Conventional vs. Alternative Septic Systems: Which One Do You Have and What Does That Mean for You?

Your septic system is doing a lot of work underground, and knowing what type you have puts you ahead of most maintenance problems before they start. If you’re in southern Arizona, routine septic pumping in Green Valley, AZ is part of keeping either system type running the way it should.

Two Systems, Two Very Different Approaches

Conventional septic systems use a simple two-part setup: a septic tank and a drain field. Wastewater flows from the tank into the soil, which naturally filters it. These systems are common in homes with adequate lot size and suitable soil conditions.

Alternative systems exist because not every property can support a conventional design. Rocky terrain, high water tables, or poor soil absorption rates make standard drain fields impractical. Alternative systems compensate with added treatment steps or different distribution methods.

What Falls Under “Alternative”?

The term covers several designs, each built for specific site conditions:

• Mound systems raise the drain field above ground to create distance from groundwater
• Aerobic treatment units (ATUs) inject oxygen into wastewater to speed up bacterial breakdown
• Drip irrigation systems distribute treated effluent through a network of shallow tubing
• Pressure distribution systems pump effluent evenly across the drain field rather than letting it flow by gravity

According to the U.S. Environmental Protection Agency, alternative systems are increasingly common in areas where conventional systems aren’t viable due to site limitations.

Maintenance Differences That Actually Matter

This is where the two systems diverge most. Conventional systems are relatively low-maintenance. Routine septic service typically means inspections every one to three years and pumping every three to five years, depending on household size.

Alternative systems, particularly ATUs, often require service contracts because of their mechanical components. Aerators, pumps, and timers need regular inspection. Some states and counties require permitted service providers to inspect these systems annually. In Arizona, homeowners with alternative systems should confirm local compliance requirements with their county.

Signs Your System Needs Attention

Regardless of system type, some warning signs apply across the board. If you notice any of the following, it’s time to call a professional:

• Slow drains throughout the home
• Gurgling sounds in pipes or toilets
• Wet or unusually green patches near the drain field
• Sewage odors inside or outside the home
• Sewage backups

Septic system pumping is not something to delay once these signs appear.

FAQ

Can I switch from an alternative system to a conventional one?

Sometimes, but it depends on your soil and lot size. A licensed professional would need to assess your property first.

How do I find out what system I have?

Your county health department typically has records on file. Your original home inspection report may also include this information.

Work With a Team That Knows Arizona Systems

Arizona Sewer Solution has spent 20 years servicing both conventional and alternative septic systems across southern Arizona. We’re locally owned, licensed, bonded, and insured, with Google 5-Star ratings and a workmanship guarantee behind every job. We offer free estimates, 24/7 availability, and emergency service when you need it fast. Financing is available through Acorn Financing and Housecall Financing. 

Call us today and get the right service for the system you have.