1. Understand the Difference Between Public Records and Your Home Water Test
In Hennepin County, government groundwater sampling provides data on water quality from the local aquifer 112GSSG. These records represent measurements from multiple wells in the area—not your household well or tap directly. While this data reports on metals like iron found in local groundwater, it does not specify the concentration in your own water supply. A private test of your household water is necessary to confirm specific conditions causing metallic taste.
2. Recognize Seasonal and Multi-Year Variation in Water Quality Data
The U.S. Geological Survey collected iron measurements in 23 samples from 20 separate wells between July 2011 and September 2016 in Hennepin County’s aquifer 112GSSG. Results ranged widely from 8.5 to 4450 micrograms per liter, with a median of 92.7 micrograms per liter. These figures reflect natural variation over multiple years and seasons, which means the presence and levels of metals can fluctuate over time in the aquifer.
3. Rule Out Common Causes of Metallic Taste Before Testing
Begin by checking which water fixtures show metallic taste and observe if this taste changes during the day or after water has been sitting. Plumbing materials and household appliance conditions can influence flavor perception. If no source in plumbing or fixtures is apparent, a certified lab water test will help identify metals or other contributors causing the taste.
4. Interpreting Terms Like 'Detected,' 'Median,' and 'Range' in Local Sampling Data
In these groundwater samples, iron was detected in 21 of 23 tests but was below the reporting limit in 2. 'Detected' means the instrument found measurable iron, not that the water is unsafe or violates any standard. The 'median' value is the middle concentration when ranking all samples, and the 'range' shows the lowest and highest levels recorded. Importantly, none of these results exceeded any federal water quality thresholds or regulatory health-based limits.
5. Document Your Household Water Use and Test Results Before Seeking Treatment
Record the locations where metallic taste occurs, the times it is most noticeable, and any recent changes in water sources or plumbing. After obtaining a water quality report from a laboratory test, note concentrations of metals like iron and other relevant parameters. This information will guide selecting treatment options suited to your household’s specific water profile and usage patterns.
6. Evaluate Treatment Solutions Based on Household Water Demand
Understanding your daily water volume helps determine the capacity of any treatment system needed to address metallic taste effectively. Treatment products like the Pentair Metallic-Tasting Water Filter are designed to handle specific flow rates and contaminant loads. Matching the system’s capabilities to your household demand ensures effective reduction of metallic taste while maintaining water availability.
Addressing metallic taste in your household water involves a clear sequence: reviewing regional water data, ruling out plumbing sources, conducting home water tests, and matching treatment to your needs. The Pentair Metallic-Tasting Water Filter ships ready to configure and can provide targeted relief when sized appropriately based on your documented water usage.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2016-09-08. 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 112GSSG aquifer (Hennepin County): 23 results from 20 wells, median 92.7 ug/L, range 8.5-4450.0 ug/L; none above any federal threshold
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