Wastewater Technology

NOWRA’s Technology Resources provide a comprehensive overview of innovative solutions shaping the onsite and decentralized wastewater industry. This collection highlights key tools, guidance documents, and reference materials that support the design, evaluation, and implementation of advanced wastewater treatment approaches. From emerging treatment processes to established technologies used to improve performance and protect water quality, these resources help professionals understand and apply effective solutions across a wide range of site conditions and regulatory requirements.

US Environmental Protection Agency (EPA)

Advanced Onsite Technology Products Approved by State - This provides a web-based list of links to state-by-state information regarding the advanced technology products approved for use, the product approval process, and the states’ departments which oversee the use of advanced treatment systems for decentralized wastewater management.

EPA Region 1 Innovative Technology Inventory

Industrial Wastewater Treatment Technology Database

Technology Fact Sheets:

• Aerobic Treatment (PDF)
• Evapotransportation (PDF)
• Low Pressure Pipe Systems (PDF)
• Mound Systems (PDF)
• Septage Treatment/Disposal (PDF)
• Septic System Tanks (PDF)
• Septic Tank Effluent Screens (PDF)
• Septic Tank Leaching Chamber (PDF)
• Septic Tank Systems for Large Flow Application (PDF)
• Septic Tank-Soil Absorption Systems (PDF)
• Small Diameter Gravity Sewer (PDF)
• 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 (PDF)
• High-Efficiency Toilets (PDF)
• Intermittent Sand Filters (PDF)
• Ozone Disinfection (PDF)
• Package Plants (PDF)
• Sewers, Pressure (PDF)
• Ultraviolet Disinfection (PDF)
• Wetlands: Subsurface Flow (PDF)

Water Efficiency Technology Fact Sheets:

• Composting Toilets (PDF)
• Incinerating Toilets (PDF)
• Oil Recirculating Toilets (PDF)

NOWRA is a leading resource for professionals working in onsite and decentralized wastewater systems, providing education, technical guidance, and industry support. Our mission is to advance the understanding and effective use of wastewater treatment technologies that protect public health and safeguard water resources. Through training programs, technical resources, and collaboration across the industry, NOWRA helps ensure that these systems are designed, installed, and managed with a high standard of performance and environmental responsibility.