Texas Administrative Code
Title 30 - ENVIRONMENTAL QUALITY
Part 1 - TEXAS COMMISSION ON ENVIRONMENTAL QUALITY
Chapter 285 - ON-SITE SEWAGE FACILITIES
Subchapter I - APPENDICES
Section 285.91 - Tables
Current through Reg. 50, No. 13; March 28, 2025
The following tables are necessary for the proper location, planning, construction, and installation of an on-site sewage facility (OSSF).
(1) Table I. Effluent Loading Requirements Based on Soil Classification.
(2) Table II. Septic Tank and Aerobic Treatment Unit Sizing.
(3) Table III. Wastewater Usage Rate.
(4) Table IV. Required Testing and Reporting.
(5) Table V. Criteria for Standard Subsurface Absorption Systems.
(6) Table VI. USDA Soil Textural Classifications.
(7) Table VII. Yearly Average Net Evaporation (Evaporation-Rainfall).
(8) Table VIII. OSSF Excavation Length (3 Feet in Width or Less).
(9) Table IX. OSSF System Designation.
(10) Table X. Minimum Required Separation Distances for On-Site Sewage Facilities.
(11) Table XI. Intermittent Sand Filter Media Specifications (ASTM C-33).
(12) Table XII. OSSF Maintenance Contracts, Affidavit, and Testing/Reporting Requirements.
(13) Table XIII. Disposal and Treatment Selection Criteria.
