1. An Example: Interpreting Boulder County Aquifer Data for Your Household
For residents relying on wells in Boulder County’s aquifer 120TRTR, government sampling from four wells between June 2020 and May 2023 offers a reference point. The median iron concentration measured was 3.173 mg/L, with results ranging widely from 0.14 mg/L up to 4140.0 mg/L. While this data reflects the area aquifer, it does not directly indicate your well’s iron level. However, it helps understand that iron is commonly detected in this region’s groundwater and that concentrations can vary significantly.
2. Understanding What 'Detected,' 'Median,' and 'Range' Indicate
Each sample was analyzed for iron, which was detected in all 23 results, meaning the measuring instruments found iron consistently in sampled wells. The median value represents the middle measurement among samples, showing a general typical concentration in the area’s groundwater. The range shows the lowest and highest iron concentrations found, signaling variability across locations or depths. Notably, 17 of the samples were above the secondary aesthetic standard of 0.3 mg/L, which relates to taste and staining concerns but is not a health or safety limit.
3. What Can Occur If Elevated Iron Is Not Addressed Over Time
Iron in water typically causes aesthetic issues such as reddish stains on plumbing fixtures and laundry discoloration. Over years, untreated iron can lead to buildup in pipes, reducing water flow and affecting appliance efficiency. While these effects do not pose a health risk, they influence water quality and household maintenance needs. Recognizing these outcomes can guide how seriously to consider treatment options.
4. What a Certified Laboratory Water Test Will Report and How to Use It
A certified lab test performed on your specific well water will report iron concentration in mg/L alongside any other detected constituents. The report clarifies the iron level in your water, which can differ substantially from regional medians or ranges. Using this precise data is essential to determine the proper treatment system size and type suitable for your household’s needs.
5. Matching Treatment Capacity to Household Daily Water Demand
The treatment system capacity must accommodate the volume and iron concentration typical for your household’s water use. For example, a system with a grain capacity of 32,000 is designed to handle large iron loads before regeneration cycles. Assess your daily water consumption and combine it with your water’s documented iron concentration to select an appropriate system size. This approach avoids over- or under-sizing and ensures efficient operation over time.
The Autotrol Complete Well System ships ready to configure and is specified for such complete well water treatment needs, balancing capacity and iron reduction effectively.
Government sampling in Boulder County’s aquifer 120TRTR, covering four wells and 23 samples, provides the basis for these considerations. For detailed data, consult the U.S. Geological Survey groundwater sampling records at the government site.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2023-05-05. 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 Iron in the 120TRTR aquifer (Boulder County): 23 results from 4 wells, median 3.173 mg/L, range 0.14-4140.0 mg/L; 17 above an AESTHETIC secondary standard only (secondary standard 0.3 mg/L (aesthetic)) - not a health finding
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