Ⅰ. Background and Aims of Research
oThe international community is emphasizing the need for carbon neutrality in response to the climate crisis, and the International Water Association (IWA) announced that the water management sector should account for up to 20% of the total carbon emission reduction in order to achieve carbon neutrality by 2050.

o The need to redefine the future functions and roles of sewage treatment facilities for a virtuous cycle of water, energy, and waste is also emphasized.

oTherefore, in the era of the great transition toward carbon neutrality, a new awareness of the future value of sewage is necessary.

oThis study aims to suggest future directions for the role and functions of existing sewage treatment facilities towards carbon neutrality

Ⅱ. Research Materials and Methods
oThis study analyzes changes in the purpose and functions of sewage management with reviewing trends and cases of sewage management policies in Korea and abroad to respond to the carbon-neutral era.
ㅇThe status of energy consumption and carbon emission of public sewage treatment facilities of 500 m3/day or more were analyzed. and the implementation status of sewage management policies, the role and functions of sewage treatment facilities and major issues in
ㅇBy examining changes in the domestic sewage treatment laws and systems carbon-neutral sewage management policies were also reviewed.

Ⅲ. Results and Conclusions
oThe paradigm shift of future sewage treatment facilities should be based on the principle of harmonizing safe water quality and carbon neutrality. Under this p