Well Water in Northampton County: What to Test and Why

Moderate Risk
Testing Recommended 10136 samples analyzed
Top Concerns in This County
Iron Pfos Arsenic

Why This Happens Here

Groundwater in Northampton County contains arsenic, iron, and PFOS at levels that exceed EPA health standards. These contaminants are a real concern and well owners should test their water to know what they are drinking.

The sandy and clay layers of the coastal plain aquifer naturally contain arsenic in some areas, which dissolves into groundwater over time. Iron comes from minerals in the rock and soil. PFOS is a human-made chemical that has contaminated groundwater in scattered locations, likely from industrial use or disposal sites in the county or nearby areas.

Groundwater in this county is soft with moderate iron as the main mineral character. Iron dissolves from the rock and sediment that make up the aquifer in this region. These characteristics show up in many wells across the county, though levels and types of contamination vary from one well to another.

What This Means for You

Wells in Northampton County sometimes have arsenic, iron, and PFOS above EPA health limits. Arsenic builds up in your body over time and can cause serious health problems like cancer and damage to your heart and kidneys. Iron at elevated levels does not pose direct health risks but indicates other concerns in the water. PFOS is a chemical that can affect your immune system and liver.

The iron in county wells creates practical problems even at moderate levels. You may see orange or brown stains on your sink, shower, and laundry. Iron can leave a metallic taste in your water and create an unpleasant smell. The good news is that wells in this county are generally soft, so you should not have issues with scale buildup on pipes and appliances.

We recommend testing your well with a comprehensive panel because multiple contaminants exceed health standards in this county. Every well is different, and your water could have higher or lower levels than what is common here. Testing is the only way to know what is actually in your well so you can treat it properly. A comprehensive metals panel runs between two hundred and four hundred dollars. Arsenic and PFOS can be removed with specific filters, and iron responds well to treatment systems.

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
Arsenic 3 50% 67% · 0% · 33% Low High
Iron 13 33% 46% · 23% · 31% Low High
PFOS ⓘ municipal 12 25% 75% · 0% · 25% Low High
Lead 4 0% 50% · 50% · 0% Low Low
Nitrite 3 0% 100% · 0% · 0% Low Low
PFOA ⓘ municipal 12 0% 100% · 0% · 0% Low Safe
PFBS ⓘ municipal 12 100% · 0% · 0% Low Safe
Fecal Coliform 1 0% 100% · 0% · 0% Low Safe
Sodium 25 Moderate Low
Total Coliform 1 0% 100% · 0% · 0% Low Safe
Hardness 25 Moderate Low
Nitrate 1 0% 100% · 0% · 0% Low Safe
Fluoride 1 0% 100% · 0% · 0% Low Safe
Manganese 1 0% 100% · 0% · 0% Low Safe
pH 12 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.

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Population Health Context

Population-level CDC data. Not individual risk prediction.

8.4%
Cancer Prevalence
(state avg: 6.7%)
5.1%
Kidney Disease Rate
(state avg: 3.4%)

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