Groundwater in Green County contains iron, manganese, and nitrate at levels that exceed EPA health standards. These contaminants are present at concentrations your well should be tested for.
Iron and manganese dissolve naturally as groundwater moves slowly through the deep rock layers beneath the county. Nitrate enters from the surface through soil and reaches the water below, often from fertilizers and animal waste in agricultural areas.
Groundwater in this county is very hard, driven by elevated calcium and magnesium released as water passes through the limestone and sandstone rock. These minerals are common in wells across Green County because the deep aquifer naturally dissolves them as water seeps downward over time.
Iron, manganese, and nitrate are found at elevated levels in wells throughout Green County. Iron and manganese can affect how your body absorbs other nutrients over time. Nitrate is especially concerning for infants and young children, as it can interfere with how blood carries oxygen.
Wells in this county have very hard water, which leaves white scale buildup on faucets and inside pipes. You may notice staining from iron or difficulty getting soap to lather. Hard water can shorten the lifespan of water heaters and dishwashers.
We recommend testing your well water, since every well is different and yours may have higher or lower levels than the county average. Testing is the only way to know what is actually in your water so you can treat it properly. A comprehensive metals and minerals panel typically costs $200 to $400. Treatment options like iron removal systems and water softeners can address these concerns.
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 ⓘ |
|---|---|---|---|---|---|
| Iron | 67 | 19% | Moderate | High | |
| Nitrate | 40 | 8% | Moderate | Moderate | |
| Manganese | 66 | 5% | Moderate |
Moderate
Elevated concentration, not % above limit
|
|
| Arsenic | 5 | 0% | Low | Low ⓘ | |
| Chloride | 69 | 0% | Moderate | Low | |
| Fluoride | 62 | 0% | Moderate | Low | |
| HFPO-DA (GenX) ⓘ municipal | 12 | 0% | Low | Safe | |
| Lead | 5 | 0% | Low | Safe ⓘ | |
| Nitrite | 28 | 0% | Moderate | Low | |
| PFHxS ⓘ municipal | 12 | 0% | Low | Safe | |
| PFNA ⓘ municipal | 12 | 0% | Low | Safe | |
| PFOA ⓘ municipal | 12 | 0% | Low | Low | |
| PFOS ⓘ municipal | 12 | 0% | Low | Safe | |
| Sulfate | 69 | 0% | Moderate | Low | |
| Hardness | 69 | — | Moderate | Low | |
| PFBS ⓘ municipal | 12 | — | Low | Safe | |
| pH | 68 | — | Moderate | Low | |
| Sodium | 33 | — | Moderate | 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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