Frequent Questions

Is it possible to edit the Unregulated Contaminant Monitoring Regulation 2 (UCMR 2) public water system (PWS) inventory data that is pre-populated in the Safe Drinking Water Accession and Review System (SDWARS)?

Systems have until August 2, 2007 to revise sampling location and monitoring schedules in SDWARS. After August 2, 2007, a system must notify EPA directly if there are sampling location or inventory changes, or if the system cannot sample according to the established schedule.
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