How many qualified staff members must perform and document total chlorine testing for a central water system?

In a central water system, total chlorine testing is critical for monitoring water quality and ensuring that the water remains safe for consumption. The requirement for two qualified staff members to perform and document this testing is based on established protocols designed to enhance accuracy and reliability in water testing processes.

Having two qualified individuals involved in the testing helps decrease the likelihood of errors, as they can double-check each other's work, validate results, and maintain high standards of documentation. This practice aligns with quality assurance and performance standards commonly found in water treatment regulations aimed at protecting public health. By requiring teamwork and verification, the process strengthens accountability and ensures that procedures are followed consistently.

The necessity for two qualified staff members fosters a collaborative environment, which not only enhances the trustworthiness of the testing data but also aids in the training and development of newer staff members as they work alongside experienced colleagues.