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Home > Title 30 > Part 1 > Chapter 285 >Subchapter I > Rule 285.91
TITLE 30 - ENVIRONMENTAL QUALITY
PART 1 - TEXAS COMMISSION ON ENVIRONMENTAL QUALITY
CHAPTER 285 - ON-SITE SEWAGE FACILITIES
SUBCHAPTER I - APPENDICES
SECTION/RULE §285.91 - Tables
Chapter Review Date 04/01/2024

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.Attached Graphic(2) Table II. Septic Tank and Aerobic Treatment Unit Sizing.Attached Graphic(3) Table III. Wastewater Usage Rate.Attached Graphic(4) Table IV. Required Testing and Reporting.Attached Graphic(5) Table V. Criteria for Standard Subsurface Absorption Systems.Attached Graphic(6) Table VI. USDA Soil Textural Classifications.Attached Graphic(7) Table VII. Yearly Average Net Evaporation (Evaporation-Rainfall). Attached Graphic(8) Table VIII. OSSF Excavation Length (3 Feet in Width or Less).Attached Graphic(9) Table IX. OSSF System Designation.Attached Graphic(10) Table X. Minimum Required Separation Distances for On-Site Sewage Facilities.Attached Graphic(11) Table XI. Intermittent Sand Filter Media Specifications (ASTM C-33).Attached Graphic(12) Table XII. OSSF Maintenance Contracts, Affidavit, and Testing/Reporting Requirements.Attached Graphic(13) Table XIII. Disposal and Treatment Selection Criteria. Attached Graphic

Source Note: The provisions of this §285.91 adopted to be effective February 5, 1997, 22 TexReg 1114; amended to be effective June 13, 2001, 26 TexReg 4115; amended to be effective December 17, 2001, 26 TexReg 10363; amended to be effective September 11, 2008, 33 TexReg 7536; amended to be effective December 27, 2012, 37 TexReg 9947; amended to be effective July 6, 2023, 48 TexReg 3508.

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