What is a swab used for during the installation of a new water main?

A swab is specifically designed for cleaning and preparing the interior of a water main during the flushing process. When a new water main is installed, it is essential to ensure that the interior is free from debris, contaminants, and construction materials that may have accumulated during installation. By using a swab, operators can effectively clean the inside of the pipe to ensure that the water that will be flowing through it is safe and of high quality.

This cleaning process is an important step before the final flushing and testing of the system because any remaining particles could affect water quality or lead to operational issues down the line. The use of a swab helps maintain the integrity and cleanliness of the water supply system, ensuring that it meets health and safety regulations.