The U.S. Geological Survey's groundwater sampling in Navajo County's aquifer 220NAVJ shows iron detected in some wells, with a median concentration of 7.75 micrograms per liter (ug/L) and a range from 4.3 to 30.6 ug/L, based on 40 results from 14 wells sampled between 2010 and 2019. None of these concentrations exceeded federal safety thresholds.
How to Judge Treatment Capacity Against Your Household's Daily Demand
When addressing iron and hardness in your home's water supply, considering the treatment system’s capacity relative to your household's water use is essential. The documented Fleck Iron + Hard Water System has a grain capacity of 32,000, indicating the amount of hardness minerals it can process before regeneration is needed. Estimating daily water consumption and hardness level—through laboratory testing of your own supply—helps determine how frequently the system will need to cycle. A system sized appropriately to your water use delivers consistent water quality and prevents premature exhaustion of its capacity.
What the Measured Range Means Against the Relevant Federal Standard, and What It Does Not Mean
Iron concentrations found in Navajo County’s aquifer samples ranged from 4.3 to 30.6 ug/L, and none exceeded any federal safety threshold. This means the detected iron levels are commonly present but do not indicate a violation or an unsafe condition. Iron at these concentrations can affect aesthetic qualities such as taste, color, and staining but are not health hazards by regulatory standards. It is important to distinguish that detection alone does not imply a problem requiring treatment; personal water testing is necessary to confirm specific conditions in your household supply.
How the Documented Treatment Technology Removes or Neutralizes the Constituent
The Fleck Iron + Hard Water System uses ion exchange and filtration technology designed to reduce iron and hardness minerals effectively. The system removes dissolved iron by exchanging iron ions with sodium or potassium ions, also softening water by reducing calcium and magnesium hardness. This dual action improves water taste, prevents staining, and protects household appliances from scale buildup. Being a ready-to-configure system, it allows for integration into your water supply without requiring specialized setup services.
What 'Detected', 'Median' and 'Range' Mean in the Sampling Record on This Page
'Detected' means that instrument measurements identified iron in 18 out of 40 sample results; however, the other 22 results were below the reporting limit, indicating no measurable iron presence. The 'median' value of 7.75 ug/L represents the middle concentration when the measurements are ordered numerically, providing a typical level for the area. The 'range' from 4.3 to 30.6 ug/L shows the span between the lowest and highest detected iron concentrations in samples, reflecting variability between different wells and sampling dates.
How to Compare This Area's Record With a Neighboring County's Without Overreading It
Water quality data from Navajo County’s aquifer cannot be directly transferred to neighboring regions because each area’s geology, well depths, and water sources differ. For example, another county may have different patterns in iron concentration or hardness. Comparing data effectively requires recognizing these environmental distinctions and avoiding assumptions that regional detection means identical conditions elsewhere. Testing your actual water supply remains the essential step for informed treatment decisions.
This page references the U.S. Geological Survey groundwater sampling record for Navajo County’s aquifer 220NAVJ, which covers multiple wells sampled over several years. For more detailed information and updates, consult the official government source at waterdata.usgs.gov.
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 Iron in the 220NAVJ aquifer (Navajo County): 40 results from 14 wells, median 7.75 ug/L, range 4.3-30.6 ug/L; none above any federal threshold