Arsenic Presence in Walton County's 120UFAQ Aquifer: What Sampling Reveals
The U.S. Geological Survey has conducted groundwater sampling focused on the 120UFAQ aquifer in Walton County, Florida. Their data comes from two wells sampled between March 2015 and January 2026. Across three measurements, arsenic was detected consistently, with a median concentration of 1.4 micrograms per liter (µg/L) and a range from 0.49 to 1.5 µg/L. These wells are between 500 and 621 feet deep. Importantly, none of these levels exceed the federal arsenic threshold established for drinking water.
This regional data provides a snapshot of typical arsenic concentrations found within this aquifer. However, it does not specify the arsenic levels in your household water supply. Your own water quality must be verified through direct testing to determine if it aligns with or deviates from these regional measurements, especially after any equipment failure.
Why Testing Your Water Matters After Equipment Failure
The failure of your existing water treatment equipment leaves your household water unprotected from potential contaminants, including arsenic. While government data indicates that the aquifer’s arsenic levels are below federal safety limits on average, localized concentrations can vary. Testing your own water is the only way to confirm the current arsenic concentration and assess whether new treatment is necessary.
Testing should be conducted by an accredited laboratory using samples representative of your household’s water point to capture accurate arsenic levels. This step is critical before choosing any new water treatment approach, as it ensures that the solution matches your actual water conditions.
Understanding Arsenic’s Effects and Treatment Options
Arsenic is a naturally occurring element found in some groundwater sources. Prolonged exposure to elevated arsenic can impact water taste and pose health concerns where concentrations surpass regulatory limits. The key to managing arsenic is effective removal or reduction below levels suitable for your household’s use.
How Adsorptive Media Technology Helps
One documented method to reduce arsenic in residential water is through adsorptive media filtration systems, such as the C-Series Arsenic Filter. This technology uses specially designed media to attract and bind arsenic compounds, diminishing their concentration in the treated water.
The C-Series Arsenic Filter ships ready to configure with residential water systems, providing an option for households needing to manage arsenic after equipment failure. Because treatment needs vary, selecting this filter should follow confirmation of arsenic levels through precise testing.
Next Steps for Households in Walton County
- Obtain a current water test for arsenic from your household water supply.
- Compare your results to regional data from the 120UFAQ aquifer but rely on your own measurements for treatment decisions.
- Consider adsorptive media filtration technology like the C-Series Arsenic Filter as a treatment option if arsenic is elevated.
- Plan for a water treatment configuration tailored to your confirmed water conditions to restore your household’s water quality after equipment failure.
Where this information comes from
Source: USGS groundwater sampling. 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.

