Iron and Rust in San Juan County Homes: Understanding Aquifer N300COPLTS Water Data
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Rust Iron Stains & Sulfur Filter
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Measured Iron Levels Versus Federal Standards: What the Range Shows and What It Does Not
The U.S. Geological Survey sampled 13 wells from the N300COPLTS aquifer in San Juan County between 2012 and 2025. Iron was detected in 54 of 65 samples, ranging from 20 to 39,000 micrograms per liter, with a median concentration of 325 micrograms per liter. Importantly, none of these results exceeded any federal health-based thresholds for iron in drinking water. These findings reflect what has been measured across the area but do not specify the iron content of any individual household’s water supply. A detection indicates presence, not a violation or confirmed problem.
Comparing Household and Commercial Water Concerns in San Juan County
Households primarily face iron issues related to staining and rust buildup that can affect fixtures and laundry, whereas commercial or industrial operators may require more detailed assessments covering water volume, treatment capacity, and water contact processes. While homeowners focus on clarity, taste, and staining prevention, larger operations might analyze iron's impact on machinery and production quality, combining iron data with additional parameters like total dissolved solids or flow rates.
Seasonal and Multi-Year Iron Variations Documented in the Aquifer Records
The government sampling spans over a decade, from November 2012 to September 2025, showing variability in iron concentrations within the aquifer. This variability reflects natural fluctuations rather than a steady increase or decrease. The depth of sampled wells (32 to 52 feet) and differences in groundwater conditions across San Juan County contribute to changes detected over time. Understanding this temporal range helps set expectations that iron levels may vary in a home’s supply from season to season or year to year.
A Homeowner’s Guide to Reading Median and Range Data for Iron in San Juan County Water
For someone with failed iron treatment equipment, knowing that the median iron level is 325 micrograms per liter provides a point of reference: half the measurements are above and half below this value. However, because iron presence varies widely, individual water testing is essential to identify the true iron concentration in your household supply. The recorded range shows that while some wells have low iron, others can have significantly higher amounts, making a customized approach necessary.
Distinguishing Iron and Rust from Commonly Confused Water Issues
Iron and rust problems are often mistaken for issues caused by sediment or manganese. Unlike sediment, which is particulate matter that may settle or cause cloudiness, iron can dissolve in water and cause reddish or brown staining on fixtures. Manganese may cause black or dark stains and can be confused visually with iron. Recognizing the specific source helps in selecting the proper treatment method rather than relying on guesswork.
How the Fleck Orange Iron & Rust Stains Filter Addresses Iron in San Juan County Water
The Fleck Orange Iron & Rust Stains Filter ships ready to configure for home use and is designed to remove or neutralize iron that causes staining and rust buildup. It works by targeting the dissolved iron before it oxidizes and deposits on surfaces, reducing the visible signs of rust and protecting household plumbing and appliances. This direct-purchase system offers a practical solution especially for those facing equipment failure and seeking reliable control of iron-related water problems.
All the iron data presented here reflect samples taken from wells 32 to 52 feet deep in the N300COPLTS aquifer within San Juan County. For detailed data and ongoing updates, consult the U.S. Geological Survey’s site on local groundwater monitoring.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2025-09-18. 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 N300COPLTS aquifer (San Juan County): 65 results from 13 wells, median 325.0 ug/L, range 20.0-39000.0 ug/L; none above any federal threshold