Radon, arsenic, and chloride are present in Lanier County groundwater. Radon levels exceed EPA health standards and warrant attention, while arsenic and chloride are detected but at levels below the health limit.
Radon comes from natural radioactive decay in sand and other rock materials that make up the shallow groundwater system here. Arsenic and chloride occur naturally in these surface rocks and sediments. The flat terrain and sandy soils in this region don't filter out these contaminants as effectively as deeper or clay-rich layers would.
Groundwater in this county is moderately hard, driven mainly by calcium and magnesium dissolved from the sand and sediment layers below. This moderate hardness is common across wells throughout the county because the surficial aquifer system naturally contains these minerals. Iron and sulfate levels remain low, keeping the water clear and without strong odors.
Wells in Lanier County contain radon at levels that exceed EPA health standards. Radon is a radioactive gas that comes from rocks underground. When radon gets into your well water and you drink it or breathe in the gas, it can damage your lungs over time and increase your risk of lung cancer. This is a serious health concern that needs attention.
The mineral content in county wells is moderate. Your water may leave some staining on fixtures or dishes because of iron and other minerals. You might notice slight buildup of scale inside pipes and appliances over time. The good news is that these issues are mainly about how your home looks and feels, not your health.
We recommend testing your well right away because every well is different and yours could have higher or lower levels than what we see across the county. A comprehensive testing panel will tell you exactly what is in your water so you can treat it properly. Testing for multiple concerns usually costs between $200 and $400. Radon removal systems and whole-house filtration can address these concerns if testing shows they are present in your well.
Not sure if your well is affected? Get certified results in 5–7 days.
Test Your Well Water with Tap Score →| Contaminant | Samples ⓘ | % Above MCL ⓘ | Distribution ⓘ | Confidence ⓘ | Risk ⓘ |
|---|---|---|---|---|---|
| Radon | 1 | 100% | Low | High ⓘ | |
| Lead | 3 | 0% | Low | Low ⓘ | |
| Fluoride | 9 | 0% | Low | Low ⓘ | |
| Nitrite | 3 | 0% | Low | Safe ⓘ | |
| Iron | 5 | 0% | Low | Low ⓘ | |
| Arsenic | 1 | 0% | Low | Low ⓘ | |
| Chloride | 11 | 0% | Low | Low | |
| Fluoride | 9 | 0% | Low | Low ⓘ | |
| Nitrite | 3 | 0% | Low | Safe ⓘ | |
| Manganese | 5 | 0% | Low | Low ⓘ | |
| Sulfate | 9 | 0% | Low | Low ⓘ | |
| Chloride | 11 | 0% | Low | Low | |
| Uranium | 1 | 0% | Low | Low ⓘ | |
| Hardness | 9 | — | Low | Low ⓘ | |
| Sodium | 9 | — | Low | Low ⓘ | |
| pH | 9 | — | Low | Low ⓘ |
MCL = Maximum Contaminant Level (EPA limit for public water; used as benchmark for private wells). Distribution shows % of sampled wells in each concentration band. Methodology.
* Microbial contaminants (E. coli, coliform) reflect only samples from the last 10 years.
Data shows potential risk — a certified test confirms whether your water is affected.
Order a Tap Score Test →Population-level CDC data. Not individual risk prediction.
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