What is the minimum height of lettering for depth markers in a public swimming pool?

The minimum height of lettering for depth markers in a public swimming pool is established at 4 inches to ensure visibility and comprehension by users of the pool. This standard is critical for safety, as clear depth indicators help swimmers understand the varying depths throughout the pool, reducing the risk of accidents or injuries.

Having lettering at this height makes it easily readable from a distance, accommodating individuals of all ages, including children and those with vision impairments. Proper signage is a key component of pool safety regulations, as it informs users and helps promote responsible swimming practices.