Department of Health; waterworks; mandatory reporting of anomalies; negligence. Requires owners of waterworks to report any operational anomaly that could affect water quality, public health, or service continuity to the Virginia Department of Health's Office of Drinking Water (the Office) within 24 hours of discovery. The bill requires any critical equipment failure, including a pump failure or any other malfunction that poses an immediate risk to public health or disrupts water service to be reported to the Office within six hours of discovery. Under the bill, failure to comply with the reporting requirements constitutes negligence and failure to comply with the critical equipment failure reporting requirements constitutes gross negligence.