Septic Systems Companies

Texas law requires aerobic treatment units (ATUs) for new construction in many Hill Country areas. Aerobic systems use electric aerators to accelerate bacterial breakdown, producing cleaner effluent that is typically dispersed through sprinkler heads. Conventional septic systems use gravity and soil absorption without mechanical components.

Aerobic systems require:

• Quarterly inspections by an authorized service provider
• Annual pumping of the tank
• Aerator pump replacement every 5-8 years (approximately $800-$1,500)
• Full system replacement every 15-25 years (approximately $10,000-$20,000)

Limestone terrain can add $2,000-$5,000 to drain-field costs because the rock may require specialized installation techniques.

When evaluating a property with septic:

• Standing water near the drain field or septic tank
• Sewage odors inside or outside the home
• Slow drains or frequent backups
• Lush, green grass over the drain field (may indicate effluent surfacing)
• Age of the system — systems over 15 years old may need major components replaced
• Missing or expired maintenance records — lenders may require proof of maintenance

Most lenders require a functional septic system at closing. This typically means:

• The system must be operating properly
• No evidence of failure or surfacing effluent
• Current maintenance records from an authorized service provider
• For FHA/VA loans: additional property-condition standards may apply

If the septic system fails during the option period, the buyer can typically terminate the contract. If it fails after closing, the repair cost falls on the buyer. This is why a septic inspection during the option period is essential.