Well Water in Otsego County: What to Test and Why

High Risk
Testing Strongly Recommended 4963 samples analyzed
Top Concerns in This County
Radon Iron Sulfate

Why This Happens Here

Otsego County well water contains radon, iron, sulfate, and chloride at levels that exceed EPA health standards. These contaminants are present at concentrations serious enough to warrant testing and potential treatment.

The carbonate rock beneath this county naturally releases iron and sulfate as water moves through it over time. Radon seeps into groundwater from the natural decay of uranium in the bedrock. Chloride can enter from road salt, septic systems, and natural mineral deposits in the rock layers.

Groundwater in this county is moderately hard, driven by calcium and magnesium released from the limestone bedrock as water dissolves the rock slowly. Iron is also present at moderate levels from the same geologic source. These mineral characteristics appear across many wells throughout Otsego County.

What This Means for You

Wells in Otsego County show chloride, iron, radon, and sulfate at levels that exceed EPA health standards. Chloride at high levels can harm people with high blood pressure or heart disease. Iron itself is not a health threat, but radon is a radioactive gas that increases lung cancer risk. Sulfate in drinking water can cause digestive problems, especially in infants and people with certain illnesses.

The moderately hard water in this county's wells leaves rust-colored or orange stains on fixtures and laundry. You may notice scale buildup on faucets and inside pipes. Hard water can shorten the lifespan of water heaters and dishwashers. Some wells have a metallic or sulfur taste.

We recommend a comprehensive metals and radon panel since multiple contaminants exceed standards in county wells. Your well is unique and could have higher or lower levels than what is common here. Testing costs between $200 and $400 and is the only way to know what actually needs treatment. Radon mitigation systems and water softeners can address these concerns once you know your results.

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
Radon 17 35% 41% · 24% · 35% Moderate High
Iron 26 28% 50% · 23% · 27% Moderate High
Sulfate 42 12% 88% · 0% · 12% Moderate Moderate
Chloride 56 4% 96% · 0% · 4% Moderate Moderate
Elevated concentration, not % above limit
Uranium 14 0% 100% · 0% · 0% Low Low
PFOA ⓘ municipal 8 0% 100% · 0% · 0% Low Safe
PFHxS ⓘ municipal 8 0% 100% · 0% · 0% Low Safe
PFOS ⓘ municipal 8 0% 100% · 0% · 0% Low Safe
PFNA ⓘ municipal 8 0% 100% · 0% · 0% Low Safe
HFPO-DA (GenX) ⓘ municipal 8 0% 100% · 0% · 0% Low Safe
PFBS ⓘ municipal 8 100% · 0% · 0% Low Safe
Manganese 1 0% 100% · 0% · 0% Low Safe
Nitrate 1 0% 100% · 0% · 0% Low Safe
Arsenic 1 0% 100% · 0% · 0% Low Safe
Nitrite 1 0% 100% · 0% · 0% Low Safe
Lead 1 0% 100% · 0% · 0% Low Safe
Fecal Coliform 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 28 Moderate Low
Sodium 60 Moderate Low
Fluoride 1 0% 100% · 0% · 0% Low Safe
pH 8 Low 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.

Order a Tap Score Test →

Population Health Context

Population-level CDC data. Not individual risk prediction.

7.8%
Cancer Prevalence
(state avg: 6.7%)

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