If you have ever wondered, “Do I have a septic system or am I connected to the sewer?” you are not alone. Especially in the Highland Lakes area, homes can have very different wastewater setups depending on where they are located, when they were built, and what utility infrastructure serves the property.
The bottom line: The fastest ways to determine whether your home has septic or sewer are to check your utility bill, look at your property records, inspect your yard for septic components, and confirm your home's wastewater connection with a qualified professional. Knowing which system you have matters because septic systems and sewer systems require different maintenance, repairs, and troubleshooting.
For homeowners in Lago Vista, Jonestown, Point Venture, Spicewood, Marble Falls, Horseshoe Bay, and other Highland Lakes communities, understanding your home's wastewater system is especially important. Lake-area properties may have septic systems, public sewer connections, grinder pumps, or other unique wastewater configurations. At Lantz Home Services, we have spent more than 50 years working on the plumbing systems found throughout Central Texas, including the older lake homes, hillside properties, and newer construction that make this area unique.
Septic vs. Sewer: What Is the Difference?
Before figuring out which system your home has, it helps to understand what each one does.
What Is a Septic System?
A septic system is an onsite wastewater treatment system. Instead of sending wastewater into a municipal sewer network, your home's wastewater flows into a buried septic tank. Solids settle in the tank while liquid wastewater moves toward a drainfield, where the soil provides additional treatment.
Septic systems are common in rural and semi-rural areas that are not connected to centralized sewer systems. The Environmental Protection Agency recommends homeowners understand where their septic tank and drainfield are located and maintain the system regularly.
In the Highland Lakes area, septic systems are an important part of the local infrastructure. The Lower Colorado River Authority, or LCRA, regulates on-site sewage facilities in portions of the Highland Lakes and Lake Travis areas because of the importance of protecting local water quality.
What Is a Sewer System?
A sewer system connects your home's wastewater plumbing to a centralized public or community wastewater system. Your home's drains carry wastewater through a sewer lateral, which eventually connects to the larger sewer network.
With a sewer connection, you generally do not have a septic tank and drainfield on your property. Instead, the wastewater leaves your property through the sewer line.
However, there is an important Highland Lakes wrinkle: having a sewer connection does not necessarily mean wastewater flows downhill to the street by gravity. Some lake-area and hillside homes use grinder pumps or other pumping systems to move wastewater where gravity alone is not enough. Lantz Home Services regularly works with these types of systems throughout the area.
How to Tell If Your Home Has Septic
If you recently purchased a home, inherited a property, or simply never thought about where your wastewater goes, there are several clues you can check.
1. Check Your Utility Bill
Your wastewater charges can be one of the easiest clues.
If your utility bill includes a sewer or wastewater charge, your home may be connected to a centralized sewer system. If there is no sewer charge, that may indicate a septic system.
This is not a perfect test, though. Utility billing varies by community, so do not rely on this clue alone.
2. Look at Your Property Records
Your home's original building plans, property records, septic permits, or “as-built” drawings may identify the wastewater system.
The EPA specifically recommends checking property records and septic system documentation when determining whether a home has an onsite wastewater system.
For homes near the Highland Lakes, LCRA's On-Site Sewage Facility program is another useful resource for determining whether a property falls within its septic jurisdiction and for accessing information about applicable septic requirements.
3. Look for a Septic Tank Access Point
Walk your property and look for septic tank lids, access risers, inspection ports, or other covers.
The location is often somewhere between the home and the drainfield, although the exact configuration varies. Older septic tanks can be surprisingly difficult to locate because they may not have obvious access points at the surface.
Important: Do not randomly dig around your yard trying to find a septic tank. If you are unsure where it is located, a qualified septic professional can help locate the system safely.
4. Look for a Drainfield
A septic system usually has a drainfield somewhere on the property. Depending on the system and landscape, it may not be obvious.
You may notice changes in vegetation or soil in the general area, but these signs alone cannot confirm that you have septic.
