Greene County's groundwater contains radon, arsenic, and chloride. Radon is the only contaminant detected at levels exceeding EPA health standards, making it the main concern for well owners in this area.
Radon enters groundwater naturally from the breakdown of uranium in the crystalline rock beneath Greene County. Arsenic and chloride also come from the minerals in this bedrock, where water dissolves them slowly as it passes through cracks and fractures in the stone. This county shares the same rock type with surrounding areas, so these contaminants appear across the whole region.
Groundwater in this county is moderately hard, driven by calcium and magnesium released from the crystalline bedrock. As water filters through this rock over time, it picks up these minerals. Most wells in Greene County show this moderate hardness, though the levels of iron and other minerals remain low.
Radon is the main health concern for wells in Greene County. Radon is a radioactive gas that comes from the ground and can build up in groundwater. Breathing radon gas that escapes from water into the air over many years raises the risk of lung cancer. Arsenic and chloride are also present in some county wells and can cause health problems with long-term exposure.
The mineral content in county wells is moderate. You may notice some staining from iron or buildup of scale on fixtures and in pipes, though the levels here are low enough that most people do not experience major problems. Your appliances should not wear out faster than normal.
We recommend testing your well for radon, arsenic, and bacteria. Every well is different, and your water may have higher or lower levels than what is common in the county. Testing is the only way to know what is actually in your well so you can treat it properly if needed. A comprehensive panel costs between two hundred and four hundred dollars. If radon is found, aeration systems or activated carbon filters can help remove it.
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 | 2 | 100% | Low | High ⓘ | |
| PFOA ⓘ municipal | 15 | 0% | Moderate | Safe | |
| Chloride | 7 | 0% | Low | Low ⓘ | |
| PFNA ⓘ municipal | 15 | 0% | Moderate | Safe | |
| Fluoride | 7 | 0% | Low | Low ⓘ | |
| HFPO-DA (GenX) ⓘ municipal | 15 | 0% | Moderate | Safe | |
| Nitrite | 3 | 0% | Low | Low ⓘ | |
| Arsenic | 3 | 0% | Low | Low ⓘ | |
| Iron | 3 | 0% | Low | Low ⓘ | |
| PFOA ⓘ municipal | 15 | 0% | Moderate | Safe | |
| Arsenic | 3 | 0% | Low | Low ⓘ | |
| Chloride | 7 | 0% | Low | Low ⓘ | |
| Fluoride | 7 | 0% | Low | Low ⓘ | |
| HFPO-DA (GenX) ⓘ municipal | 15 | 0% | Moderate | Safe | |
| Iron | 3 | 0% | Low | Low ⓘ | |
| Lead | 3 | 0% | Low | Low ⓘ | |
| Manganese | 3 | 0% | Low | Low ⓘ | |
| Nitrate | 7 | 0% | Low | Low ⓘ | |
| Nitrite | 3 | 0% | Low | Low ⓘ | |
| PFHxS ⓘ municipal | 15 | 0% | Moderate | Safe | |
| PFNA ⓘ municipal | 15 | 0% | Moderate | Safe | |
| PFOS ⓘ municipal | 15 | 0% | Moderate | Safe | |
| Sulfate | 7 | 0% | Low | Low ⓘ | |
| Uranium | 2 | 0% | Low | Low ⓘ | |
| Hardness | 7 | — | Low | Low ⓘ | |
| PFBS ⓘ municipal | 15 | — | Moderate | Low | |
| pH | 7 | — | Low | Low ⓘ | |
| Sodium | 7 | — | 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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