Samples and Wells: The Basis of Navajo County's Nitrate Data
It’s easy to assume water quality data reflects every household well accurately, but government nitrate measurements in Navajo County aquifer 220NAVJ come from 40 samples across 14 different wells, not a single household’s supply. These wells were sampled over nearly a decade, from 2010 to 2019, providing a broad but indirect picture. Because these wells range in depth from 554 to 3,737 feet, the data pools different groundwater zones, not just one vertical slice. A small number of wells means the regional data offers a general trend, not an exact level for any specific household.
How Well Depth and Source Affect What You Should Expect
The diversity in sampling depths points to varying nitrate concentrations throughout the aquifer. Shallow wells often interact more with surface water sources, which can carry nitrates from agricultural runoff or natural deposits, while deeper wells may have lower or different nitrate profiles due to geological filtration. Consequently, your household well’s nitrate level could differ significantly from the median values reported. Knowing your specific well’s depth and water source is essential before drawing conclusions.
What the Median and Range Tell Homeowners About Nitrate
The median inorganic nitrogen (nitrate plus nitrite) measured in these samples is 0.961 mg/L, with values ranging from 0.02 to 4.72 mg/L. This means half the samples were below 0.961 mg/L and half above, illustrating variability within the county’s aquifer. These figures represent what the U.S. Geological Survey found but do not indicate whether your water matches these levels. They show that nitrate is commonly detected but always below federal thresholds in this dataset.
Maintenance Rhythm for Nitrate Filtration with the C-Series System
The C-Series Nitrate & Nitrite (Well) Filter ships ready to configure and is designed to reduce nitrate levels effectively in household water. Its maintenance routine depends on usage and local nitrate concentrations. Generally, households can expect to replace filter components on a schedule informed by usage volume and periodic water testing. Following this rhythm helps maintain efficient nitrate removal without guesswork or disruption.
Comparing Navajo County’s Record With Neighbouring Regions
When looking at nitrate data from neighbouring counties, it’s important not to overinterpret small differences in median or range. Variations may stem from differences in sampling depths, well types, agricultural practices, or natural geology. Navajo County’s aquifer record, with its range up to 4.72 mg/L, falls within typical regional variability. This comparison helps frame expectations but doesn’t predict individual household water quality.
What the Range Means Relative to Federal Thresholds—and What It Does Not
All nitrate and nitrite measurements in this dataset fall below the federal maximum contaminant level of 10 mg/L, indicating no recorded exceedances. However, detection does not equate to a violation or guarantee safety, and levels below thresholds still warrant monitoring. The range shows variation in nitrate presence but does not predict health outcomes or individual household risk without a direct test.
Your Next Step: Testing Your Household Water
To understand nitrate severity in your home water, order a comprehensive nitrate and nitrite test specific to your well. This test will provide the exact concentration you need to evaluate filtration options correctly. If the test reveals nitrate levels of concern, the C-Series Nitrate & Nitrite (Well) Filter offers a proven approach for reducing these compounds effectively.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2019-08-23. 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 220NAVJ aquifer (Navajo County): 40 results from 14 wells, median 0.961 mg/L, range 0.02-4.72 mg/L; none above any federal threshold