Developing Alternative Recreational Criteria for Waters Contaminated by Predominantly Non-Human Fecal Sources: EPA Publication

On July 31, EPA posted an updated revised version of Technical Support Materials: Developing Alternative Recreational Criteria for Waters Contaminated by Predominantly Non-Human Fecal Sources. The document describes a quantitative microbial risk assessment-based approach to develop recreational criteria for waters predominantly affected by non-human fecal contamination. It explains the scientific basis for alternative criteria, the technical steps users should follow, and how risk assessors can perform the analyses needed to develop alternative water quality criteria.