This Law is stipulated for the purpose of facilitating the construction and management of the sewage in the planned urban and designated areas to protect the quality of water; with regard to matters not provided in this Law, other rules and regulations shall apply.

As used in this Law, the following terms shall carry their respective definitions:
1.Sewage means the rainwater, household wastewater and industrial wastewater.
2.Sewer means public sewerage that is established specially for processing the Sewage.
3.Public Sewer means the sewerage for public use.
4.Special Purpose Sewer means the Sewer that is established for use within limited areas or places but has not been included in the Public Sewer.
5.User means the user who uses the Sewer subject to the Law and the sewerage management regulations.
6.User's Drainage Facilities means the drainpipe and relative facilities established by the Sewer Users to connect the Sewer to drain off the Sewage.
7.Drainage Areas means the planned areas of the Sewer to drain off the Sewage.

The term "competent authority" as used in this Law denotes the Ministry of the Interior where the central government is concerned; where a municipality under the direct jurisdiction of the Executive Yuan is concerned, the government of such municipality; and where a county/city under direct jurisdiction of the Taiwan Province is concerned, the government of such county/city.

The central competent authorities shall handle the following matters:
1.Set up the development policies and schemes for the Sewer.
2.Set up the Sewerage rules and regulations and examine compliance.
3.Review and examine the development plan for the Sewerage system in the municipality and county/city.
4.Monitor and supervise the construction, management, research and development for the Sewerage system in municipality and county/city.
5.Administration of technique exams and the retraining of the Sewer operation and maintenance people.
6.Research and develop the sewerage techniques.
7.Coordinate the structure, construction and management of the Sewers in situations of multi-municipality and county/city or multi-counties/cities.
8.Other matters concerning national Sewerage.
If any of the above paragraphs is involved in environmental or water conservancy issues, it shall be proceeded jointly with central competent authorities in-charge of environment and water conservancy.

The competent authority for a municipality shall handle the following matters:
1.Plan and perform the municipality's Sewer construction.
2.Set up the municipality's sewerage regulations,
3.Research and development of the municipality's sewerage techniques.
4.Manage the Sewer of the municipality.
5.Retrain the Sewer operation and maintenance people.
6.Other matters concerning municipal sewerage.

The competent authority for a county shall handle the following matters:
1.Plan and perform the county's Sewer construction.
2.Set up the county's sewerage regulations,
3.Manage the Sewer of the county.
4.Monitor and supervise the construction and management for the sewerage system in the county.
5.Other matters concerning county sewerage.
The provisions of Items 1 to 3 and Item 5 in the preceding Paragraph shall apply mutatis mutandis to the Sewers of the provincial city by its competent authorities.

The Public Sewer shall be constructed and managed by local government or country/town/village office(s). Provided, when deemed necessary, the competent authorities may appoint a relevant public enterprise to construct and manage the Public Sewer.

The newly developed communities and industrial areas of the government authorities and the public enterprises, or other areas or places designated by the municipality and county/city competent authorities shall establish the Special Purpose Sewers. It shall be constructed and managed by each such authority or institution.
The private newly developed community, the industrial areas or other areas or places designated by the municipality and county/city competent authorities shall establish the Special Purpose Sewer. However, when deemed necessary, it may be constructed and managed by the local government, the county/town/village office(s) or an appointed relevant public enterprise or institution. The construction fee shall be pro rata allocated in calculation of the construction base and the floor square.
The allocated construction fee in the preceding Paragraph shall be imposed on and collected from the initial constructor when applying for the issuance of the construction license. The rule for imposing and collecting the construction fee shall be set up by the central competent authorities.

For the purpose of constructing and managing the Sewers, the central, municipality and county/city competent authorities shall appoint or set up a Sewer institution to handle the construction and management of the Sewers.