require?
The important thing is understanding the complete system on that particular property, including its maintenance needs.
A Septic Inspection Is Separate From a Home Inspection
Don’t assume your standard home inspection includes a full evaluation of the septic system. Ask what’s covered and arrange a separate septic inspection with a qualified professional.
The scope can vary by system and provider. Before booking, ask whether the inspection includes:
Reviewing available permits and plans.
Locating and accessing the tanks.
Checking accessible components and tank conditions.
Evaluating sludge and scum levels.
Checking pumps, aerators, controls, and alarms, where applicable.
Evaluating the disposal area for visible signs of problems.
Providing a written report with findings and recommendations.
Also ask about access requirements, whether pumping is needed, and any additional charges. Knowing the scope up front helps you understand what the inspection will—and won’t—tell you.
If You’re Buying: Schedule It Early
I recommend scheduling the septic inspection as early as possible in your negotiated option period. That gives you time to review the findings, ask questions, and discuss any concerns before your termination deadline.
Request the county records as soon as possible, too. They may take time to arrive.
Along with the inspection, ask the seller for:
Pumping and service records.
Any current maintenance contract.
Documentation of repairs or replaced components.
Information about recurring alarms, backups, odors, or wet areas.
If you’re considering an addition, guesthouse, or another change that could increase wastewater use, bring that up early. Ask the county and a qualified septic professional whether the existing system can accommodate your plans and what approvals might be needed.
That’s especially relevant here in the Hill Country, where buyers often see a property’s potential beyond the home that’s already there.
If You’re Selling: Get Your Information Together Before Listing
One of the most helpful things you can do is gather your septic paperwork before the house goes on the market.
Start with the permit and plans, any maintenance contract, and records of pumping, service, and repairs. If you don’t have them, request the available county records.
Depending on the system’s age, service history, and any known concerns, I may also recommend a septic inspection before listing. It can give you time to understand an issue, get estimates, or complete repairs before a buyer is working against an option-period deadline.
When completing your seller’s disclosure, be accurate about what you know. The goal is to give buyers clear information and help the transaction move forward with fewer surprises.
Plan for Maintenance After Closing
Before closing, buyers should know who will service the system and what needs to happen when ownership changes.
Hays County identifies aerobic and advanced treatment systems, including drip systems, as requiring maintenance contracts. Homeowner maintenance has additional eligibility and training requirements, so don’t assume you can take over servicing the system yourself.
Ask Hays County Development Services to confirm the requirements for your property, including any ownership paperwork, maintenance contract submission, and deadlines. Confirm with the service provider whether the seller’s existing contract can transfer or whether you need a new one.
It’s a small step that’s much easier to handle before you move in.
Common Questions About Buying a Home With Septic
Should I get a septic inspection even if the seller says the system works fine?
I recommend one. The seller’s experience is useful, but an independent inspection gives you additional information about the system’s current condition and maintenance needs.
Who pays for the septic inspection?
Buyers commonly arrange and pay for their inspection, but responsibility for the cost can be negotiated. It is generally a separate expense from the standard home inspection.
What if the county has no records?
Missing records are a reason to investigate further. They don’t, by themselves, establish whether a system is functioning properly.
Ask the county and your septic professional what additional steps are appropriate before making a decision about the property.
How often does a septic tank need pumping?
For conventional systems, TCEQ recommends pumping every three to five years. The right schedule depends on the system and household use.
For aerobic systems, pumping needs depend on sludge levels and the manufacturer’s recommendations. Your service provider can help establish the appropriate schedule.
Does having septic mean there’s no monthly cost?
You may not have a sewer utility bill, but septic still has ongoing costs. Plan for inspections, pumping, maintenance contracts where required, electricity for systems with powered components, and eventual repairs or replacement. I have personally found septics to be much less expensive on a monthly basis than having a traditional bill.
Buying or Selling in the Hill Country?
Septic systems are a familiar part of owning property here. With the right records, an inspection, and a clear maintenance plan, you can approach the process with more confidence.
If you’re considering buying or selling in Wimberley, Driftwood, Dripping Springs, or the surrounding Hill Country, I can help you know what to request, who to contact, and how to work those steps into your transaction.
Keep reading: Moving to Wimberley, Texas? What You Should Know | Buying in the Hill Country | Selling in the Hill Country
Anna Untersee | NestHaven Properties
512-484-5360
anna@nesthavenproperties.com
This article provides general real estate information. For requirements and advice specific to a property, contact the local permitting authority and a qualified septic professional.