Not every septic system in this part of Texas works the same way. Drive around Wise or Parker County and you’ll pass properties with sprinkler heads running on a timer that aren’t irrigating anything — those are aerobic systems doing their job.
If you’re not sure which type you own, it’s worth finding out. The maintenance obligations are genuinely different.
Conventional systems
The traditional setup: a tank and a drainfield, working on gravity and biology with no moving parts.
Wastewater enters the tank, solids settle, grease floats, and the liquid in between flows out to a network of perforated pipes in gravel trenches. Soil finishes the treatment as the liquid filters down.
The bacteria doing the work in the tank are anaerobic — they operate without oxygen. It’s a slower process, which is why the tank needs to hold water as long as it does.
Simple, durable, and cheap to run. The catch is that it needs suitable soil that actually absorbs, and enough land for a proper field.
Aerobic systems
An aerobic treatment unit adds oxygen to the process, usually with an air pump that runs continuously. Oxygen-loving bacteria work considerably faster and produce a cleaner effluent than an anaerobic tank does.
Because that effluent is treated to a higher standard, it’s frequently dispersed through surface spray irrigation rather than buried trenches — hence the sprinklers. Many aerobic systems also include a disinfection step before that dispersal.
These systems get installed where a conventional drainfield won’t work: heavy clay that drains poorly, small lots, high water tables, or ground too rocky for trenches. A fair number of newer rural builds around here fall into that category.
How to tell which one you have
- Sprinkler heads that run on their own schedule and aren’t tied to your irrigation system — that’s aerobic spray dispersal
- An electrical box, control panel, or alarm near the system. Conventional systems have no electrical components at all
- A humming sound from an air pump
- Multiple lids or compartments rather than a single tank access
- A maintenance contract in your paperwork — a strong tell
- Your county permit records, which identify the system type directly
If you’ve got an electrical connection and sprinklers, it’s aerobic. If it’s a buried tank and a grassy field with nothing powered, it’s conventional.
The maintenance difference
This is the part that matters most, and it’s where aerobic owners sometimes get caught out.
Aerobic systems have mechanical components — pumps, aerators, alarms, spray heads — that wear and need servicing. In Texas, residential aerobic systems generally carry ongoing maintenance requirements and are serviced under contract by licensed maintenance providers, with inspections on a set schedule.
Requirements vary by county and by system, so confirm the specifics with your county’s on-site sewage permitting office rather than assuming. If you bought a property with an aerobic system and never saw a maintenance contract, that’s worth a phone call this week.
Both types still accumulate solids
Here’s what doesn’t change: both system types have a tank where solids collect, and both need that material physically removed on some interval.
An aerobic system isn’t exempt from pumping. Its treatment process is more efficient, but non-degradable solids still settle out and still have to come out. Neglecting that sends solids into equipment that’s far more expensive to replace than a conventional drainfield — pumps and spray heads don’t appreciate being fed sludge.
What to do with this
- Identify which system type you have, using the tells above or your county permit record
- If it’s aerobic, confirm your maintenance contract is active and current
- Either way, find out when the tank was last pumped and get it on a schedule
- Know where everything is — tank, field or spray area, control panel
When you call to book, tell us what kind of system you’re working with, or describe what you see out there. If you’re not sure, say so — that’s a common answer and we can sort it out.
Talk to Discount Septic
Not sure what’s buried in your yard? Call us and describe what you’ve got — we’ll help you figure out where you stand.
Call (817) 584-7228 for a free estimate, or send us a message. We pump septic tanks across Wise, Parker, Tarrant, and Denton County, Texas — in town or out on the land. You can also read more about how our pumping service works.