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Water: Biosolids

Pathogen Equivalency Committee (PEC)

Salmonella spp. colonies producing a bright blue halo on MSRV (Modified Semisolid Rappaport-Vassiliadis) media. Biosolids Research ¦ Pathogen Research ¦ Pathogen Equivalendy Committee
This website provides guidance for demonstrating the effectiveness of innovative and/or alternative sewage sludge disinfection processes for the purposes of receiving a recommendation of equivalency to a process that significantly or further reduces pathogens. Biosolids are sewage sludges that have been treated and managed to meet state and federal standards. 40 CFR Part 503 regulates sewage sludge use and disposal.

Check with your permitting authority FIRST PEC does not review technologies that currently meet Part 503 alternatives (PDF) (1 pg, 16K, About PDF)
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Biosolids Guidance
Cover of Environmental Regulations and Technology: Control of Pathogens and Vector Attraction in Sewage Sludge
Control of Pathogens and Vector Attraction in Sewage Sludge (EPA/625/R-92/013)

A new process to significantly or further reduce pathogens can only be granted equivalency by the permitting authority. The Pathogen Equivalency Committee (PEC) advises permitting authorities on equivalency recommendations.

Helpful Information

What are Processes to Further Reduce Pathogens (PFRPs) and Processes to Significantly Reduce Pathogens (PSRPs)?

What are the criteria for demonstrating equivalency to a PFRP or PSRP?

How do I get started?

How do I apply?

Why do fecal coliform, Salmonella spp., enteric viruses, and helminth ova demonstrate equivalency?

Design, elements, and resources for quality assurance project plan development

Examples of equivalent processes to significantly or further reduce pathogens

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