5. Ask Your Neighbors
This is one of those situations where your neighbors may know more about your home than you do.
In established Highland Lakes neighborhoods, homes built around the same time and under similar development conditions may share similar wastewater arrangements. That does not guarantee your property has the same setup, but it can provide another useful clue.
How to Tell If Your Home Has Sewer
If you do not see signs of a septic tank or drainfield, your home may be connected to sewer.
Look for a sewer cleanout near your home or property line. A cleanout provides access to the sewer line for inspection and cleaning.
Your utility bill may also show wastewater charges, and your property records may identify the sewer connection.
If you have a sewer connection but your home sits on a steep hillside, near the lake, or in an area where gravity drainage is difficult, you may also have a grinder pump.
A grinder pump collects wastewater and pumps it through a pressurized line to the sewer system. These systems are especially relevant to certain lake-area properties, which is why a sewer problem is not always simply a “sewer pipe” problem.
What If You Still Cannot Tell?
This is where guessing can get expensive.
If you cannot determine whether your home has septic, sewer, or a grinder pump system, a professional plumbing evaluation can help identify how wastewater leaves your home.
A plumber can inspect accessible plumbing components, look for cleanouts and pump equipment, review symptoms, and determine whether further investigation is needed.
A sewer camera inspection can also be useful when the concern involves the condition of a sewer line. Instead of guessing where a blockage, root intrusion, damaged pipe, or other problem is located, a camera allows the plumbing professional to see inside the line and make recommendations based on what is actually there.
Signs Your Septic System May Need Attention
Whether you have lived in your home for 20 years or just moved in, pay attention to changes in how your plumbing behaves.
Common warning signs of a septic problem include:
- Toilets, sinks, showers, or tubs backing up
- Multiple drains becoming slow at the same time
- Gurgling sounds from plumbing fixtures
- Sewage odors around the tank or drainfield
- Standing water or unusually damp areas near the septic system
- Unusually lush or bright green grass over part of the drainfield
- Recurring wastewater backups
These symptoms can have multiple causes, so a slow drain does not automatically mean your septic tank has failed. A professional diagnosis can help determine whether the problem is inside the home, in the sewer line, at the septic system, or somewhere else.
Signs Your Sewer Line May Need Attention
Sewer problems can look a lot like septic problems, which is why knowing what system your home has is so useful.
Watch for:
- Several drains slowing down at once
- Frequent sewer backups
- Gurgling toilets or drains
- Sewer odors
- Water backing up when another fixture is used
- Recurring clogs
- Wet or unusually green areas of grass near the sewer line
- Problems that keep returning after drain cleaning
Tree roots, aging pipes, shifting joints, corrosion, blockages, and damaged sewer lines can all contribute to recurring problems.
In older Central Texas homes, the age and material of the plumbing system can also matter. A professional sewer camera inspection can help identify what is happening inside an underground line before you commit to a major repair.
What About Plumbing, AC, and Electrical Systems?
Your wastewater system may not be the only home system worth understanding.
Highland Lakes homeowners deal with a unique combination of hard water, Texas heat, aging plumbing, lake-area properties, electrical demands, and wastewater systems. A plumbing problem can sometimes occur alongside issues involving electrical equipment, pumps, or HVAC condensate drainage.
For example, a grinder pump relies on electrical components to operate. An HVAC system also produces condensate that must drain properly. Plumbing, heating and air conditioning, and electrical systems may seem completely separate until something stops working.
That is one reason having a local company that understands multiple home systems can make life easier. Lantz Home Services provides plumbing, sewer and drain, air conditioning, heating, and electrical services throughout Central Texas.
Protect Your Home With the Ultimate Home Care Plan
Home maintenance is much easier when you do not have to remember everything yourself.
The Ultimate Home Care Plan from Lantz Home Services is designed around proactive maintenance for the systems homeowners depend on most. Membership options can include plumbing, HVAC, electrical, and grinder pump coverage, with scheduled inspections and member benefits designed to help identify developing problems before they become emergencies.
