What does government sampling say about radon in Broward County groundwater?
The U.S. Geological Survey collected samples from six separate wells in the Broward County aquifer between June and September 2016. Radon-222 was detected in all six wells, with results ranging from 210 to 870 picocuries per liter (pCi/L) and a median value of 415 pCi/L. These wells were between 96 to 140 feet deep. None of the results exceeded any federal thresholds.
How is radon different from other common water concerns people confuse it with?
Radon is a naturally occurring radioactive gas that can dissolve into groundwater. Unlike contaminants that affect water taste, odor, or appearance, radon is odorless, colorless, and tasteless. It differs from chemical pollutants or microbial contaminants in that it emits radiation and is measured in picocuries per liter rather than concentration by weight. Radon also differs from problems like iron staining or hardness because it does not cause discoloration or scaling.
What happens if radon in household water is left untreated over many years?
Long-term exposure to radon from inhalation or ingestion may increase certain health risks, primarily linked to its radioactive properties. Radon entering a home’s air from water during activities like showering can contribute to indoor radon levels. Without treatment, radon might accumulate in indoor air, though waterborne radon usually contributes less to overall radon exposure than soil gas. Understanding and managing radon levels helps reduce potential risks.
What should a homeowner note before seeking advice about radon treatment?
- Whether your water supply is from a private well or municipal system
- Any previous radon test results for your water and indoor air
- The depth and type of your well if applicable
- Whether you have noticed any unusual water conditions (taste, odor, staining)
- Local groundwater radon data such as the USGS figures for Broward County
How does radon enter groundwater in the Broward County aquifer?
Radon originates from the natural radioactive decay of uranium in rocks and soil beneath the earth’s surface. In Broward County, this process allows radon gas to dissolve into groundwater as it moves through subsurface rock formations. The depth of wells sampled (96 to 140 feet) reflects this interaction. Radon can then be transported with groundwater that provides household water.
What does a certified laboratory test for radon report, and how should homeowners read it?
A certified lab test measures radon concentration in water in picocuries per liter (pCi/L). Test results will show a numeric value representing the amount of radon detected. Because radon levels can vary by well and over time, this value must be interpreted with local data and guidance. No detection means radon is below the lab’s reporting limit, while detection means radon is measurable but not necessarily a violation or unsafe by legal standards.
How do public water system radon records compare to private well testing?
Public system reports, like those from municipal supplies, show comprehensive monitoring results and compliance with regulatory thresholds over time but may not reflect individual household water. Private well testing is necessary for homeowners to understand their specific water conditions since groundwater radon can vary widely over short distances. Public records provide useful context but are not a substitute for private testing.
What should you not conclude from Broward County radon data?
Area data from the USGS confirms radon is detectable in Broward County groundwater but does not determine radon levels in any individual home’s water supply. Detection is not a violation or an immediate safety concern by itself. To evaluate your household’s water, testing your well or supply is essential. Radon treatment options, such as the Autotrol Radon in Water Filter, are designed to reduce radon levels once testing confirms it is present at higher concentrations.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2016-09-01. 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 Radon-222 in the aquifer (Broward County): 6 results from 6 wells, median 415.0 pCi/L, range 210.0-870.0 pCi/L; none above any federal threshold
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