The bill H. 5321 seeks to create the "Horse Creek Regional Public Service Authority" in South Carolina, which will oversee wastewater and sewage services in Aiken, Edgefield, and Saluda counties. This new authority will have the authority to construct and maintain necessary facilities, acquire land and equipment, and enter into contracts with local governments. It will be governed by a nine-member board appointed by the Governor, based on recommendations from county legislative delegations. The authority will also have the power to set its service rates without state regulation, and its property will be exempt from ad valorem taxes.

Additionally, the bill mandates the dissolution of the Aiken County Public Service Authority by September 30, 2026, with all its assets, liabilities, and documents being transferred to the Horse Creek Regional Public Service Authority. This transition aims to enhance the efficiency of wastewater and sewage services in the region. The bill includes provisions for penalties related to tampering with the authority's facilities and allows for vulnerability assessments and emergency response planning. The act will take effect simultaneously with the dissolution of the Aiken County Public Service Authority.