San Antonio Septic Services: Aerobic, Pumping & Edwards Aquifer (2026)

San Antonio septic services operate under some of the strictest on-site wastewater rules in Texas. Bexar, Comal, and Medina counties all sit within Edwards Aquifer Authority jurisdiction, where even a single septic failure can contaminate the drinking water supply for 2 million people downstream. That regulatory weight shapes every install, inspection, and pump-out in the region.

Here is what Bexar county septic permits actually require, why nearly every new san antonio aerobic install uses drip irrigation, and what edwards aquifer septic rules mean for your contractor's scope of work.

Why Edwards Aquifer Rules Matter

The Edwards Aquifer recharge and contributing zones run across southern Bexar, most of Comal, and Medina counties. In those zones, EAA review is mandatory for any new OSSF install — in addition to standard TCEQ Chapter 285 requirements. Reviews focus on setbacks from recharge features, casing and sanitary seal requirements, and effluent disposal method.

Result: almost all new residential systems in Bexar and Comal counties are aerobic with drip irrigation. Surface spray is limited in the recharge zone; conventional drain fields are essentially prohibited.

Bexar County Septic Permit Process

Bexar County Department of Environmental Services is a TCEQ Authorized Agent. Your permit flows through the county, not the state regional office, but EAA review runs in parallel on any recharge/contributing zone property. Budget 4–8 weeks total for permit review.

For the full Texas permit overview, see our Texas septic permit guide.

San Antonio Septic Costs

Service	San Antonio Range
Pumping (1,000 gal)	$325–$475
Aerobic maintenance visit	$75–$150
Aerobic + drip irrigation install	$13,000–$25,000
EAA zone engineered install	$18,000–$35,000
Real estate inspection	$400–$650

For state-wide pricing, see our Texas septic pumping cost guide.

What to Look For in a San Antonio Contractor

• Current TCEQ Installer II license
• EAA submittal experience — ask how many recharge-zone projects they've completed
• Active Maintenance Provider registration for aerobic service
• Written two-year maintenance contract included in the install quote

Frequently Asked Questions

Is a conventional septic allowed in Bexar County?

Rarely, and only outside the Edwards recharge zone on suitable soil. Most properties end up on aerobic treatment.

How much does EAA review add to my permit?

Typically 2–4 weeks of additional review and $200–$500 in fees, depending on the property.

Do I need a Maintenance Provider contract forever on an aerobic system?

The state requires the first two years under a licensed MP contract. After that, you can renew or become an owner-operator if you qualify — most homeowners simply renew.

Find a San Antonio Septic Contractor

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