What standard must all public swimming pools meet according to IDPH?

The standard that all public swimming pools must meet according to IDPH focuses on regular water quality testing and maintenance. This requirement is crucial because it ensures that the water remains safe for swimmers by monitoring and controlling factors such as chemical levels, pathogens, and overall cleanliness. Proper water quality testing helps prevent waterborne illnesses and maintains a safe recreational environment. Regular maintenance practices further enhance the pool's safety by addressing any structural or operational issues that may arise.

While other options may contribute to a better swimming experience or enhance safety, they do not directly address the essential health standards regulated by the IDPH specifically for public swimming pools. Maximum capacity regulations are important for safety but focus on crowd management rather than water quality. Nighttime security measures relate to safety and security but do not impact the immediate health standards of the swimming environment. Similarly, the availability of recreational programs improves the overall experience but is not a health standard. Thus, the emphasis on water quality is foundational for public health and safety standards in swimming pools.