What the Measured Range Means Against Federal Standards, and What It Does Not Mean
Iron levels detected in Navajo County wells are below federal safety thresholds
Sampling by the U.S. Geological Survey of 14 wells in Navajo County’s aquifer 220NAVJ between 2010 and 2019 found iron concentrations ranging from 4.3 to 30.6 micrograms per liter (µg/L), with a median of 7.75 µg/L. No result in this sampling exceeded any federal health-based standard. This means the measured iron amounts do not indicate a health violation. However, this data cannot confirm the iron level in your specific well or household water.
Detection does not equate to a quality violation
Iron detection simply means instruments measured its presence at that level in those sampled wells. It is not a determination of water safety or violation of legal limits. Iron affects aesthetics such as color and staining but is regulated under a secondary standard which is not a health requirement.
Questions Commercial or Industrial Operators Add That a Household Does Not
Commercial users often consider large-scale capacity and regulatory compliance
Businesses may require detailed records of maximum constituent levels, treatment capacity, and the possible impact on equipment and processes. Households generally focus on practical effects such as staining and taste rather than extensive regulatory documentation.
Industrial needs for continuous monitoring and large volume treatment differ
A commercial operator may demand ongoing automated monitoring, high-throughput systems, and integration with process controls. Households typically need straightforward, user-configurable systems suitable for daily living needs.
What Changes for Large Households, Second Homes, or Seasonal Properties
Treatment capacity should match household water demand
Larger households will require equipment with greater grain capacity and flow rates to manage water hardness and rust consistently. Seasonal or second homes may have different water use patterns that influence system sizing and maintenance schedules.
Maintenance frequency may vary with property use
Properties used seasonally might accumulate deposits during inactivity, necessitating treatment readiness that responds to intermittent water flow and rust buildup.
How the Documented Treatment Technology Removes or Neutralizes the Constituent
The Pentair Well Rust + Hardness System reduces hardness and rust effects through ion exchange
This system ships ready to configure and offers a grain capacity of 32,000 grains, suitable for typical household needs in Navajo County. It targets dissolved iron and hardness minerals by exchanging them for less reactive ions, lowering staining, scaling, and rust-related discoloration.
System configuration allows adaptation to well water variations
Because water chemistry varies, the system’s configuration capability helps households address the specific rust and hardness levels present in their water supply.
Why Aesthetic Secondary Standards Differ from Health-Based Limits, Applied to This Constituent
Iron is regulated under secondary standards focused on appearance and taste
The government’s secondary standards aim to control compounds like iron to prevent issues such as staining clothes or plumbing fixtures and unpleasant taste. These are not health-based limits, so exceeding them does not imply water is unsafe.
Households decide treatment based on comfort and convenience, not safety
The decision to treat iron and hardness often rests on maintaining plumbing, protecting appliances, and improving water aesthetics rather than addressing health concerns.
What 'Detected', 'Median', and 'Range' Mean in the Sampling Record on This Page
Detected means iron was measured above the instrument's reporting limit
Out of 40 samples, 18 showed measurable iron levels while 22 samples were below the detection threshold. This does not indicate a problem but shows variability in iron presence across wells.
Median represents the middle value of all detected measurements
The median of 7.75 µg/L means half the detected samples had iron concentrations below this and half above, giving a central tendency but not a maximum.
Range shows the lowest and highest detected iron concentrations in the sampling set
The range from 4.3 to 30.6 µg/L illustrates natural variation in well water across Navajo County but does not predict individual well conditions.
In summary, Navajo County area data shows iron levels in wells are generally low and below federal safety thresholds, but individual well water should be tested to know exact conditions. The Pentair Well Rust + Hardness System provides a configurable method to address household rust and hardness issues based on the specific water profile.
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