For how long should a pool be closed in the event of solid fecal contamination?

In the event of solid fecal contamination in a pool, it is crucial to ensure proper disinfection and safety for all swimmers. The recommended closure time is typically 30 minutes. During this period, the pool operators should take necessary actions to address the contamination, which includes turning off the pool's circulation system and increasing the chlorine levels for disinfection.

The 30-minute closure allows adequate time for chlorine to act on pathogens that may be present in the fecal matter, significantly reducing the risk of illness. After this time, the pool can usually be reopened, provided that the appropriate cleaning and disinfection protocols have been followed.

Longer closure times, such as 1 hour or 2 hours, are generally not necessary for solid fecal matter, as 30 minutes is considered sufficient when performed in conjunction with proper cleaning procedures.