In this section, “public access point” includes a parking lot, playground, picnic area, boat launching ramp, or park. Within 24 hours after a leak is reported, the Commission shall post warning signs at each public access point to a waterway that becomes contaminated by a leak in a sanitary sewer line, pipe, or fixture that is connected to the sanitary sewer system of the Commission. A warning sign posted under this section shall include: the source and date of discovery of the leak; and the contact information, including a telephone number, of the Commission for members of the general public to use for obtaining additional information. The Commission: shall post the warning signs downstream from the leak in accordance with regulations adopted by the Commission; and is not required to post any warning sign upstream from a leak. The Commission shall adopt regulations to implement this section, including regulations concerning: the minimum distance from the source of a leak within which warning signs must be posted; and the form and content of the warning signs.