Well Water in Charles City County: What to Test and Why

Moderate Risk
Testing Recommended 11114 samples analyzed
Top Concerns in This County
Manganese Radon

Why This Happens Here

Groundwater in Charles City County contains manganese, radon, and arsenic. Manganese and radon exceed EPA health standards in this area, so well owners should test their water and consider treatment options.

These contaminants come from natural sources in the rock and soil underground. Manganese and iron dissolve into groundwater where oxygen levels are low in the aquifer. Radon is a radioactive gas that seeps up from rocks deeper underground. Arsenic occurs naturally in some clay and sand layers in the aquifer system.

Groundwater in this county is soft and notable mainly for elevated sodium. The sandy and clay layers of the Northern Atlantic Coastal Plain aquifer allow water to pick up sodium as it moves through the ground. Water that sits underground for a long time in these sediments tends to accumulate more dissolved minerals. Elevated sodium is a common finding across wells in this county.

What This Means for You

Wells in Charles City County sometimes contain manganese and radon at levels above EPA health standards. Manganese can affect your nervous system if you drink water with elevated amounts over time, and it is especially concerning for children. Radon is a radioactive gas that builds up in your body when you breathe it in or swallow it in water, and it increases your risk of lung cancer and stomach cancer.

The high sodium levels in county well water mean that water may taste salty or brackish. If you have heart problems or high blood pressure, extra sodium in your drinking water can make your condition worse. The good news is that wells here are soft, so you won't see the white scale buildup on faucets and fixtures that hard water causes, and your water heater should not wear out faster than normal.

We recommend testing your well water with a comprehensive panel to find out what is actually in your water, since every well is different and yours could have higher or lower levels than what is common in the county. Testing is the only way to know what needs treatment. A comprehensive metals and minerals panel typically costs between two hundred and four hundred dollars. Treatment options like reverse osmosis systems or activated carbon filters can remove many of these contaminants.

Not sure if your well is affected? Get certified results in 5–7 days.

Test Your Well Water with Tap Score →

Contaminant Detection Data

Contaminant Samples % Above MCL Distribution Confidence Risk
Manganese 27 48% 48% · 4% · 48% Moderate High
Radon 3 33% 33% · 33% · 33% Low High
Fluoride 19 0% 90% · 10% · 0% Moderate Low
Chloride 34 0% 97% · 3% · 0% Moderate Low
Sulfate 32 0% 100% · 0% · 0% Moderate Low
Arsenic 18 0% 100% · 0% · 0% Moderate Low
Lead 14 0% 93% · 7% · 0% Low Low
Nitrate 1 0% 100% · 0% · 0% Low Safe
E. coli 1 0% 100% · 0% · 0% Low Safe
Total Coliform 1 0% 100% · 0% · 0% Low Safe
Hardness 46 Moderate Low
Uranium 1 0% 100% · 0% · 0% Low Safe
Sodium 33 Moderate Low
pH 15 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.

Data shows potential risk — a certified test confirms whether your water is affected.

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Population Health Context

Population-level CDC data. Not individual risk prediction.

5.7%
Cancer Prevalence
(state avg: 6.7%)

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