Well Water in Morris County: What to Test and Why

Low Risk
Informational — Low Risk Detected 113 well tests on record
Top Concerns in This County
Iron

Why This Happens Here

Groundwater in Morris County contains iron, manganese, and nitrate at levels that exceed EPA health standards. These contaminants are present at moderate to high concentrations and warrant attention from well owners.

Iron and manganese come from the rock layers underground in this area. As water moves slowly through the rock, it dissolves these metals, which are naturally present in the soil and stone. Nitrate typically enters groundwater from agricultural activities and septic systems on the land surface above.

Groundwater in this county is soft with high sodium content, driven by the sodium dissolved from the local rock. The water picks up these minerals as it travels through the underground layers that make up Morris County's aquifer. High sodium levels are found in most wells across the county, while iron and manganese concentrations vary from well to well depending on depth and location.

What This Means for You

Wells in Morris County commonly have iron, manganese, and nitrate at levels above EPA health standards. Iron and manganese at elevated concentrations can cause health problems over time, especially for babies and young children. Nitrate is a concern for infants and pregnant women, as it interferes with how the body carries oxygen. These contaminants need attention even though they don't always cause immediate symptoms.

The high sodium content in county well water can affect how your water tastes and may be a concern for people on restricted diets. Iron and manganese create staining on fixtures, laundry, and dishes, and can make water taste metallic or look cloudy or discolored. Your well water in this county is soft, so you won't have scale buildup problems that plague harder water areas.

We recommend getting your well tested to find out exactly what is in your water, since every well is different and yours may have much higher or lower levels than what is common here. A comprehensive metals and minerals panel costs between two hundred and four hundred dollars and will show you what you're actually dealing with. Testing is the only way to know if you need treatment like an iron filter or a whole-house system to address these concerns.

Not sure if your well is affected? Get certified results in 5–7 days.

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Contaminant Detection Data

Contaminant Samples % Above MCL Distribution Confidence Risk
Iron 44 11%
Moderate Moderate
Manganese 21 5%
Moderate Moderate
Elevated concentration, not % above limit
Nitrate 28 4%
Moderate Moderate
Elevated concentration, not % above limit
Arsenic 16 0%
Moderate Low
Chloride 24 0%
Moderate Low
Fluoride 105 0%
High Low
HFPO-DA (GenX) ⓘ municipal 4 0%
Low Safe
Lead 16 0%
Moderate Low
PFHxS ⓘ municipal 4 0%
Low Safe
PFNA ⓘ municipal 4 0%
Low Safe
PFOA ⓘ municipal 4 0%
Low Safe
PFOS ⓘ municipal 4 0%
Low Safe
Sulfate 24 0%
Moderate Low
Uranium 3 0%
Low Safe
Sodium 24
Moderate Low
pH 24
Moderate Low
PFBS ⓘ municipal 4
Low Safe
Hardness 24
Moderate 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.
* 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.

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Population Health Context

Population-level CDC data. Not individual risk prediction.

5.8%
Cancer Prevalence
(state avg: 6.1%)

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