A method is provided in one example embodiment and includes detecting user plane congestion at an eNodeB in connection with subscribers of a first one of a plurality of public land management networks (“PLMNs”) sharing a radio access network (“RAN”), identifying one or more of the PLMNs to be notified of the detected congestion in accordance with an agreement between the PLMNs, and reporting RAN congestion information (“RCI”) regarding the detected congestion to only the identified one or more of the PLMNs. The detecting may comprise determining whether detected user plane congestion exceeds a first congestion threshold indicated for the first one of the PLMNs. The method may further comprise terminating the RCI reporting when the detected congestion falls below a second congestion threshold specified for the first one of the PLMNs. The first and second thresholds may be indicated in a table associated with the eNodeB.