Well Water in Carroll County: What to Test and Why

High Risk
Testing Strongly Recommended 47970 samples analyzed
Top Concerns in This County
Manganese Iron Sulfate

Why This Happens Here

Your well water comes from old sandstone and shale rock that sits hundreds of feet underground. These rocks formed from ancient seafloor sediment and now hold water in tiny cracks and spaces between the rock layers. The water moves slowly through these gaps, picking up minerals as it goes.

Iron and manganese dissolve out of the rock itself when water sits in contact with it underground. Sulfate comes from sulfide minerals in the shale that break down over time. These three contaminants exceed EPA health standards in Carroll County because the rock chemistry here naturally releases them into the water.

Your water is extremely hard and full of dissolved minerals. You will see orange or brown stains on sinks and laundry from the high iron content. The water tastes salty from sodium and bitter from sulfate, and it will leave white scale buildup in pipes and on fixtures.

What This Means for You

Iron, manganese, and sulfate all exceed EPA health standards in Carroll County well water. This is a high-urgency situation that demands immediate action. Your well water contains these contaminants at levels that are unsafe for your family to drink without treatment.

Long-term exposure to manganese can harm your brain and nervous system, especially in children. Iron at these extreme levels will stain your sinks, toilets, and laundry orange or brown. The water will taste metallic and salty from the high sodium and sulfate. Your pipes and water heater will develop scale buildup that reduces water flow and shortens their lifespan.

Get your well tested by a state-certified lab right away—a comprehensive mineral and metals panel costs $200–$400. Contact the Carroll County Health Department for a list of certified labs near you. A whole-house iron and manganese removal system paired with a water softener can treat these problems.

Contaminant Detection Data

Contaminant Samples % Above MCL Distribution Confidence Risk
Manganese 24 91% 4% · 8% · 88% Moderate High
Iron 71 53% 38% · 10% · 52% Moderate High
Sulfate 58 19% 69% · 12% · 19% Moderate High
Arsenic 4 0% 100% · 0% · 0% Low Low
Chloride 43 0% 91% · 9% · 0% Moderate Low
Fluoride 22 0% 100% · 0% · 0% Moderate Low
Sodium 48 Moderate Low
pH 9 Low Low
Nitrite 1 0% 100% · 0% · 0% Low Safe
Nitrate 4 Low Low
Nitrate 1 0% 100% · 0% · 0% Low Safe
Lead 1 0% 100% · 0% · 0% Low Safe
Hardness 37 Moderate Low
Fecal Coliform 1 Low Safe
E. coli 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.

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