An educational, cited reference for homeowners — not a claim that ClickSeptic services New Mexico today. ClickSeptic has zero live markets anywhere yet.
Short answer: Onsite liquid waste (septic) systems in New Mexico are regulated statewide by the New Mexico Environment Department (NMED), Liquid Waste Program, under regulations codified at 20.7.3 NMAC (Liquid Waste Disposal and Treatment) and fee provisions at 20.7.11 NMAC, adopted under statutory authority granted by the Environmental Improvement Act (NMSA 74-1). NMED directly issues permits and evaluations statewide rather than delegating primary authority to county health departments, covering onsite systems with design flows of 5,000 gallons per day or less.
Last updated: September 2026. This page summarizes public New Mexico regulatory information for homeowner reference and is not legal advice — always confirm current requirements directly with the state or local agency cited below. ClickSeptic has not launched in any market and has zero operators onboarded anywhere today; this page does not claim ClickSeptic provides service in New Mexico or anywhere else.
Onsite liquid waste (septic) systems in New Mexico are regulated statewide by the New Mexico Environment Department (NMED), Liquid Waste Program, under regulations codified at 20.7.3 NMAC (Liquid Waste Disposal and Treatment) and fee provisions at 20.7.11 NMAC, adopted under statutory authority granted by the Environmental Improvement Act (NMSA 74-1). NMED directly issues permits and evaluations statewide rather than delegating primary authority to county health departments, covering onsite systems with design flows of 5,000 gallons per day or less.
New Mexico has an explicit statewide property-transfer evaluation requirement: 20.7.3.902(E) NMAC requires that, prior to the transfer of a property served by an established onsite liquid waste system, the transferor (seller) must have the system evaluated by a NMED-qualified evaluator using a department-approved form. NMED's own program page confirms this and adds procedural detail: the evaluator searches NMED permit records, a $50 filing fee applies, the evaluation report must be submitted to NMED within 15 days, and a prior evaluation or a final system inspection completed within the preceding 180 days can satisfy the requirement without a new evaluation. Advanced treatment systems and systems that were never permitted have additional or modified evaluation steps under the same rule. This makes New Mexico one of the more prescriptive states in this survey regarding point-of-sale septic evaluation.
No provision within 20.7.3 NMAC establishing a fixed statewide numeric pump-out interval (e.g., a flat 'every X years' rule) for septic tanks was identified; the regulation's transfer-triggered evaluation under 20.7.3.902(E) functions as New Mexico's primary mechanism for periodically checking on a system's condition (at ownership-transfer points) rather than through a standalone calendar-based pumping mandate. Homeowners are otherwise expected to pump as needed based on tank condition, consistent with general industry practice.
A permit from NMED is required before installing, modifying, or operating any onsite liquid waste system under 20.7.3.401 NMAC, general requirements. The Liquid Waste Permitting Process (as described on NMED's program page) involves site application, review of soil/site suitability, design approval against 20.7.3 NMAC construction standards, and inspection before final approval, with fee schedules set under 20.7.11 NMAC (current fees effective from a 2020 update). NMED maintains an online Wastewater Treatment System Permit Finder tool allowing the public to search permit records for registered septic systems statewide, which is also the tool property-transfer evaluators use to verify a system's permit history as part of the 20.7.3.902(E) evaluation process.
New Mexico's 20.7.3.902(E) NMAC property-transfer evaluation requirement -- with its specific $50 filing fee, 15-day report-submission deadline, and 180-day carryover exemption for a recent prior evaluation -- is one of the most detailed, codified point-of-sale septic inspection regimes among all eight states surveyed here, standing in sharp contrast to states like Kentucky, Mississippi, or Montana that have no such requirement at all.
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