Fluoride in Orange County’s Aquifer 120FLRD
The U.S. Geological Survey has extensively sampled groundwater in Orange County, Florida, specifically focusing on the 120FLRD aquifer. From 2010 to 2026, 44 wells ranging from 280 to 1500 feet deep were tested 596 times for fluoride. The median fluoride concentration across these samples was 0.21 mg/L, with values ranging from 0.11 to 2.4 mg/L. Fluoride was detected in 583 out of 596 results; only 13 results were below the reporting limit.
Interpreting These Fluoride Findings
It’s important to note that none of the samples from this dataset exceeded federal fluoride thresholds. This means government data shows fluoride levels in these wells are within regulated limits. Detection of fluoride does not indicate unsafe water. Furthermore, these results represent regional aquifer conditions and do not specifically describe any individual household water source. Actual fluoride levels in your well or tap water would require direct testing of your water supply.
Why Fluoride Levels Matter at Home
Fluoride occurs naturally in groundwater and can impact taste, staining, and water quality aesthetics at higher levels. Some households look to manage fluoride because of personal preferences or the desire to reduce fluoride intake. For residents on municipal water supplies, fluoride is often added or adjusted within regulated ranges for dental health benefits. For users of private wells drawing from this aquifer, knowing the precise fluoride level requires water testing focused on fluoride concentration.
Testing Your Water for Fluoride
To understand your household’s fluoride level, obtaining a water analysis specific to your well or water source is essential. Water tests for fluoride can be done by certified laboratories using standardized methods. This testing will provide accurate data for decision-making regarding treatment options or adjustments.
Addressing Fluoride with Reverse Osmosis
One reliable approach documented for reducing fluoride in household water is reverse osmosis (RO) technology. The WSP 000 GPD Reverse Osmosis System – Commercial, which ships ready to configure, uses a semi-permeable membrane to reduce fluoride concentration along with other dissolved solids. This system is designed for residential-scale use and can provide fluoride removal, supporting improved water quality based on individual household needs.
Choosing to utilize a reverse osmosis system follows confirmation of fluoride levels through testing. It offers an effective method for residents seeking to manage fluoride presence in their water supply for taste, aesthetic concerns, or personal health preferences.
Summary
- Government sampling in Orange County’s 120FLRD aquifer shows fluoride levels ranging from 0.11 to 2.4 mg/L, all below federal limits.
- These regional results do not represent any specific household water source; individual water testing is necessary for accurate assessment.
- Fluoride presence in water is a common natural occurrence and not necessarily unsafe or harmful.
- Reverse osmosis technology, such as the WSP 000 GPD Reverse Osmosis System – Commercial, is a proven way to reduce fluoride at home once levels are confirmed.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2026-05-27. 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 Fluoride in the 120FLRD aquifer (Orange County): 596 results from 44 wells, median 0.21 mg/L, range 0.11-2.4 mg/L; none above any federal threshold

