Septic Systems in Doña Ana County, NM

Regulations, costs, soil data & local providers

Pop. 219,561 ~13.5% on septic ~11,856 septic homes

Septic pumping in Doña Ana County, New Mexico costs $300-$650 (avg $450). A new septic system installation costs $6,500-$13,000. Approximately 11,856 homes in this county use septic systems.

Septic System Costs in Doña Ana County

ServiceLowAverageHigh
Pumping / Cleaning$300$450$650
Routine Inspection$250$350$500
Real Estate Inspection$450$650$900
Minor Repair$800$1,150$5,650
Conventional Installation$6,500$9,300$13,000
Aerobic System Installation$12,200$17,400$24,350
Drainfield Replacement$6,500$9,300$13,000
Perc Test$1,000$1,400$1,950

Cost estimates based on regional market data for Doña Ana County, New Mexico. Actual costs depend on system type, site conditions, and provider.

Groundwater & Water Table in Doña Ana County

Monitoring Wells
243
Avg Depth to Water
45.7 ft
Median Depth
19.1 ft
Shallowest Recorded
3.4 ft Shallow Risk

Water table depths in this county are generally favorable for conventional septic systems.

Source: USGS National Water Information System. Based on 4091 measurements from monitoring wells.

Septic Regulations & Permits in Doña Ana County

State Regulatory Body
New Mexico Department of Health/Environment
Inspection Required for Home Sale
No / Varies
Nitrogen Reduction Areas
No
Advanced Treatment Required
No

Contact county health department for specific requirements.

Contact the Doña Ana County health department for current permit requirements, fees, and approved system types.

Septic System FAQ for Doña Ana County

How much does septic pumping cost in Doña Ana County?
Septic pumping in Doña Ana County, New Mexico typically costs between $300 and $650, with an average of $450. Costs vary by tank size (1,000-1,500 gallons is typical), ease of access, distance from the pumping company, and how full the tank is. Most homeowners should pump their tank every 3-5 years.
How much does a new septic system cost in Doña Ana County?
A conventional septic system installation in Doña Ana County typically costs $6,500-$13,000. An aerobic treatment unit (ATU) costs $12,200-$24,350. Costs include the tank, drainfield, permits, and labor.
Do I need a permit for a septic system in Doña Ana County?
Yes. Virtually all counties in New Mexico require a permit before installing, repairing, or replacing a septic system. The permit process typically involves a soil evaluation or percolation test, system design by a licensed professional, application to the county health department, and one or more inspections during installation. Contact the Doña Ana County health department for current requirements and fees.
What soil types are in Doña Ana County and how do they affect septic systems?
Contact the county health department for soil evaluation requirements.
How often should I pump my septic tank in Doña Ana County?
The EPA recommends pumping your septic tank every 3-5 years for a typical household. The exact frequency depends on tank size, household size, and water usage. A 1,000-gallon tank serving a family of 4 should generally be pumped every 3 years. With approximately 11,856 septic systems in Doña Ana County, there are many local providers offering regular pumping services.
How long does a septic system last in Doña Ana County?
A well-maintained septic system in Doña Ana County typically lasts 25-30 years, though some components may need attention sooner. The concrete septic tank itself can last 40+ years, while the drainfield — the most critical and expensive component — usually lasts 15-25 years depending on soil conditions. Regular pumping every 3-5 years and avoiding excess water usage are the two most effective ways to extend system life.

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Quick Facts

Population219,561
Est. Septic Homes11,856
Avg Pumping Cost$450

Common Septic Services

Pumping: $300-$650
Inspection: $250-$500
Repair: $800-$5,650
Installation: $6,500-$13,000

Data last updated: 2026-04-13