Enterprises in the sewage system area that do not discharge produced wastewater or sewage into the sewage system (hereinafter referred to as “Sewer Connection”) shall not discharge it into any surface water body without the consent of the sewage management authority (agency) and acquisition of the surface water body discharge permit or a simple discharge permit document.

The wastewater or sewage that the enterprises referred to in the preceding paragraph produces shall not be discharged into the drainage that is exclusive for the rainwater in the sewage system area. However, this is not applicable if the discharge has been approved by the sewage management authority (agency) and competent authority.

In case the sewage management authority (agency) finds that a sewer-connected enterprise does not observe the water quality standard for the sewage system and notifies it to make improvement within a time frame, such enterprise shall apply for a permit (document) to the Issuing Authority if it intends to take pollution control measures other than connection to the sewer.
Where the enterprise referred to in the preceding paragraph is not able to make the improvement within the specified time frame and the sewage management authority (agency) rejects the sewer connection or notifies it to stop using the sewerage, such enterprise shall stop producing wastewater or sewage before obtaining the permit (document) approved by the Issuing Authority.
When notifying an enterprise to make improvement within a specific time frame or rejects sewer connection, the sewage management authority (agency) shall inform the authority competent.