No, it isn't against the law for children to be unattended in a public pool/spa. The laws regulating public swimming pools and spas contain specific requirements for warning signs in the pool enclosure. Many people are familiar with the warning signs that state, "Warning-No Lifeguard on Duty, Children Under the Age of 14 Should Not Use Pool Without an Adult in Attendance." Although the law requires this warning sign at all public swimming pools and spas without lifeguards, the law does not prohibit unattended children in the pool/spa area.