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Are States required to keep an active database of their unregulated contaminant monitoring data?

April 26, 2017active contaminant Data database monitoring unregulated

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Are States required to keep an active database of their unregulated contaminant monitoring data?

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No, a State is not required to keep any unregulated contaminant data. The reporting relationship is between the PWS and EPA. States may request specific data reports from their PWSs and may access the SDWARS/UCMR data system to review the PWS approved unregulated contaminant monitoring results.