How Sample Depth and Well Type Influence Expectations of Nitrate Levels
The U.S. Geological Survey collected samples from 17 wells in Plymouth County’s 112SRFD aquifer, at depths ranging from 8 to 166 feet. Shallower wells often interact more with surface water and near-surface soil, where nitrogen compounds from agriculture or natural sources may accumulate, potentially raising nitrate levels. Deeper wells may draw from more isolated groundwater with different nitrate exposure. Therefore, your well depth can influence the likelihood of nitrate presence, but this range alone does not predict your home's water quality. Individual well testing is necessary to determine your specific nitrate concentration.
Interpreting 'Detected,' Median, and Range in Government Sampling Records
In the Plymouth County 112SRFD aquifer samples, inorganic nitrogen (nitrate plus nitrite) was detected in 27 out of 35 test results. The median concentration was 1.14 milligrams per liter (mg/L), with values ranging from 0.02 to 4.03 mg/L. 'Detected' means the measurement instrument found some nitrate presence—this is not a violation or health warning but simply a recorded value. The median represents the middle value of all samples, providing a typical concentration found in the area. The range shows the lowest to highest measured nitrate levels but does not mean any well exceeded safety thresholds. In fact, none of these samples surpassed federal nitrate limits, which helps frame the area's water quality but is not a substitute for testing your own supply.
Household Fixtures and Water Uses Most Affected by Nitrate
Nitrate primarily impacts drinking and cooking water, as it is a concern for ingestion rather than external contact. Appliances that supply water for consumption, such as kitchen faucets and ice makers, are most relevant. Other household uses, such as bathing or laundry, are less directly affected by nitrate. Understanding this helps prioritize where to focus testing and potential treatment in your home to protect family health.
Comparing Plymouth County’s Nitrate Record with Neighboring Areas Without Overreading Data
When looking at nitrate data from Plymouth County’s 112SRFD aquifer, it may be tempting to compare figures with nearby counties. However, factors such as differing land use, climate, and aquifer characteristics affect nitrate presence, so direct comparisons can be misleading. The moderate nitrate levels here, with none above federal limits, indicate generally stable conditions but must not be assumed to apply elsewhere. Local sampling and well-specific testing remain essential to understand your water.
Key Information to Note Before Seeking Water Treatment Advice
Before asking for treatment options, write down these details about your water and household:
- The depth of your well
- Your well’s water test results, especially for nitrate and nitrite levels
- The number of people in your household and typical daily water usage
- Which fixtures provide water for cooking and drinking
- Any history of taste, odor, or staining issues
This information shapes appropriate treatment considerations tailored to your situation.
What Water Test to Order and When Nitrate Levels Confirm Treatment Need
The definitive step is to order a laboratory test that specifically measures nitrate and nitrite concentrations in your well or tap water. If results show nitrate levels approaching or exceeding federal health guidance, treatment solutions become relevant. One effective option documented for reducing nitrate and nitrite in residential well water is the C-Series Nitrate & Nitrite (Well) Filter, which ships ready to configure for household use. Testing your own water clears up uncertainty and supports informed decisions about treatment.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2019-09-05. 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 112SRFD aquifer (Plymouth County): 35 results from 17 wells, median 1.14 mg/L, range 0.02-4.03 mg/L; none above any federal threshold