Develop and implement an action plan that includes sufficient policies, procedures, and controls that address households living in multifamily housing units having a sufficient supply of safe drinking water. Such policies, procedures, and controls should include but not be limited to (1) developing and implementing internal procedures to be notified, and share with the owners and management agents of the multifamily housing properties, when the public water systems’ water exceeds the Environmental Protection Agency’s lead action level and (2) revising HUD’s applicable regulations, providing guidance to the owners and management agents, and taking appropriate actions so that households living in multifamily housing units have a sufficient supply of safe drinking water.