What type of telephone is required at swimming pools?

A land line phone permanently mounted at swimming pools is required because it ensures reliable communication in case of emergencies. Unlike cell phones, which may have variable reception and could potentially run out of battery, a land line is always powered and provides a stable connection. This is particularly crucial in an emergency situation where immediate contact with emergency services is necessary.

Permanently mounted phones also eliminate the chance of them being misplaced or having low battery issues, which can happen with personal devices. The presence of a land line phone is typically mandated by health and safety regulations for public swimming facilities to ensure the safety of patrons and facilitate quick response times in emergencies. This aligns with best practices for pool safety and emergency preparedness, making the land line phone the most appropriate choice.