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System Design/Engineering

Recommended Guidance for the Design of Wastewater Drip Dispersal Systems

NOWRA Standard of Practice: Decentralized Wastewater Treatment -- Soil-Based Treatment System “Selection and Design”

A Homeowner's Onsite System Guide and Record Keeping Folder 

Order copies for 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
When Is a Septic System Regulated as a Class V Well? (PDF
EPA Region 1 Innovative Technology Inventory

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) -

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