If volatile organic chemicals (VOCs) are detected, sampling must then be conducted ...?

When volatile organic chemicals (VOCs) are detected in a water supply, the regulation typically mandates that subsequent sampling for these contaminants must occur on a quarterly basis. This frequency of monitoring is essential because VOCs can pose serious health risks and might fluctuate in concentration over time due to changes in environmental conditions or contaminant sources.

By conducting quarterly sampling, operators can closely monitor the levels of VOCs and ensure that they remain below the established safe thresholds. This approach allows for timely responses to any detected increases in concentration, thus safeguarding public health. Regular monitoring helps in assessing the effectiveness of any treatment methods in place and provides a consistent data set for evaluating trends related to the presence of VOCs in the water system.