Concrete is a material that is widely used as a surface covering, because it not only has reliability in terms of strength, durability and ease of implementation, but also has high economic value. Therefore, with the current development of concrete technology, efforts are being made to improve the performance of concrete to be more effective and efficient as a surface covering material by creating a porous concrete structure that allows surface runoff to infiltrate into the soil. Covering the surface of porous concrete is a form of innovative approach that is unique in rainwater management and is effective in tackling environmental problems and supporting development based on ecosystem data collection in land development and stormwater management. Increasing the amount of concrete used in the world of construction will increase the demand for concrete materials and result in natural limitations in providing concrete-forming materials as well as causing a decrease in the amount of natural resources available for concreting purposes. environmental pollution. As in the cement factory Semen Tonasa enterprise, it produces bottom ash waste of 0.217 million tons/year, where such large waste requires special handling. The two main benefits of using bottom ash in civil construction are the reduction of greenhouse gas emissions and the generation of solid waste by coal-fired thermal power plants. In addition, bottom ash contains high amounts of SiO2, Al2O3 and Fe2O3 which increase the pozzolanic effect, mixed interlock and properties such as strength. It is hoped that the use of bottom ash can improve the performance of porous concrete as an environmentally friendly surface covering material. Overall, based on the results of permeability and compressive strength tests on porous concrete as an environmentally friendly surface covering by using bottom ash as a substitute for fine aggregate, the optimum bottom ash composition is obtained at 21.61% with a maximum compressive strength of 20.02 MPa and an effective permeability of 0 .5653 cm/s.