Septic Systems in Sunset Canyon: What Buyers Need to Know

Every home in Sunset Canyon is on a private on-site sewage facility (OSSF) — septic, in plain English. There is no municipal sewer. Hays County permits and inspects these systems.

Two system types you'll see

• Conventional gravity / drain-field — older homes on the larger, flatter lots. Lower maintenance, longer life if respected.
• Aerobic spray — common on newer builds and lots with poor percolation. Requires a service contract (~$300/yr) and chlorine tablets.

What to budget

• Pre-purchase septic inspection: $350–$550.
• Pump-out every 3–5 years: $400–$600.
• Full aerobic replacement (worst case): $12,000–$18,000.

The two failure modes

Drain-field saturation from years of overuse or planting trees over the field — expensive to remediate. Spray-head and pump failure on aerobic systems — cheap parts, but the alarm beeps until you fix it. Get the inspection. Always.