Construction of swimming pools typically involves several key steps, including site preparation, excavation, installation of the pool structure, plumbing and electrical work, and finishing touches such as decking, landscaping, and filling the pool with water.

1. Site preparation: Before construction can begin, the area where the pool will be located needs to be properly cleared and leveled. This may involve removing any vegetation, rocks, or obstacles from the site.

2. Excavation: Once the site is prepared, excavation can begin to dig out the hole where the pool will be located. The size and shape of the pool will determine the depth and width of the excavation.

3. Installation of the pool structure: The pool structure, which can be made of various materials such as fiberglass, vinyl, or concrete, is then installed in the excavated hole. This structure will form the foundation and walls of the pool.

4. Plumbing and electrical work: Once the pool structure is in place, plumbing and electrical work can be completed. This includes installing the circulation system, filters, pumps, heaters, and lighting for the pool.

5. Finishing touches: After the pool is fully constructed and the plumbing and electrical work is completed, finishing touches can be added. This may include decking around the pool, landscaping, and any additional features such as waterfalls or fountains.

6. Filling the pool: Finally, the pool is filled with water and treated with chemicals to ensure proper balance and cleanliness.

Overall, the construction of a swimming pool is a complex process that requires careful planning and coordination of various elements. It is important to work with experienced professionals who can ensure that the pool is built correctly and meets all safety and quality standards.