Sampling Data Behind Washoe County Copper Concentrations

Samples and Wells Count

The U.S. Geological Survey collected 19 copper concentration results from 15 wells in aquifer N100BSNRGB serving Washoe County. These wells ranged from 191 to 780 feet deep, representing a limited snapshot of groundwater quality over more than six years.

Implications of a Limited Sample Size

Because the data reflect a modest number of samples and wells, and do not represent an individual well, these figures offer insight into regional groundwater but cannot determine specific household water conditions.

What Happens if Copper Stains Persist Over Time

Appearance and Staining

When copper is present in water at certain levels and remains untreated, typical signs are blue-green staining on plumbing fixtures, sinks, or bathtubs. These stains can be persistent but do not indicate a safety issue by themselves.

Long-Term Effects

Over years, accumulated stains may impact the aesthetics of household surfaces and require cleaning or management to maintain appearance.

The Influence of Plumbing Materials and Age on Copper Stains

Material Contribution

Fixtures and pipes made from copper or containing copper components can release copper into water through corrosion or wear, which may contribute to staining independent of groundwater concentrations.

Age Factor

Older plumbing systems might experience increased copper leaching compared to newer systems due to pipe degradation or changes in water chemistry.

Understanding Terms in the Washoe County Sampling Record

Detected vs Non-Detected

In the sampling record, 'detected' means copper was measurable by instruments in 16 of the 19 samples. Detection does not mean unacceptably high levels, only that copper was present above a minimum reporting limit.

Median and Range Explained

The median copper concentration was 1.2 micrograms per liter, with individual samples ranging from 0.28 to 4.4 micrograms per liter. All results were below any federal threshold for copper in drinking water, confirming no regulatory exceedances in this dataset.

How to Interpret a Certified Copper Test for Your Household Water

Type of Reported Data

A certified laboratory test for copper in water will provide a measured concentration in micrograms per liter or parts per billion for your specific water sample.

Reading Your Results

Your water’s copper level must be compared to regional data and federal guidelines. A value within or below typical ranges observed in Washoe County suggests alignment with local water quality; values significantly above might indicate a plumbing-related source.

Next Step to Address Copper Stains in Your Washoe County Home

Order a certified copper concentration test for your household water to know your exact condition. If copper stains are present and your test confirms elevated copper, consider the C-Series Blue-Green Copper Stains Filter, which ships ready to configure and is documented to reduce copper-related staining effectively.

Where this information comes from

Source: USGS groundwater sampling. Sampled 2016-09-15. 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 N100BSNRGB aquifer (Washoe County): 19 results from 15 wells, median 1.2 ug/L, range 0.28-4.4 ug/L; none above any federal threshold