Final answer:
Wading pool and spa drains must be properly covered with federally compliant drain covers and should have safety systems like SVRS to prevent injuries caused by suction. Regular maintenance is also crucial.
Step-by-step explanation:
Wading pool and spa drains must be covered properly with drain covers that are compliant with federal safety standards such as those specified by the Virginia Graeme Baker Pool and Spa Safety Act. These regulations are designed to help prevent injuries caused by suction from the drains, including entrapment hazards. Drains also need to have safety vacuum release systems (SVRS) or other similar systems to further ensure safety. In addition, regular maintenance and inspection are important to ensure that these safety features remain effective over time.