If the water from your household taps in Sussex County, Delaware, sometimes tastes slightly earthy or causes unusual water color, nitrate might be a factor to consider. Knowing what certified lab tests reveal about nitrate levels in your area’s groundwater can clarify the picture behind these observations.
What a Certified Laboratory Test Reports and How to Read It
Certified water tests for nitrate (measured as inorganic nitrogen combining nitrate and nitrite) typically report concentrations in milligrams per liter (mg/L). In Sussex County’s aquifer 121BVDM, government sampling from 17 wells over more than a decade found nitrate ranging from 0.045 mg/L up to 46.6 mg/L, with a median near 13.1 mg/L. This data means nitrate is commonly detected, but the actual level in your own well can differ significantly. Only a test of your household water, performed by an accredited lab, can establish your specific nitrate concentration.
How Many Samples and Wells Stand Behind the Figures, and What a Small Sample Means
The available data comes from 53 samples collected between 2011 and 2024 across 17 different wells ranging in depth from 11 to 87 feet. This sampling provides a localized picture of nitrate presence but relies on a relatively small number of wells. Because groundwater conditions can vary widely even within an aquifer, this means your well water nitrate levels could be higher or lower than the area median. The sample size informs regional trends but cannot substitute for specific local testing if you want accuracy for treatment decisions.
The Role of Plumbing Material and Age, Separate From the Source Water
While source water nitrate concentrations reflect natural and agricultural influences on groundwater, the plumbing inside your home can affect how water quality manifests at the tap. Plumbing materials or older pipes might influence taste or appearance independently, but they do not create or remove nitrate. Therefore, nitrate levels reported from certified lab tests represent the raw source water before household plumbing effects, highlighting the importance of sample collection methods when testing your home water.
What Questions a Commercial or Industrial Operator Adds That a Household Does Not
Commercial or industrial water users often evaluate nitrate in the context of large-volume processing, regulatory compliance, and impact on production systems. Their questions can include what treatment capacity matches peak flow rates and how nitrate levels fluctuate seasonally to prevent equipment damage. In contrast, household water concerns focus more on health-based thresholds and maintaining safe water for consumption, emphasizing treatment systems that can handle typical domestic usage without excessive maintenance complexity.
What Happens When This Problem Is Left Untreated for Years, Stated Without Exaggeration
When nitrate levels above the federal Maximum Contaminant Level (MCL) of 10 mg/L persist untreated in household water, there can be health concerns, especially for infants and pregnant women. Chronic exposure to elevated nitrate may increase risks related to blood oxygen transport issues. Physically, nitrate does not cause water color, smell, or scale, so these effects are unrelated. Addressing nitrate through appropriate filtration technology can reduce this risk without impacting other water properties.
For residential households in Sussex County dealing with nitrates in the 121BVDM aquifer, choosing the right equipment involves confirming your well water nitrate concentration through testing and considering typical household demand. The Fleck Nitrate & Nitrite (Well) Filter system ships ready to configure and effectively reduces nitrate and nitrite levels to safer ranges, aligning with both health guidelines and daily water needs.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2024-08-27. These figures describe groundwater sampled in this area. They are not a test of any individual private well - only a test of that well can establish its own water.
On record: U.S. Geological Survey sampling of Inorganic nitrogen (nitrate and nitrite) in the 121BVDM aquifer (Sussex County): 53 results from 17 wells, median 13.1 mg/L, range 0.045-46.6 mg/L; 34 above a health-based federal MCL (federal MCL 10.0 mg/L)
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