Windsor County's groundwater contains radon, manganese, iron, arsenic, chloride, lead, nitrate, and uranium. Several of these contaminants are present at levels high enough to exceed EPA health standards, making them a concern for well owners.
These contaminants come from natural rock formations in the county. Radon seeps from uranium-bearing rock deep underground. Manganese and iron dissolve naturally from the rock into the water as it moves through soil and stone. Arsenic, lead, and uranium are also naturally present in the local rock. Nitrate and chloride can come from both natural sources and human activities like farming or road salt use.
Groundwater in this county is hard, driven by calcium and magnesium from the local rock. As water flows through the ground, it dissolves these minerals from the stone. Hardness is a common feature across most wells in Windsor County.
Wells in Windsor County show elevated levels of several contaminants that exceed EPA health standards. Arsenic, lead, uranium, and radon are radioactive or toxic metals that can build up in your body over time and increase the risk of cancer and organ damage. Nitrate and chloride at high levels can affect how your blood carries oxygen and harm kidney function, especially in infants and people with certain health conditions. Manganese at elevated levels can affect the nervous system and cause problems with movement and learning, particularly in children.
Hard water is common in this county's wells, and while it does not pose health risks, it creates real problems around the house. Hard water leaves white scale buildup on faucets, showerheads, and inside pipes and water heaters. It makes soap work less well and can leave spots on dishes and clothes. Over time, hard water shortens the lifespan of water heaters, dishwashers, and other appliances.
Every well in Windsor County is different, and your well water may have much higher or lower levels than what is typical for the county. Testing is the only way to know what is actually in your water so you can treat it properly if needed. We recommend a comprehensive panel that checks for metals, minerals, bacteria, and radioactive contaminants, which generally costs between two hundred and four hundred dollars. Treatment options like reverse osmosis filters, activated carbon, or water softeners can address many of 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 ⓘ |
|---|---|---|---|---|---|
| Radon | 164 | 98% | High | High ⓘ | |
| Manganese | 982 | 13% | High | Moderate | |
| Iron | 796 | 11% | High | Moderate | |
| Lead | 3979 | 6% | High | Moderate | |
| Chloride | 1691 | 2% | High | Low | |
| Arsenic | 1965 | 1% | High | Low | |
| Uranium | 1748 | 0% | High | Low | |
| Nitrate | 1262 | 0% | High | Low | |
| Fluoride | 1953 | 0% | High | Low | |
| HFPO-DA (GenX) ⓘ municipal | 9 | 0% | Low | Safe ⓘ | |
| Nitrite | 1236 | 0% | High | Low | |
| PFHxS ⓘ municipal | 9 | 0% | Low | Safe ⓘ | |
| PFNA ⓘ municipal | 9 | 0% | Low | Safe ⓘ | |
| PFOA ⓘ municipal | 9 | 0% | Low | Safe ⓘ | |
| PFOS ⓘ municipal | 9 | 0% | Low | Safe ⓘ | |
| Sulfate | 45 | 0% | Moderate | Low | |
| Sodium | 768 | — | High | Low | |
| E. coli | 1* | 0% | Low | Low ⓘ | |
| Hardness | 493 | — | High | Low | |
| Total Coliform | 1* | 0% | Low | Safe ⓘ | |
| pH | 64 | — | Moderate | Low | |
| PFBS ⓘ municipal | 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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