For Highland Lakes homeowners, that proactive approach can be particularly valuable. Your home may have a septic system, sewer line, grinder pump, aging plumbing, or a combination of systems that require regular attention.
The goal is simple: find problems before they find you at the worst possible time.
Serving Lago Vista and the Highland Lakes
Lantz Home Services is based in Lago Vista and has served the community for more than 50 years. Our team works throughout the Highland Lakes and Central Texas Hill Country, including communities such as Lago Vista, Jonestown, Point Venture, Marble Falls, Horseshoe Bay, Granite Shoals, Kingsland, Cottonwood Shores, Spicewood, Sunrise Beach Village, and Liberty Hill.
We also serve homeowners throughout the greater Austin area, including Austin, Lakeway, Bee Cave, Cedar Park, Leander, Round Rock, and Georgetown.
Whether you are trying to identify an unfamiliar septic system, dealing with a recurring sewer backup, maintaining a grinder pump, or simply trying to understand how your home's plumbing works, local experience matters.
The Bottom Line
If you are unsure whether your home has septic or sewer, start with your utility bill, property records, yard, and existing plumbing equipment. If those clues do not give you a clear answer, have a qualified professional evaluate the system instead of guessing.
And if you live in the Highland Lakes, remember that wastewater systems can be different from one property to the next. A home may have septic, traditional sewer, or sewer with a grinder pump. Understanding which system you have is the first step toward maintaining it properly and avoiding an unpleasant surprise.
When you need help with plumbing, sewer and drains, AC, heating, or electrical systems in Lago Vista and the surrounding Highland Lakes communities, Leave It To Lantz.
Frequently Asked Questions
How can I tell if my house has septic or sewer?
Start by checking your utility bill for wastewater charges, reviewing your property records, and looking for septic tank access points or drainfield indicators in your yard. If you still cannot determine the system, a professional can inspect the property's plumbing and wastewater equipment.
Does having a sewer bill mean I do not have septic?
Usually, a sewer or wastewater charge indicates a connection to a centralized wastewater system, but billing structures vary. Check your utility records and property documentation to confirm how your home is served.
Where is a septic tank usually located?
A septic tank is commonly located along the path of the main wastewater line leaving the house, with the drainfield located beyond it. Exact locations vary by property. Your septic system's as-built drawing or a professional septic inspection can help locate it.
Can a home have sewer and a grinder pump?
Yes. Some homes use grinder pumps to move wastewater from the property into a sewer system when gravity alone is not sufficient. This configuration is found on some lake-area and hillside properties.
What is the difference between a septic tank and a sewer line?
A septic tank is part of an onsite wastewater treatment system located on your property. A sewer line transports wastewater away from your home to a centralized or community wastewater system.
Can a plumber tell me if I have septic or sewer?
A qualified plumber can often identify clues such as sewer cleanouts, pump equipment, and wastewater piping and help determine what system your home uses. Property records or a septic professional may also be needed for confirmation.
What are the signs of a failing septic system?
Common warning signs include sewage backups, multiple slow drains, gurgling plumbing, foul odors around the septic system, standing water, and unusually lush grass over the drainfield.
How often should a septic system be inspected?
The EPA recommends inspecting septic systems generally every one to three years and pumping the tank every three to five years, although the appropriate schedule depends on the system and household.
What should I do if my sewer line keeps backing up?
Do not keep treating recurring backups as isolated clogs. Multiple or repeated backups can indicate a larger sewer line problem. A professional sewer inspection or camera inspection can help identify the actual cause and determine the appropriate repair.
Does Lantz Home Services work on sewer and drain problems?
Yes. Lantz Home Services provides sewer and drain services along with plumbing, AC, heating, and electrical services throughout Lago Vista, Austin, and surrounding Central Texas communities.
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