Building a home or replacing a system that has reached the end of its life means a properly designed and permitted septic install. Here is what a new septic system costs in the Roswell area, why the perc test matters, and how the process works in Chaves County's rocky high-desert soils.
A new septic system in the Roswell area typically runs about $5,000 to $15,000 or more, once you include the tank, the drain field, excavation, and permitting. What moves the number:
Because the perc test and soil dictate the design, a firm quote comes after the site is evaluated. Request a quote and tell us whether it is a new build or a replacement.
A percolation (perc) test measures how quickly your soil absorbs water and is required to design and permit any septic system. In the arid, rocky, and often caliche-heavy soils around Roswell, perc results largely decide the size and type of drain field you need — slow-draining ground calls for a larger field or an advanced system, while better-draining ground allows a conventional design. Skipping or shortcutting the perc test leads to systems that fail early.
After the perc test and county permit, a typical residential install takes a few days: excavation, setting the septic tank, building the drain field to the approved design, connecting the line from the house, backfilling, and a final inspection. A well-designed system paired with routine maintenance and on-schedule pumping can last decades. Ask about tank size, field type, and warranty before you hire.
About $5,000 to $15,000 or more, driven by tank size, drain field design, and perc test results.
Yes — it is required to design and permit the system and determines your drain field.
A few days of site work once the perc test and permit are in hand; permitting adds lead time.
Usually sized to the number of bedrooms and water use; we confirm during design.
Visit the full FAQ page for more.
Drain field design, repair, and replacement.
Inspect a system before buying or building.
Keep a new system healthy for decades.
You can also review tank pumping, tank & line repair, and the areas we serve.