Well Water in Cumberland County: What to Test and Why

High Risk
Testing Strongly Recommended 119585 samples analyzed
Top Concerns in This County
Iron Radon Lead

Why This Happens Here

Your water comes from old limestone and other carbonate rock layers deep underground. These rocks sit in ridges and valleys across Cumberland County. Water fills the cracks and hollow spaces in the rock where your well taps in. This is where your well draws its supply.

Road salt from highways like I-81 seeps down into the groundwater during winter. Radon gas forms naturally inside the carbonate rock and dissolves into the water as it sits in the cracks. Iron comes straight from the minerals packed inside the limestone itself. Lead enters through old metal pipes in some wells.

Your water is extremely hard with very high amounts of iron, sodium, and sulfate. This means white crusty buildup will form on pipes, fixtures, and water heaters. You will see orange and brown staining on sinks, toilets, and laundry. A certified lab test tells you exactly what you are dealing with, and treatment systems exist for each problem.

What This Means for You

Your well water in Cumberland County exceeds EPA health standards for lead, radon, iron, and sulfate. Lead is the most urgent concern because it harms your brain and kidneys, especially in children. Radon is also a serious health risk. Your water shows extreme contamination across multiple contaminants, which means your family needs testing and treatment right away.

Long-term exposure to lead damages brain development in children and raises blood pressure in adults. Radon breathed in from shower steam increases lung cancer risk. The high iron, sodium, and sulfate levels will stain your sinks orange and brown, leave white crusty buildup on pipes, and give your water a bitter or salty taste. Your water is extremely hard, which damages appliances and shortens their lifespan.

Get your well tested by a state-certified lab immediately. A basic health screen runs fifty to one hundred dollars; a comprehensive metals and radon panel runs two hundred to four hundred dollars. A whole-house treatment system combining radon removal, lead filtration, and iron reduction can address these serious problems.

Contaminant Detection Data

Contaminant Samples % Above MCL Distribution Confidence Risk
Lead 2 100% 50% · 0% · 50% Low High
Iron 10 56% 40% · 10% · 50% Low High
Radon 29 52% 38% · 10% · 52% Moderate High
Sulfate 76 8% 91% · 1% · 8% Moderate Moderate
Chloride 95 1% 94% · 5% · 1% Moderate Low
Uranium 14 0% 100% · 0% · 0% Low Low
Fluoride 3 0% 100% · 0% · 0% Low Low
pH 22 Moderate 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
Arsenic 1 0% 100% · 0% · 0% Low Safe
Hardness 1 Low Safe
Total Coliform 1 0% 100% · 0% · 0% Low Safe
E. coli 1 0% 100% · 0% · 0% Low Safe
Sodium 75 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.

Population Health Context

Population-level CDC data. Not individual risk prediction.

5.3%
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