Septic Installation & Replacement FAQ

A new installation is for a lot with no existing system — typically new construction. A replacement addresses a failing tank, drainfield, or full system on a property that already has one. Both require a current permit.

Sandia Septic Solutions is a local connection service — we route your request to a licensed, permitted septic professional serving your specific area, rather than operating as an installation crew ourselves.

A well-designed, properly maintained conventional system can last several decades. Lifespan depends heavily on whether the system was correctly sized for the home, soil conditions, and how consistently it's pumped and maintained.

It depends on your exact location: incorporated Albuquerque, Los Ranchos, and Tijeras go through NMED; unincorporated Bernalillo County (much of the East Mountains and South Valley) goes through the county's own wastewater ordinance; Sandoval and Valencia County properties go through NMED's local field office process. See the full permit process guide.

New Mexico allows a qualified homeowner to install a conventional system on their own primary residence after passing a state exam, but the permit and inspection requirements are the same as for a licensed contractor.

One of four New Mexico contractor license classifications: MM-1, MM-98, MS-1, or MS-3, issued by the Construction Industries Division.

Conventional systems typically run $4,000–$12,000+ depending on soil and site conditions; alternative systems run higher. See the full cost guide for a detailed breakdown.

From initial site evaluation through final inspection, plan for several weeks at minimum, depending on permit review times and weather. New construction projects should build this into their overall timeline early.

Because soil conditions vary so much across the metro — a lot with caliche a foot down can cost significantly more to excavate than one without — an accurate quote requires a site evaluation first.

Caliche is a hardened, cemented soil layer common across much of this region's mesas and foothills. It drains poorly and can be difficult and costly to excavate through, which is why it's the single biggest local cost and design variable.

Your percolation test and site evaluation will determine this. Shallow soil to bedrock, small lots, and high groundwater are common reasons a conventional drainfield won't work. See Aerobic Treatment Systems for details.

Yes — setback distances between wells and septic components are a core part of permitting review, especially in well-and-septic communities like the East Mountains, Placitas, and Corrales.