For a newly installed water main, how often should bacteriological sampling be performed?

For a newly installed water main, bacteriological sampling should be performed after the completion of every 1,000 feet. This practice is essential to ensure the safety and potability of the water being supplied through the newly laid piping. By conducting tests at this interval, operators can effectively identify any potential contamination or issues that may arise in the system, especially since new installations can be susceptible to microbial contamination due to construction activities and the presence of foreign materials.

Regular testing after specific segments like every 1,000 feet allows for more targeted assessments and can help pinpoint problems more efficiently. Frequent sampling is critical during the early phases of system operation to validate that the water complies with safety standards before it is supplied to consumers. This approach aligns with best practices for ensuring public health and water quality in newly constructed water distribution systems.