Understanding Acidic Water in Union County: What Local Aquifer pH Data Reveals
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Which Household Fixtures and Appliances Are Affected First by Acidic Water and Why
Acidic water can influence certain home plumbing components before others. Fixtures made from metal, especially those with brass or copper, tend to show effects first. These include faucets, showerheads, and pipes supplying water to sinks and appliances. Over time, acidic water can accelerate wear on these components, sometimes causing visible changes like dulling or minor surface degradation. Understanding which parts of your home water system are most vulnerable helps focus attention on where to observe potential issues early.
How Public-System Records Differ from Private-Well Testing in What They Establish
Records from public water systems or regional aquifer sampling provide an overview of water quality in a general area but do not describe the specific condition of an individual well or household water supply. The U.S. Geological Survey has sampled wells in Union County’s 124SPRT aquifer, reporting pH values across many wells ranging from 7.5 to 9.1 standard units with a median of 8.6. These samples come from wells between 260 and 783 feet deep. While this data gives a useful picture of what is typically found in this aquifer, only a test of your home's water supply can determine your actual pH. Local well conditions can vary due to factors like depth, casing, and surrounding geology.
What Happens When Acidic Water Is Left Untreated for Years, Stated Without Exaggeration
Prolonged exposure to water with a low pH can increase the potential for gradual deterioration of metal plumbing components. This may lead to staining on sinks or bathtubs and could affect water taste or clarity in subtle ways. However, the presence of acidic water itself is not a health risk but an aesthetic and material quality concern. Regular monitoring and addressing any issues with appropriate treatment can preserve household fixtures and maintain water quality over time.
Why Aesthetic Secondary Standards Differ from Health-Based Limits, Applied to pH
The Environmental Protection Agency (EPA) defines secondary standards for pH to address aesthetic factors such as taste, staining, and corrosivity rather than health risks. For pH, the secondary standard range is 6.5 to 8.5 standard units. This range aims to identify water that might cause unpleasant effects or damage to plumbing. The data from wells in Union County’s 124SPRT aquifer show that none of the 167 samples fell below the lower limit of 6.5, indicating that acidic water below this range has not been detected in this area’s sampled wells. It's important to note that these secondary standards are guidelines and not enforceable health limits.
What 'Detected,' 'Median,' and 'Range' Mean in the Sampling Record on This Page
The term detected means the pH level was measured and recorded in each of the 167 samples; it does not imply any violation or unsafe status. The median is the middle value of pH results from all samples, here reported as 8.6 standard units, indicating typical water in the area is slightly alkaline rather than acidic. The range shows the span of measurement, from 7.5 to 9.1 standard units, reflecting natural variation across different wells. None of the samples fell below the 6.5 standard units mark that would suggest acidic water according to EPA secondary standards. These figures provide context but cannot substitute for direct testing of your household water.
To determine whether your home’s water requires treatment for acidity, a certified laboratory pH test of your water is essential. If your water tests below desired pH levels, you may consider the Autotrol Acidic / Low-pH Water Filter, a system designed to address low-pH water by adjusting its balance. This product ships ready to configure and can help manage water acidity for household use based on measured pH values.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2026-07-30. 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 pH in the 124SPRT aquifer (Union County): 167 results from 26 wells, median 8.6 standard units, range 7.5-9.1 standard units; EPA secondary standard for pH is 6.5-8.5 (aesthetic/corrosivity, not health-based); 0 of 167 sampled results fell below 6.5