[Nature-like swimming ponds and bathing: public health issues for congruous guidelines].

: Nature-like swimming ponds represent an emerging approach to recreational waters. The substitution of traditional disinfection with biodepuration enhances environmental sustainability, but implies relevant public health issues. No European regulations are available while several countries delivered local guidelines. Appropriate microbiological analysis, user education, and correct water management based on HACCP approach, represent key points for the development of future guidelines.