If You See the Median Copper Level in Area Aquifer Data
Government testing in Preble County aquifer wells found copper detected in some samples at a median of 4.8 micrograms per liter (ug/L), with individual results ranging from 2.6 to 12.6 ug/L. Most samples showed copper below the reporting limit. This means the typical aquifer water in the area has low copper presence, though trace amounts can occur. As a homeowner, this gives you an initial indication but not your specific water quality, which can vary due to well depth, plumbing, or seasonal changes.
If You Compare These Levels to Federal Guidelines
The copper results from Preble County’s aquifer wells are all below federal action levels for copper in drinking water. This indicates that while copper is measurable, it does not exceed thresholds established to protect health. Keep in mind that copper presence alone, especially below such limits, does not automatically signal safety concerns or a requirement to treat water. However, copper can still contribute to metallic taste and affect water aesthetics.
If Your Household Is Large, Has a Second Home, or Is Seasonal
Larger households or multiple homes drawing from the same aquifer may experience variations in water chemistry, including fluctuations in copper concentrations. Seasonal usage or drawing from different depths in wells may also affect copper detection. Because of this variability, those with multiple properties or varied water demand should consider testing their individual water sources to confirm if copper is present at levels that influence taste.
If Your Plumbing System Is Older or Contains Metals
The presence and age of household plumbing materials can alter copper levels in tap water independently of source water composition. Copper pipes, fittings, or fixtures may leach copper into the water, sometimes contributing more to metallic taste than the aquifer water itself. Differentiating between source water copper and plumbing contributions requires targeted water testing.
If Metallic Taste from Copper Goes Untreated Over Time
Ignoring the metallic taste caused by copper can lead to ongoing dissatisfaction with water quality and possible staining on fixtures or laundry over long periods. There are no immediate health risks at the detected levels from the government samples, but the aesthetic concerns can persist without treatment, affecting daily water use comfort.
If Your Well or Source Type Differs in Depth or Construction
The copper levels found in shallow or deep wells may differ due to geological factors and well construction. Since the government data covers multiple wells of differing depths in the aquifer, individual well results may vary. Well owners should test their own water to determine copper concentration relevant to their specific source depth and type.
The copper data presented here comes from U.S. Geological Survey groundwater samples taken from four separate wells in the Preble County aquifer area between April and June 2013. This data reflects area-wide conditions but not any single residential well. Visit the U.S. Geological Survey website to view these measurements directly.
For households noticing a metallic taste potentially linked to copper, the C-Series Metallic-Tasting Water Filter ships ready to configure and is designed to address this issue effectively. Testing your own water source is the first step to decide if this equipment matches your treatment needs.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2013-06-20. 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 aquifer (Preble County): 14 results from 4 wells, median 4.8 ug/L, range 2.6-12.6 ug/L; none above any federal threshold