What must new and repaired mains undergo before being put into service?

Before new and repaired mains are put into service, they must undergo both flushing and disinfecting. Flushing is essential as it removes debris, sediment, and any build-up that may have occurred during installation or repair. This process also helps to ensure that the water quality meets regulatory standards before it enters the distribution system.

Disinfecting with some type of chlorine is equally important because it eliminates pathogens and harmful microorganisms that could pose health risks to users. The use of chlorine, or other disinfection methods, ensures that the water is safe for consumption.

Together, these procedures—flushing and disinfecting—are critical in maintaining water quality and public health standards, making them a necessary step prior to putting any new or repaired mains into service.