Pike County's groundwater comes from old mixed rock buried deep underground. This rock is not soft limestone like some neighboring areas have. Instead it is hard, broken stone that water slowly moves through over many years.
The three main contaminants here come straight from the rock itself. Radon is a gas that forms naturally inside the stone and dissolves into the water as it moves down. Arsenic sits naturally in this old mixed rock. Sulfate forms when water sits in contact with certain minerals in the stone for a long time.
Your water is very hard and salty. The rock dissolves minerals like sodium and sulfate into the water, leaving heavy white scale on fixtures and in pipes. You will see reddish-brown stains from iron in sinks and tubs. This hard water makes soap work poorly and shortens the life of water heaters.
Arsenic, radon, and sulfate exceed EPA health standards in Pike County wells. Arsenic is the primary concern because it builds up in your body over years. Radon is a radioactive gas that comes from the bedrock and dissolves into groundwater. Sulfate also shows up at levels that warrant attention for your family's health.
Long-term exposure to arsenic can cause skin problems, nerve damage, and serious illness. Radon breathed in over time raises your risk of lung cancer. The mineral data shows your area has very high sodium, hardness, and sulfate levels. This creates heavy white scale buildup on fixtures and in pipes, plus brown staining from iron and a rotten-egg smell from sulfate.
Get a certified lab test from a state-approved lab. A basic health screen for bacteria and nitrate runs $50–100. A comprehensive metals and radon panel runs $200–400 and will tell you exactly what's in your well. An aeration system or other treatment can address radon and sulfate once you know your levels.
| Contaminant | Samples ⓘ | % Above MCL ⓘ | Distribution ⓘ | Confidence ⓘ | Risk ⓘ |
|---|---|---|---|---|---|
| Radon | 56 | 55% | 34% · 11% · 55% | Moderate | High ⓘ |
| Arsenic | 62 | 5% | 87% · 8% · 5% | Moderate | Moderate |
| Sulfate | 66 | 3% | 96% · 2% · 3% | Moderate | Moderate |
| Chloride | 93 | 2% | 94% · 4% · 2% | Moderate | Low |
| Iron | 6 | 0% | 100% · 0% · 0% | Low | Low |
| Uranium | 57 | 0% | 100% · 0% · 0% | Moderate | Low |
| PFOA | 2 | 0% | 100% · 0% · 0% | Low | Low |
| Manganese | 1 | 0% | 100% · 0% · 0% | Low | Safe |
| Nitrate | 1 | 0% | 100% · 0% · 0% | Low | Safe |
| Nitrite | 1 | 0% | 100% · 0% · 0% | Low | Safe |
| Fecal Coliform | 1 | — | — | Low | Safe |
| Total Coliform | 1 | 0% | 100% · 0% · 0% | Low | Safe |
| Lead | 1 | 0% | 100% · 0% · 0% | Low | Safe |
| E. coli | 1 | 0% | 100% · 0% · 0% | Low | Safe |
| Nitrate | 3 | — | — | Low | Low |
| Hardness | 21 | — | — | Moderate | Low |
| Sodium | 67 | — | — | Moderate | Low |
| pH | 12 | — | — | Low | Low |
| Fluoride | 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.
Population-level CDC data. Not individual risk prediction.
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