Cleaning and disinfection
Wash inside the new pipes by flushing with water or other suitable method.
Wash again if necessary until the water turbidity is less than the maximum allowed by applicable standards and regulations.
Disinfect and rinse the pipes.
Take a water sample for internal control according to the applicable instructions.
Use a suitable method to rinse the pipeline again.
Immediately have control samples taken by the approved laboratory responsible for water monitoring.
Repeat the procedure under the same conditions if the results are unfavourable.
Cleaning and disinfection of pipes are carried out by the contractor