Well Water in Wilson County: What to Test and Why

Moderate Risk
Testing Recommended 42 well tests on record
Top Concerns in This County
Iron Manganese Radon

Why This Happens Here

Groundwater in Wilson County contains iron and arsenic at levels high enough to exceed EPA health standards. Iron reaches very high concentrations, while arsenic is present in amounts that warrant attention from well owners.

These contaminants come from the rock layers beneath the county. Iron occurs naturally in the sand, clay, and gravel that make up the local aquifer system. Arsenic also occurs naturally in these underground layers and can dissolve into groundwater as it moves through them.

Groundwater in this county is notably high in iron, which is the dominant mineral affecting water character. The sand and clay layers here naturally release iron into water that filters through them. This iron-rich water is a common condition across many wells throughout Wilson County.

What This Means for You

Wells in Wilson County commonly have arsenic and iron at levels that exceed EPA health standards. Arsenic can cause skin problems and increase cancer risk over many years of drinking it. Iron at high levels in drinking water does not pose a direct health threat, but arsenic exposure is a genuine concern for families using wells in this area.

The iron in county wells creates visible staining on sinks, toilets, and laundry. You may notice rust-colored water coming from the tap or a metallic taste in your drinking water. These problems are annoying but do not affect your health directly.

We recommend testing your well water with a comprehensive metals panel to find out exactly what is in your water. Every well is different, and your water could have higher or lower levels than what is common in the county. Testing is the only way to know what you are actually dealing with so you can treat it properly. A comprehensive panel costs between $200 and $400 and can identify what needs to be removed from your specific well.

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
Iron 28 64%
Moderate High
Manganese 23 43%
Moderate High
Arsenic 2 0%
Low Safe
Chloride 33 0%
Moderate Low
Fluoride 33 0%
Moderate Low
HFPO-DA (GenX) ⓘ municipal 14 0%
Low Safe
Lead 2 0%
Low Low
Nitrate 32 0%
Moderate Low
Nitrite 3 0%
Low Safe
PFHxS ⓘ municipal 14 0%
Low Safe
PFNA ⓘ municipal 14 0%
Low Safe
PFOA ⓘ municipal 14 0%
Low Safe
PFOS ⓘ municipal 14 0%
Low Safe
Radon 1 0%
Low Low
Sulfate 32 0%
Moderate Low
Uranium 2 0%
Low Safe
pH 26
Moderate Low
Sodium 16
Moderate Low
E. coli 1* 0%
Low Safe
Total Coliform 1* 0%
Low Safe
Hardness 33
Moderate Low
PFBS ⓘ municipal 14
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.
* Microbial contaminants (E. coli, coliform) reflect only samples from the last 10 years.

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.

7.0%
Cancer Prevalence
(state avg: 6.7%)
4.2%
Kidney Disease Rate
(state avg: 3.4%)

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