How often should water quality monitoring records be reviewed?

The frequency of reviewing water quality monitoring records is vital for ensuring the safety and compliance of drinking water systems. An annual review is considered best practice because it allows for a comprehensive assessment of water quality trends over a significant period. By reviewing the records annually, water system operators can identify potential concerns that may not be apparent in shorter review cycles, such as seasonal variations or long-term trends in contaminant levels.

This annual assessment is particularly important for maintaining regulatory compliance, assessing the effectiveness of any water treatment processes, and implementing necessary changes or improvements. It also provides an opportunity to evaluate the data against established standards and benchmarks. While more frequent reviews, such as monthly or quarterly, might be beneficial for operational adjustments and immediate response to quality issues, the annual review serves as a thorough analysis point that helps ensure overall water quality management and public health safety.