Knowledge Area: Decentralized Systems

Our Objective

WERF will improve the capacity of public and private agencies to respond to the increasing complexities of, and expanding need for, decentralized wastewater and stormwater systems, as part of an integrated water management approach. WERF will achieve this primarily through support of research and development projects that help communities, engineers, regulators, and others address critical knowledge and information gaps in decentralized systems.

Latest News

Governance for Decentralized Sanitation: Global Practice Scan
The purpose of this Global Practice Scan, from developed and developing countries, is to review, bring together, and synthesize insights on how others have approached governance of decentralized systems with respect to operational responsibilities and institutional arrangements.
The SSSA Onsite Wastewater Conference - April 7-8, 2014
The SSSA Onsite Wastewater Research Symposium will be held on April 7-8, 2014 in Albuquerque, NM. Please refer to the above link for registration details.
EPA Decentralized MOU - February 19, 2014 Webinar
The EPA Decentralized MOU’s first webinar of the year will be on February 19 at 1:00 p.m. ET. Tom Bruursema of NSF will be presenting on: “The Role of Certification in Onsite Wastewater Technology Approvals.”
EPA DECENTRALIZED MOU - new webcast page
EPA's Decentralized Wastewater Management MOU Partnership sponsors quarterly webcasts to discuss issues of interest to the decentralized community. Below are transcripts, speaker lists, and presentations from each of the webcasts. There are a number of EPA seminars available through this link that would be of interest to the decentralized community.
EPA Launches “SepticSmart” to Prevent Costly Septic System Problems, Protect Environment
Today, the U.S. Environmental Protection Agency (EPA) launched “SepticSmart,” a new program encouraging homeowners to take steps to maintain their home septic systems, preventing costly repairs, inconvenience and pollution to local waterways, which poses risks to public health and the environment.

Products & Tools

Report Reviews Quantitative Tools to Determine Wastewater Soil Treatment Unit Performance
The research (DEC1R06) summarizes available literature on best practices and tools for soil treatment unit (STU) design and performance. It describes STU performance based on data and information from the literature and discusses available modeling tools for constituent modeling.
Report Helps Aid in the Design and Management of Onsite Wastewater Systems
This research (No. 04DEC1) characterizes the composition of modern single residential source onsite raw wastewater and primary treated effluent to aid in the design and management of onsite wastewater systems.
Guidance Now Available for Establishing Successful Responsible Management Entities
New resources provide guidance for successfully establishing and running organizations that manage decentralized wastewater systems -- Responsible Management Entities.
Report Provides Guidance on Modeling Onsite Wastewater Systems
A WERF report gives planners and regulators guidance in developing and using models to evaluate watershed-scale water quality scenarios associated with decentralized or onsite wastewater systems. It includes resources for each step of the planning process, and explains modeling philosophy, model selection, model sensitivity analysis and calibration and other concepts.
Decentralized Stormwater Controls for Urban Retrofit and CSO Reduction (Phase 2)
Learn more about the planning necessary to integrate decentralized stormwater controls for combined sewer overflow management.