Septic System Types
Conventional, aerobic, drip, mound, LPD and ET — what each system is and what decides which one your property can support.
State rules are the floor. Figures here are TCEQ minimums under 30 TAC Chapter 285. Your county can be stricter and around here most are — check your county before you rely on a number.
- Aerobic vs. conventional anaerobic — what decides which one my property needs?
- What system types are allowed in Texas, and when is each used?
- How is system size determined — bedrooms, square footage, or occupancy?
- How soil class (Class I–IV, clay, rock, caliche) drives allowable system type and drainfield sizing.
4 questions. Reviewed August 2026.