Groundwater in Hancock County contains iron, manganese, sulfate, chloride, nitrite, and radon. Several of these contaminants exceed EPA health standards, which is a serious concern that requires testing and treatment.
These contaminants come from the bedrock itself. Iron and manganese dissolve naturally as groundwater moves through cracks and fractures in the deep rock layers. Sulfate and chloride also come from minerals locked in the stone, while road salt contributes additional chloride to the water in some areas.
Groundwater in this county is very hard, with calcium and magnesium from the limestone and dolomite bedrock creating levels that are well above normal. Iron at high concentrations adds to the mineral burden in the water. These characteristics are widespread across wells throughout Hancock County.
Wells in Hancock County contain several metals and minerals that exceed EPA health standards. Chloride, nitrite, and radon in the groundwater raise health concerns over time. Manganese can harm brain development and nervous system function. Iron and sulfate at elevated levels can damage your kidneys and digestive system. These contaminants have no taste, smell, or color, so testing is the only way to know if they are in your well.
The mineral content in county wells creates significant quality-of-life problems. Water is extremely hard here, leaving thick white crusty buildup on fixtures and inside pipes. Iron causes orange or rust-colored stains on sinks, toilets, and laundry. Sulfate can give water a bitter or rotten-egg taste and smell. This extreme hardness shortens the lifespan of water heaters, dishwashers, and other appliances.
We recommend testing your well with a comprehensive metals and minerals panel, which typically costs $200-400. Every well is different, and your well 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 water so it can be properly treated. A water softener combined with an iron filter can address both the hardness and metal 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 | 85 | 64% | 25% · 12% · 64% | Moderate | High |
| Manganese | 19 | 56% | 26% · 21% · 53% | Moderate | High |
| Sulfate | 48 | 29% | 50% · 21% · 29% | Moderate | High |
| Radon | 4 | 25% | 50% · 25% · 25% | Low | High ⓘ |
| Chloride | 87 | 7% | 82% · 12% · 7% | Moderate | Moderate |
| Nitrite | 46 | 4% | 89% · 6% · 4% | Moderate |
Moderate
Elevated concentration, not % above limit
|
| HFPO-DA (GenX) ⓘ municipal | 4 | 0% | 100% · 0% · 0% | Low | Safe ⓘ |
| PFHxS ⓘ municipal | 4 | 0% | 100% · 0% · 0% | Low | Safe ⓘ |
| PFOS ⓘ municipal | 4 | 0% | 100% · 0% · 0% | Low | Safe ⓘ |
| PFOA ⓘ municipal | 4 | 0% | 100% · 0% · 0% | Low | Safe ⓘ |
| PFNA ⓘ municipal | 4 | 0% | 100% · 0% · 0% | Low | Safe ⓘ |
| Fluoride | 25 | 0% | 76% · 24% · 0% | Moderate | Low |
| Nitrate | 3 | 0% | 100% · 0% · 0% | Low | Low ⓘ |
| E. coli | 1 | 0% | 100% · 0% · 0% | Low | Safe ⓘ |
| PFBS ⓘ municipal | 4 | — | 100% · 0% · 0% | Low | Safe ⓘ |
| Sodium | 52 | — | — | Moderate | Low |
| Hardness | 37 | — | — | Moderate | Low |
| Lead | 1 | 0% | 100% · 0% · 0% | Low | Safe ⓘ |
| pH | 6 | — | — | Low | Low ⓘ |
| Arsenic | 1 | 0% | 100% · 0% · 0% | 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.
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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