Lead and Copper Sample Summary Results

The Lead and Copper Sample Summary Results list displays sample summaries assessed for lead and copper 90th percentile, during a specific monitoring period for the water system you selected. The 90th percentile of all samples collected from the distribution system is the standard that the US Environmental Protection Agency has chosen for determining compliance with the Lead and Copper Action Level under the federal Lead and Copper Rule. The 90th percentile is determined by ranking all sample results from lowest to highest and finding a result that is 90% of the number of sample results from the top. For example, if there are 10 sample results, the 90th percentile would be the 9th sample result from the top.

On the Lead and Copper Sample Summary Results page you may view basic water system information, such as Water System No., Water System Name, Principal County Served, Status, Federal and State Type, Source, and Activity Date.

The Lead and Copper Sample Summary Results list displays Lead and Copper 90th Percentile Sample Summaries sample results for the last 2 years by default. If you need to search for a specific date range, use the Monitoring Period Begin Date From and To fields in the mm/dd/yyyy format and then click the Search button.

You can view the list of Lead and Copper 90th Percentile Sample Summaries for this water system using the following fields:

Data Quality Code

Monitoring Period Begin Date

Monitoring Period End Date

Number of Samples

Measure (mg/l)

Water System Facility State Asgn ID No.

Date Summary Received

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