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The links below are compiled from a variety of authoritative sources. The blue name indicates the source of the links and content below it.

A Homeowner's Onsite System Guide and Record Keeping Folder 

Order copiesfor the homeowners you work with

EPA Decentralized Wastewater Home Page

Onsite Wastewater Treatment and Disposal Systems Manual (PDF) - This manual provides supplemental and new information for wastewater treatment professionals in the public and private sectors, expanding upon the design manual listed below.
Design Manual: Onsite Wastewater Treatment and Disposal Systems (PDF) - This design manual provides technical information for those involved in the design, construction, operation, maintenance and regulation of onsite wastewater treatment and disposal systems. It does not contain standards for those systems, nor does it contain pertinent rules or regulations
Source Water Protection Practices Bulletin: Managing Septic Systems to Prevent Contamination of Drinking Water (PDF) 

Technology Fact Sheets
       Aerobic Treatment
       Low Pressure Pipe Systems
       Mound Systems
       Septage Treatment/Disposal
       Septic System Tanks (PDF)
       Septic Tank Effluent Screens (PDF)
       Septic Tank Leaching Chamber (PDF)
       Septic Tank Systems for Large Flow Application
       Septic Tank-Soil Absorption Systems
       Small Diameter Gravity Sewer
       Types of Filters (PDF)
       Control Panels (PDF)
       Recirculating Sand Filters (PDF)
       Septic Tank Polishing (PDF)

Wastewater Technology Fact Sheets:
       Disinfection for Small Systems (PDF)
       Free Water Surface Wetlands
       High-Efficiency Toilets (PDF)
       Intermittent Sand Filters
       Ozone Disinfection
       Package Plants (PDF)
       Sewers, Pressure (PDF)
       Ultraviolet Disinfection
       Wetlands: Subsurface Flow

Water Efficiency Technology Fact Sheets:
       Composting Toilets
       Incinerating Toilets (PDF)
       Oil Recirculating Toilets (PDF) -

logo_bannerSeptic Smart Homeowner Education Program 

Septic Smart Outreach Toolkit for Industry Professionals

Basic Water and Wastewater Formulas

These Installation and Start-up Checklists serve as the foundation for the CIDWT National Installer Curriculum materials. The checklists were developed in conjunction with industry stakeholders and provide details on proper installation techniques and steps for commonly used technologies.  This information can be integrated into the professional installer’s business model as appropriate.  The checklists may be used for evaluating commercial or industrial systems; however, additional installation checklists may be needed for installation of systems other than those serving single-family residences. A startup checklist is included for many of the technologies. The activities on the startup checklist are necessary to verify the system was installed correctly and clear the system for operation. The startup checklists also document important parameters useful to the O&M service provider or for system troubleshooting and repair, if needed. The checklists do not however, detail activities related to the startup of biological processes, namely establishing microbial populations.
Form 1.1 Installation Checklist - System Evaluation
Form 3.1 Installation Checklist - Safety
Form 6.1 Installation Checklist - Planning
Form 8.1 Installation Checklist - Piping
Form 8.2 Installation Checklist - Tanks
Form 8.3 Startup Checklist - Tanks
Form 9.1 Installation Checklist - Demand and Timed Dosed Pumps and Siphons
Form 9.2 Startup Checklist - Demand and Timed Dosed Pumps and Siphons
Form 10.1 Installation Checklist - Media Filters
Form 10.2 Startup Checklist - Media Filters
Form 10.3 Installation Checklists - Aerobic Treatment Unit
Form 10.4 Startup Checklists - Aerobic Treatment Unit
Form 10.5 Installation Checklists - Constructed Wetlands

Form 10.6 Startup Checklists - Constructed Wetlands
Form 10.7 Installation Checklists - Lagoons
Form 10.8 Startup Checklists - Lagoons
Form 10.9 Installation Checklists - Disinfection (chlorine)
Form 10.10 Startup Checklists - Disinfection (chlorine)
Form 10.11 Installation Checklist - Disinfection (UV light)
Form 10.12 Startup Checklist - Disinfection (UV light)
Form 11.1 Installation Checklist - Soil Treatment Area
Form 11.2 Startup Checklist - Soil Treatment Area
Form 11.3 Installation Checklist - Evapotranspiration Bed
Form 11.4 Startup Checklist - Evapotranspiration Bed
Form 11.5 Installation Checklist - Drip Field
Form 11.6 Startup Checklist - Drip Field
Form 11.7 Installation Checklist - Spray Field
Form 11.8 Startup Checklist - Spray Field
Form 11.9 Installation Checklist - Outfalls
Form 11.10 Startup Checklist - Outfalls

Decentralized Wastewater Treatment Glossary Second Edition
Single column PDFwith diagrams (139 pages)
New!Two-column PDFwith diagrams (91 pages)

CIDWT. 2009. Installation of Wastewater Treatment Systems. Consortium of Institutes for Decentralized Wastewater Treatment. Iowa State University, Midwest Plan Service. Ames, IA
Installer Training Program Diagrams

CIDWT 2002. Training Center Signs. Retrieved on (DATE).
Training Center Signs

Lenning, D., T. Banathy, D. Gustafson, B.J. Lesikar, S. Wecker, D. Wright. 2005. Technology Overview Module. in (D.L. Lindbo and N.E. Deal eds.) Model Decentralized Wastewater Practitioner Curriculum. National Decentralized Water Resources Capacity Development Project. North Carolina State University, Raleigh, NC.
Graphics from the Practitioner Curriculum Technology Overview Module 

Workshop: Performance Effects of Water Softener Brine on Onsite Systems
Installer Training Program
Model Decentralized Wastewater Practitioner Curriculum

Changes in Septic Tank Effluent Due  to Water Softener Use (Report)