What 'Detected', 'Median', and 'Range' Mean in the Sampling Record on This Page
If you’re noticing copper-colored stains in your household water, you may wonder what copper levels are typical in your area. Government sampling in Dade County’s aquifer 338OSGE shows copper was detected in all four sample results taken from three separate wells between 2011 and 2017. The median copper concentration in these samples was 6.25 micrograms per liter (ug/L), with values ranging from 1.9 to 12.9 ug/L. 'Detected' means copper was measurable, but it does not imply the levels indicate a problem. The 'median' represents the midpoint value of the collected data, and the 'range' shows the minimum and maximum measurements found in those samples. These figures only reflect the sampled wells, not your specific water.
How to Compare This Area's Record with a Neighboring County's Without Overreading It
When comparing copper data from Dade County to adjacent regions, it’s important not to assume your home's water will exactly match these findings. Variations in geology, aquifer depth, and local water chemistry can cause differences in copper levels. The USGS data provides a regional snapshot rather than a household-specific reading. This means you should view nearby counties' copper sampling as context, not a direct indicator, and always rely on testing your own water to understand your unique situation.
How the Documented Treatment Technology Removes or Neutralizes the Constituent
To manage copper stains seen in sinks, tubs, or plumbing fixtures, the Autotrol Blue-Green Copper Stains Filter uses targeted treatment technology. This system is designed to reduce dissolved copper in household water supplies by capturing or neutralizing copper ions before they reach your taps. The Autotrol System ships ready to configure, providing a practical option that consumers can set up themselves. This technology addresses the copper detected in your local aquifer by lowering its potential to cause staining.
How Many Samples and Wells Stand Behind the Figures, and What a Small Sample Means
The copper data for Dade County’s aquifer comes from a limited number of samples: four measurements from three wells, sampled over a six-year period. These wells were between 99 and 180 feet deep. While useful, this small sample size means the data may not capture all variations in copper levels across the county or over time. A limited dataset means caution is necessary when applying these numbers to your household water. Testing your own supply is the only way to get accurate copper concentrations for your specific situation.
What the Measured Range Means Against the Relevant Federal Standard, and What It Does Not Mean
None of the copper sample results from Dade County aquifer 338OSGE exceeded federal drinking water thresholds. This means the detected copper levels are within the limits set to ensure safety. However, it does not imply that copper staining cannot occur, as stains result from copper's interaction with your home's plumbing and surfaces, not purely from health concerns. Also, detection below these thresholds is not a violation or an unsafe condition. It is simply a measurement that can help homeowners understand what might be contributing to visible copper stains.
What You Should NOT Conclude from Area Data
While the USGS sampling provides a valuable overview of copper in Dade County groundwater, it does not establish the copper concentration in your household water. Variability in water sources, well depth, plumbing materials, and water chemistry means your home's situation may differ. Only a private water test from your well or tap can confirm your actual copper level. The presence of copper in area groundwater does not guarantee staining or health issues at your residence. Using the Autotrol Blue-Green Copper Stains Filter can help manage copper-related staining, but deciding on treatment should be based on your own water analysis rather than area data alone.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2017-07-12. These figures describe groundwater sampled in this area. They are not a test of any individual private well - only a test of that well can establish its own water.
On record: U.S. Geological Survey sampling of Copper in the 338OSGE aquifer (Dade County): 4 results from 3 wells, median 6.25 ug/L, range 1.9-12.9 ug/L; none above any federal threshold
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