Small Water System Operator Certification Practice Exam

When a system has an action level exceedance for lead and copper, the focus is on evaluating and implementing corrosion control measures. The best next step is to complete the DNR Corrosion Control Treatment Recommendation Packet. This formal process brings regulatory guidance into play and helps determine what treatment changes are needed (such as adjusting pH/alkalinity, adding corrosion inhibitors, or other options) and how to monitor effectiveness. Signing signage for a boil-water advisory isn’t appropriate here, since that relates to microbiological contamination; ceasing sampling would violate regulatory requirements; simply increasing chlorine dose doesn’t address the underlying lead corrosion issues. The corrosion control treatment recommendation packet provides a structured path to reduce lead and copper release and bring levels back into compliance.