If You Observe Changes in Water Behavior Over Seasons or Years
The U.S. Geological Survey monitored pH levels in groundwater from Dougherty County's aquifer 120FLRDU, collecting 189 samples from 23 wells between November 2010 and December 2025. These results show a range of pH values from 6.2 to 8.5 standard units, with a median of 7.4. This range indicates that naturally occurring water conditions in this aquifer vary over time and by depth, with wells sampled at 64 to 218 feet deep. The occasional readings below 6.5 suggest that some water can be acidic and potentially corrosive, but this represents a minor portion of the data. Variation over multiple years reflects natural fluctuations in the aquifer's chemistry rather than an immediate household condition.
If You Receive a Certified Laboratory Test for Your Household Water
A certified water analysis will report the pH of your specific water supply as a numerical value or range, measured in standard units. This number helps determine water corrosivity since pH below about 6.5 is more acidic and can accelerate pipe deterioration. Conversely, pH values higher than 8.5 may cause scaling but are less related to corrosion. The U.S. EPA secondary standard for pH, covering aesthetics and corrosivity, is 6.5 to 8.5 standard units; it is not a health-based limit but guides water treatment needs. Knowing your water’s pH is essential since overall groundwater pH in Dougherty County may not reflect your well or tap water conditions.
If You Consider the Influence of Your Home’s Plumbing Material and Pipe Age
Corrosion damage results not only from source water chemistry but also from how that water interacts with plumbing materials and pipe age. Older metals like galvanized steel or iron may corrode more rapidly in acidic conditions, while newer plastic piping resists this effect. Variability in pipe materials throughout the home can cause uneven corrosion symptoms such as leaks or discoloration. Thus, even if local groundwater shows mostly neutral pH, corrosivity experienced in your residence depends on the combination of water chemistry and plumbing infrastructure.
If You Are a Commercial or Industrial Water User in Dougherty County
Commercial or industrial operators must address additional water quality questions beyond household concerns. These include managing corrosion rates under variable flow and pressure conditions, assessing impacts on equipment and heat exchangers, and meeting regulatory requirements unique to their operations. While this page focuses on residential considerations, understanding local groundwater pH variability remains important for all water users planning treatment or maintenance strategies.
If You Want to Understand What ‘Detected’, ‘Median’, and ‘Range’ Mean in the USGS Sampling Data
In the USGS groundwater results, “detected” means the instrument measured pH values in all 189 samples; none were below the limit of detection. The median value (7.4) represents the middle point of all pH readings, indicating typical water conditions. The range (6.2 to 8.5) shows the full spread of pH values from lowest to highest encountered in the aquifer sampling. These figures describe the general groundwater environment but do not establish conditions for any specific household supply.
What You Should Not Conclude: Area-level data do not specify your well water quality. A single acidic or corrosive reading in the region does not prove your water is corrosive, nor do normal pH results guarantee it is not. Water chemistry can change with well depth, plumbing materials, and local conditions. To address corrosive water effects from your household, consider a direct evaluation and treatment configured for your situation, such as the Autotrol Corrosive Water Damaging Pipes Filter, which is designed to mitigate corrosion impacts and protect home plumbing systems.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2025-12-15. 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 pH in the 120FLRDU aquifer (Dougherty County): 189 results from 23 wells, median 7.4 standard units, range 6.2-8.5 standard units; EPA secondary standard for pH is 6.5-8.5 (aesthetic/corrosivity, not health-based); 1 of 189 sampled results fell below 6.5
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