Well Water in Greene County: What to Test and Why

Moderate Risk
Testing Recommended 2541 samples analyzed
Top Concerns in This County
Manganese Iron

Why This Happens Here

Groundwater in Greene County contains iron, manganese, and arsenic. Iron and manganese are present at levels that exceed EPA health standards, so well owners should test their water and consider treatment options.

These metals come from the rock layers beneath Greene County. The Valley and Ridge bedrock here contains iron-bearing minerals that dissolve slowly into groundwater as water moves through cracks and pores in the stone. Manganese enters the same way. Arsenic also occurs naturally in some of these rock formations. This is a common pattern in areas with older, mineral-rich stone.

Groundwater in this county is soft, with iron being the main mineral that stands out. Iron dissolves from the surrounding rock as water filters down through the aquifer. Water softness here means calcium and magnesium are low, which is typical for this type of bedrock. Most wells in Greene County show this soft water character, though iron levels vary from well to well.

What This Means for You

Wells in Greene County sometimes have iron and manganese at levels that exceed EPA health standards. Iron can cause problems with your blood and organs if you drink too much over a long time. Manganese can affect your brain and nervous system, especially in children, when consumed at high levels.

Iron in county well water often leaves red or brown stains on sinks, toilets, and laundry. It can make your water taste metallic and look cloudy or discolored. Manganese can turn water dark or leave dark stains. The good news is that Greene County wells are soft, so you probably won't see the scale buildup and appliance damage that happens in harder water areas.

We recommend testing your well to find out what you actually have. Every well is different, and yours could have higher or lower levels than what we see across the county. A comprehensive metals panel costs between $200 and $400 and will show exactly what needs attention. Iron and manganese can be removed with aeration systems, filters, or other treatment methods once you know your levels.

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
Manganese 20 60% 35% · 5% · 60% Moderate High
Iron 5 20% 40% · 40% · 20% Low High
HFPO-DA (GenX) ⓘ municipal 3 0% 100% · 0% · 0% Low Safe
PFNA ⓘ municipal 3 0% 100% · 0% · 0% Low Safe
PFHxS ⓘ municipal 3 0% 100% · 0% · 0% Low Safe
Uranium 4 0% 100% · 0% · 0% Low Low
Chloride 27 0% 100% · 0% · 0% Moderate Low
Sulfate 19 0% 100% · 0% · 0% Moderate Low
PFOS ⓘ municipal 3 0% 100% · 0% · 0% Low Safe
PFOA ⓘ municipal 3 0% 100% · 0% · 0% Low Safe
Chloride 27 0% 100% · 0% · 0% Moderate Low
Sulfate 19 0% 100% · 0% · 0% Moderate Low
Uranium 4 0% 100% · 0% · 0% Low Low
Fluoride 11 0% 100% · 0% · 0% Low Low
Nitrite 6 0% 83% · 17% · 0% Low Low
Nitrate 25 0% 100% · 0% · 0% Moderate Low
Arsenic 3 0% 100% · 0% · 0% Low Low
Lead 4 0% 100% · 0% · 0% Low Low
PFBS ⓘ municipal 3 100% · 0% · 0% Low Safe
pH 8 Low Low
Sodium 29 Moderate Low
E. coli 1 0% 100% · 0% · 0% Low Safe
Hardness 18 Moderate Low
Fecal Coliform 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.

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