With the exception of such connections as have been properly made to the sanitary sewer system, all connections and provisions for disposal of a discharge from fixtures and equipment described in Section 1343.01 shall be considered temporary measures and connections of all such fixtures and equipment shall be made to the sanitary sewer system within thirty days after such connection is reasonably available. Connections to the sanitary sewer system shall be considered reasonably available whenever the conditions stipulated in Section 911.02(d) of the Streets and Public Services Code are present.