The sewer user shall pay for the use of the sewer, and the fee shall be calculated and collected using the following methods:
1.In proportion of the quantity used of tap water and other water of the sewer users.
2.Using the quality and quantity of the sewage drained off by the sewer user.
3.Other method approved by the competent authority.
The calculating and collecting regulations for the fee for use in the preceding Paragraph shall be stipulated by the competent authorities of the special municipality and county or city and further reported with the central competent authority for its approval.

If the sewer user fails to pay for the fee for use under the Act, there shall be imposed a delay penalty of one percent of the overdue fees for every three days starting from the second day of the expiration of payment. If the delay is longer than one month, and the sewer user refuses to pay after being notified, the sewerage institution may file with the court for compulsory enforcement for a ruling.