According to Chapter 290 Rules and Regulations, how often must chemical analysis of water supplies be conducted?

Chemical analysis of water supplies is essential for ensuring the safety and quality of drinking water. According to Chapter 290 Rules and Regulations, the requirement to conduct chemical analysis at least every year aligns with the objective to monitor water quality closely. This annual frequency allows for timely identification of contaminants and helps operators respond to any changes in water quality that might pose a risk to public health. Regular testing is crucial for maintaining compliance with safety standards and ensuring that the water supply remains safe for consumption.

While less frequent testing intervals might seem sufficient in some contexts, they could lead to undetected shifts in water quality, especially in situations with varying environmental conditions, sources of contamination, or changes in treatment processes. Therefore, the annual requirement is designed to provide a proactive approach to water quality management.