Records of chemical analyses should be kept for?

Keeping records of chemical analyses for 10 years is essential for ensuring compliance with regulatory requirements and maintaining historical data on water quality. This timeframe allows water operators to track trends in water quality, monitor the effectiveness of treatment processes, and respond to any potential contamination events.

Maintaining thorough records for this duration is crucial for regulatory agencies that may require access to historical data during inspections or assessments. Furthermore, having a well-documented history can aid in making data-driven decisions about water treatment and management strategies, helping to ensure the safety and quality of the water supply over time. Hence, the 10-year requirement is a standard practice in water management, reflecting industry guidelines and regulations.