Nitrate in Plymouth County: Understanding Area Sampling and Treatment Options for Your Home
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WSP Whole House Nitrate Reduction System - Well Water, Nitrite Removal
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What Do 'Detected', 'Median', and 'Range' Mean in the Sampling Record?
The U.S. Geological Survey sampled groundwater from 17 wells in Plymouth County’s aquifer 112SRFD, gathering 35 nitrate and nitrite measurements between 2010 and 2019. Within these samples, nitrate was detected in 27 cases and was below the reporting limit in 8. The median nitrate concentration was 1.14 milligrams per liter (mg/L), with results ranging from as low as 0.02 to as high as 4.03 mg/L. These figures describe the presence and variability of nitrate in the area’s groundwater but do not represent any single well or household water supply.
Does Plumbing Material or Age Affect Nitrate Levels?
Nitrate levels measured in water sampling reflect source water quality from the aquifer, not changes caused by plumbing materials or system age. Unlike metals that may leach from pipes, nitrate is a naturally occurring compound influenced mainly by environmental factors such as agricultural runoff and soil characteristics. Therefore, nitrate concentration in water samples is independent of household plumbing components.
What Does a Certified Laboratory Test for Nitrate Report?
A certified laboratory test for nitrate/inorganic nitrogen provides a precise concentration measurement reported in mg/L. It distinguishes dissolved nitrate and nitrite forms combined as inorganic nitrogen. The report specifies the test date, results, and detection limits. Reading such a report tells you your water’s nitrate level but requires interpretation in the context of federal and local guidelines to determine if treatment is advisable.
How Does the Fleck Nitrate & Nitrite (Well) Filter Address Nitrate?
This treatment system uses proven filtration technology designed to reduce nitrate and nitrite concentrations in residential well water. It operates by selectively removing these inorganic nitrogen compounds, improving water quality for household use. The system ships ready to configure with your plumbing setup and is intended to supplement existing equipment that may no longer keep up with nitrate levels in your water supply.
How Many Samples and Wells Support These Figures?
The U.S. Geological Survey’s data originates from 35 samples taken over nearly a decade from 17 different wells spanning depths of 8 to 166 feet. While this sample size provides a meaningful overview of nitrate concentrations in Plymouth County’s aquifer 112SRFD, it remains a limited subset. Groundwater quality can vary by location and over time, making direct assumptions for any individual well’s nitrate levels uncertain without a site-specific test.
Why Are Aesthetic Secondary Standards Different from Health-Based Limits?
For nitrate in drinking water, federal health-based standards exist to protect against risks such as methemoglobinemia in infants. The sampling record showed no nitrate result above these federal thresholds. Secondary standards typically address taste, odor, or staining, but nitrate is regulated primarily for health reasons. Detected nitrate below health-based limits is not a violation or unsafe but may still prompt some households to seek treatment for peace of mind or taste preferences.
The Essential Test to Confirm Your Water’s Nitrate Level
To know your household water’s actual nitrate concentration, order a certified laboratory test specifying nitrate and nitrite analysis. A result compared to federal health-based criteria will clarify whether additional treatment is needed. If nitrate is present in concentrations that concern you, a Fleck Nitrate & Nitrite (Well) Filter can help manage these levels effectively as part of your water treatment approach.
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