Laboratory reports for iron in Henry County groundwater typically list measurements in milligrams per liter (mg/L). These records come from multiple wells tapping the local aquifer, which ranges in depth from 44 to 54 feet. The data set includes nine samples collected between May 29, 2015, and July 25, 2024, offering a snapshot over nearly a decade.
Seasonal and Multi-Year Variation in Henry County Aquifer Sampling
The monitoring timeline spans more than nine years, so variation in iron concentrations can reflect changes in water table conditions, seasonal effects, or environmental factors affecting the aquifer. Samples in this record show values ranging from a non-detected level up to 0.84 mg/L, with a median value of 0.03 mg/L. While most readings fall well below the taste and staining aesthetic threshold of 0.3 mg/L, one sample exceeded it. Such fluctuations demonstrate that iron levels can differ year to year and even season to season in this geographic area.
Interpreting Terms: 'Detected', 'Median', and 'Range' in This Sampling Record
'Detected' means that the measurement instrument registered the presence of iron at or above its detection limit in all nine samples. The 'median' is the middle value when all measurements are ordered, providing a central tendency that in this data set is low, at 0.03 mg/L. The 'range' covers the spread between the lowest and highest detected values, here from 0.0 to 0.84 mg/L. It’s important to note that detection does not imply non-compliance or a health concern; rather, it documents what was measurable. The secondary standard of 0.3 mg/L relates solely to aesthetic factors such as taste or staining potential and is not a health-based limit.
Influence of Plumbing Materials and Age on Household Water Quality
Water quality as experienced at the tap can be affected by the household plumbing system separately from the source water. Older pipes, pipe materials, and mineral buildup can influence iron appearance and even contribute to discoloration or taste issues, independent of aquifer concentrations. Thus, any water issues encountered might require assessing plumbing conditions in addition to source water testing.
Stepwise Approach to Identifying the Source of Water Quality Issues
- Start with visual and sensory examination of water for color, taste, or staining.
- Check for signs related to household plumbing such as rust staining on fixtures or inside pipes.
- If concerns persist, arrange for a laboratory test of your own well water focusing on constituents like iron to get a clear picture of your specific supply.
- Consider equipment designed for complete well water treatment, such as the Autotrol Complete Well System, which addresses common well water challenges with a capacity suitable for household demands (32,000 grains).
Comparing Henry County Water Quality Data with Neighboring Areas
When reviewing water quality data from adjacent counties, keep in mind differences in geology, aquifer characteristics, and local land use. Such factors can affect constituent levels, making direct comparisons potentially misleading. Use regional data as a broad informational guide rather than a predictor of individual well conditions.
What Area Data Does Not Indicate About Your Well
Area sampling results show trends within the Henry County aquifer but do not define the quality of your household’s well water. Detection of iron does not mean your water has the same levels, nor does a single sample above the secondary aesthetic threshold indicate that your water will exceed it. Health and safety cannot be inferred from these data alone. A specific test of your well is essential before making treatment decisions based on your water’s unique profile.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2024-07-25. 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 aquifer (Henry County): 9 results from 4 wells, median 0.03 mg/L, range 0.0-0.84 mg/L; 1 above an AESTHETIC secondary standard only (secondary standard 0.3 mg/L (aesthetic)) - not a health finding