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Understanding Water from Highlands County Aquifer 120UFAQ

Water in Highlands County often comes from deep wells tapping the aquifer identified as 120UFAQ. This groundwater travels through rock layers and soil before reaching household taps. The chemical makeup of this water depends on natural underground conditions, which can sometimes introduce compounds that cause noticeable odors like sulfur smell.

What a Certified Laboratory Test for Sulfide Shows

When you have water tested at a certified laboratory, the results will report sulfide content in milligrams per liter (mg/L). This number reflects the concentration of sulfur-containing compounds that may cause a rotten-egg smell. The test result is not a safety judgment—it only quantifies the chemical's presence in your water sample.

How Sulfide Enters Groundwater Here

In Highlands County's aquifer 120UFAQ, sulfide compounds naturally occur due to the breakdown of organic material and minerals under low-oxygen conditions deep underground. The U.S. Geological Survey sampled wells in this aquifer and found sulfide levels ranging from 0.0 to 0.3 mg/L. These measurements were from wells about 1,520 to 1,530 feet deep, showing the presence of sulfide within this geologic formation.

Differences Between Public System Records and Private Well Testing

Public water systems often report averaged or median data for their source aquifers, representing broad area conditions but not individual wells. Private well owners receive specific test results for their exact water supply. Area data, such as the USGS measurements, provide useful context but cannot substitute for personal testing to determine actual well water quality.

Example: Interpreting Median and Range from the USGS Record

The USGS data from Highlands County's aquifer 120UFAQ show a median sulfide level of 0.2 mg/L and a range between 0.0 and 0.3 mg/L. The median means half the sampled results were below 0.2 and half above it within this range. This suggests typical sulfide concentrations in the area are low to modest but vary slightly between wells.

Definitions: Detected, Median, and Range in This Sampling

In this record, 'detected' indicates sulfide was measurable in all three samples, with none falling below the reporting threshold. 'Median' is the middle value when results are ordered by concentration, and 'range' is the span from the lowest to highest measured value. These terms describe the dataset but do not imply any violation or unsafe condition.

Consequences of Leaving Sulfur Smell Untreated

If sulfur smell from sulfide persists without treatment, household water may develop a noticeable rotten-egg odor. While this is not a health hazard according to federal standards, it can be unpleasant and affect water taste and water-use experience. Over time, sulfide can also contribute to minor corrosion or staining in plumbing fixtures.

Considering Treatment Options for Sulfur Smell

To address sulfur odors, consumers in Highlands County may consider equipment designed to reduce sulfide levels. The Autotrol Rotten-Egg Sulfur Smell Filter system ships ready to configure for residential water treatment. This technology targets sulfur compounds effectively, improving water odor without complex setup needs.

The information on sulfide concentrations reflects data collected from Wells in Highlands County's aquifer 120UFAQ, sampled at depths around 1,520 to 1,530 feet, as reported by the U.S. Geological Survey. For detailed data, consult the government source directly.

Where this information comes from

Source: USGS groundwater sampling. Sampled 2026-01-26. 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 Sulfide in the 120UFAQ aquifer (Highlands County): 3 results from 2 wells, median 0.2 mg/L, range 0.0-0.3 mg/L; none above any federal threshold