Well Water in Adams County: What to Test and Why

High Risk
Testing Strongly Recommended 9701 samples analyzed
Top Concerns in This County
Radon Manganese Iron

Why This Happens Here

Groundwater in Adams County contains radon, manganese, and iron that well owners should know about. These contaminants exceed EPA health standards and require attention.

The crystalline bedrock beneath Adams County naturally releases these metals as groundwater slowly moves through tiny cracks and fractures in the rock. Radon gas forms inside the rock itself and dissolves into water as it passes through. Road salt from winter highway treatments also contributes some contamination in areas near major roads.

Groundwater in this county is soft with moderate iron as the main mineral characteristic. Iron comes directly from the minerals in the crystalline bedrock as water breaks them down over time. These characteristics show up in most wells across the county.

What This Means for You

Wells in Adams County commonly contain iron, manganese, PFOA, PFOS, and radon at levels exceeding EPA health standards. Radon is a radioactive gas that increases lung cancer risk with long-term exposure. Manganese can harm brain development in children and affect the nervous system. PFOA and PFOS are human-made chemicals linked to serious health problems including liver damage, thyroid disease, and immune system effects. Iron and sulfate do not pose direct health risks at the levels found here.

County well water shows moderate iron levels that cause orange or reddish-brown stains on sinks, toilets, and laundry. You may notice a metallic or sulfurous taste or smell in your water. The water in this county is soft, so you will not see heavy scale buildup in pipes and appliances like you would in harder water areas.

We recommend testing your well through a certified lab because every well is different and your water may have higher or lower levels than what is common in the county. A comprehensive metals and radon panel runs between two hundred and four hundred dollars and is the only way to know what is actually in your water so it can be properly treated. Testing is the first step to protecting your family. Aeration systems and activated carbon filters can remove radon and reduce iron staining.

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 16 62% 31% · 6% · 62% Moderate High
Manganese 6 40% 33% · 33% · 33% Low High
Iron 73 38% 48% · 15% · 37% Moderate High
PFOS ⓘ municipal 283 22% 67% · 11% · 22% High High
PFOA ⓘ municipal 283 11% 74% · 15% · 11% High Moderate
Sulfate 59 5% 95% · 0% · 5% Moderate Moderate
Chloride 25 0% 96% · 4% · 0% Moderate Low
Fluoride 2 0% 100% · 0% · 0% Low Low
Uranium 15 0% 93% · 7% · 0% Moderate Low
PFNA ⓘ municipal 38 0% 100% · 0% · 0% Moderate Safe
PFHxS ⓘ municipal 38 0% 97% · 3% · 0% Moderate Low
HFPO-DA (GenX) ⓘ municipal 282 0% 100% · 0% · 0% High Safe
Hardness 16 Moderate Low
PFBS ⓘ municipal 282 100% · 0% · 0% High Low
Total Coliform 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
Sodium 58 Moderate Low
pH 12 Low Low
Arsenic 1 0% 100% · 0% · 0% Low Safe
Lead 1 0% 100% · 0% · 0% Low Safe
Nitrate 1 0% 100% · 0% · 0% Low Safe
Nitrite 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.

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.

8.0%
Cancer Prevalence
(state avg: 7.0%)

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