Groundwater in Hall County contains radon, manganese, and nitrate at levels high enough to exceed EPA health standards. These contaminants are present at concentrations that warrant attention from well owners.
The rock beneath Hall County is crystalline and hard, which naturally releases manganese and radon into groundwater over time. Nitrate comes from human activities on the land surface, such as septic systems and fertilizer use, and seeps down into the water below. The same rock type appears across all the neighboring counties in this region.
Groundwater in Hall County is moderately hard, driven mainly by dissolved minerals in the crystalline rock. The water has low iron and low sulfate, making it relatively balanced despite the moderate hardness. These characteristics are common across wells throughout the county.
Wells in Hall County sometimes contain manganese, nitrate, and radon at levels above EPA health standards. Manganese can affect the nervous system and cause learning problems in children when consumed over time. Nitrate is especially dangerous for babies and can interfere with how blood carries oxygen. Radon is a radioactive gas that increases lung cancer risk when you breathe it in from water over many years.
The moderate hardness in county well water can leave white scale buildup on faucets and fixtures and make soap less effective for cleaning. You might notice spots on dishes after washing or feel a film on your skin after showering. The good news is that iron, sodium, and sulfate levels in this county are low, so staining and taste problems from those minerals are not a major concern here.
We recommend testing your well water to find out what is actually in it, since every well is different and yours could have higher or lower levels than the county average. A comprehensive panel that checks for metals, minerals, bacteria, and chemicals typically costs between $200 and $400 and is the only way to know what treatment your well needs. Water softening systems and radon removal systems are available options depending on what your test shows.
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 ⓘ | |
| Manganese | 5 | 40% | Low | High ⓘ | |
| Nitrate | 4 | 25% | Low | High ⓘ | |
| Arsenic | 1 | 0% | Low | Low ⓘ | |
| PFOS ⓘ municipal | 6 | 0% | Low | Safe ⓘ | |
| PFHxS ⓘ municipal | 6 | 0% | Low | Safe ⓘ | |
| Sulfate | 8 | 0% | Low | Low ⓘ | |
| Uranium | 1 | 0% | Low | Low ⓘ | |
| Uranium | 1 | 0% | Low | Low ⓘ | |
| Sulfate | 8 | 0% | Low | Low ⓘ | |
| PFOS ⓘ municipal | 6 | 0% | Low | Safe ⓘ | |
| PFHxS ⓘ municipal | 6 | 0% | Low | Safe ⓘ | |
| Lead | 1 | 0% | Low | Low ⓘ | |
| Fluoride | 8 | 0% | Low | Low ⓘ | |
| HFPO-DA (GenX) ⓘ municipal | 6 | 0% | Low | Safe ⓘ | |
| Nitrite | 1 | 0% | Low | Safe ⓘ | |
| Chloride | 8 | 0% | Low | Low ⓘ | |
| Iron | 5 | 0% | Low | Low ⓘ | |
| PFNA ⓘ municipal | 6 | 0% | Low | Safe ⓘ | |
| PFOA ⓘ municipal | 6 | 0% | Low | Safe ⓘ | |
| pH | 8 | — | Low | Low ⓘ | |
| Sodium | 8 | — | Low | Low ⓘ | |
| Hardness | 8 | — | Low | Low ⓘ | |
| PFBS ⓘ municipal | 6 | — | Low | Safe ⓘ |
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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