- Absorption Fields
- At-Grade Design Manual (PDF)
- At-Grade Experimental On-Site Sewage Disposal Memo (PDF)
- At-Grade Memo (PDF)
- Gravelless Systems-ADS Biodiffusor chamber (PDF)
- Gravelless Systems-ADS Tube and Sock On-Site Sewage Disposal (PDF)
- Gravelless Systems-Approval of "Chamber Systems" (PDF)
- Gravelless Systems-Baughman Piope Technology (PDF)
- Gravelless Systems-Eljen Indrain approval 03-12-01
- Gravelless Systems-EZflow Drainfield (PDF)
- Gravelless Systems-Francesville Drain Tile GLP Gravelless Pipe (PDF)
- Gravelless Systems-Hancor Envirochamber (PDF)
- Gravelless Systems-Haviland LPS 56-s (PDF)
- Gravelless Systems-Infiltrator (PDF)
- Gravelless Systems-Infiltrator (PDF)
- Gravelless Systems-Infiltrator (PDF)
- Gravelless Systems-Infiltrator (PDF)
- Gravelless Systems-Infiltrator With Stone Backfill (PDF)
- Gravelless Systems-OS-05-02, 06-01-06 Chamber SAF Standards
- Gravelless Systems-OS-05-02, 06-02-13 Chamber Soil Absorption Field Standards (PDF)
- Gravelless Systems-Prinsco Memo (PDF)
- Gravelless Systems-Tube and Sock (PDF)
- Gravelless Systems-Tube and Sock Using Eight or Ten Inch Corrugated Tubing (PDF)
- Presby IN Manual 05-10-04 Approval Letter (final) (PDF)
- Presby IN Manual 05-10-07 Standard (final) (PDF)
- Tire Chips Guidance letter (PDF)
- Additional Information
- Communicable Diseases and Public Health (PDF)
- Diseases Involving Sewage (PDF)
- Earthquaker - ISDH Express (PDF)
- In Your Own Backyard - Septic Systems (PDF)
- Location of Lawn Irrigation Systems 02-09-05 (PDF)
- Onsite System Abandonment 02-06-12 (PDF)
- Outbuilding Policy 05-06-24 (PDF)
- Perimeter Drain Clearance-410 IAC 6-8.1-43d, memo to ISDH (PDF)
- Perimeter Drains-Are They a Part of a Residential OSS-93-01 (PDF)
- Public Health Aspects of OSDS 00-10-02 (PDF)
- Regulatory Aspects of On-Site Sewage Disposal 99-06 (PDF)
- Repair Replacement of Residential OSS in Floodplains (PDF)
- Residential Sewage Disposal-Amish Dwellings (PDF)
- Senate Enrolled Act 194-Residential OSS Risers (ISDH Memo) (PDF)
- Senate Enrolled Act 194-Residential OSS Risers (Plan Review) (PDF)
- System Design and Approval by LHD Staff 04-01-20 (PDF)
- Water Conservation (PDF)
- Water Tight! Brochure (PDF)
- Discharges
- EPA
- Soils
Recessional Moraine
- Residential and Commercial OSS and Recessional Moraines 1 (PDF)
- Residential and Commercial OSS and Recessional Moraines 2 (PDF)
- Residential and Commercial OSS and Recessional Moraines 3 (PDF)
- Residential and Commercial OSS and Recessional Moraines 4 (PDF)
- Residential and Commercial OSS and Recessional Moraines 5 (PDF)
- Residential and Commercial OSS and Recessional Moraines 6 (PDF)
- Residential and Commercial OSS and Recessional Moraines 7 (PDF)
- Residential and Commercial OSS and Recessional Moraines 8 (PDF)
- Residential and Commercial OSS and Recessional Moraines 9 (PDF)
- Residential and Commercial OSS and Recessional Moraines 10 (PDF)
- Residential and Commercial OSS and Recessional Moraines 11 (PDF)
- Residential and Commercial OSS and Recessional Moraines in Northeastern Indiana (PDF)
Soils General
- BC, CB, and C Horizons in Soils Developed from Wisconsin Glacial Till (PDF)
- Construction of Residential Onsite Sewage Systems During Wet Weather (PDF)
- Glossary-Soils for Residential On-Site Sewage Systems (PDF)
- On-Site Soils Evaluations (PDF)
- On-Site Soils Evaluations-Residential Sewage Disposal System (PDF)
- Ortstein and Ortstein-Like Characteristics (PDF)
- Residential On-Site Soils Evaluations (PDF)
- Soil Loading Rates for Pressure Compensating Subsurface Drip (PDF)
- The Evaluation of Mine Soil Sites and Their Use for On-Site (PDF)
- Wetlands Consultant List - Louisville (PDF)
- Standards
- System Components
- 3-Wall Pipe Approval Baughman Tile Company (PDF)
- Clarification on the use of ASTM F 810-85 pipe (PDF)
- Coal Ash Suitability for Aggregate (Spencer Co ltr) 98-03-11
- Distribution Box Specifications (PDF)
- Equalizer Insert for D-boxes 90-06-21
- Hole Positioning for Absorption Field Laterals (PDF)
- Pipe-List of Acceptable Pipe 05-09 (PDF)
- Pipe-New Specifications Memo (PDF)
- Pipe-Revised List of Acceptable Pipe Memo (PDF)
- Septic Tanks-List of Approved Effective 03-06 (PDF)
- Temporary Sewage Holding Tank Approvals (PDF)
- Miscellaneous