Overview of Sherburne County’s Aquifer 112GSSG and Water Supply
Water drawn from aquifer 112GSSG in Sherburne County typically travels through wells that range between 19 and 46 feet deep. This local groundwater source feeds residential taps, carrying naturally occurring minerals and compounds including fluoride, which is commonly found in varying amounts throughout many U.S. aquifers.
Why Aesthetic Secondary Standards Differ from Health-Based Limits for Fluoride
Fluoride concentrations reported in Sherburne County wells are well below federal health-based maximums
Government samples taken from eight separate wells in this aquifer recorded fluoride concentrations ranging from 0.04 to 0.11 mg/L, with a median of 0.07 mg/L. None of these results surpass federal health-based limits, which means these levels do not indicate safety concerns according to current regulations.
Secondary standards focus on taste, staining, and corrosion rather than health effects
Fluoride can affect water aesthetics such as taste or the potential to cause staining. However, these secondary standards are not health limits and exceeding them does not imply unsafe water. Understanding this distinction can help households better evaluate their water quality needs.
Distinguishing Fluoride from Other Common Water Issues
Fluoride is chemically and functionally different from hardness or iron problems
Fluoride does not cause scale buildup or rust stains, which are typical signs of hardness and iron respectively. Recognizing these differences can prevent confusion when selecting water treatment options that specifically target fluoride reduction.
Not all water discoloration or taste changes relate to fluoride content
Water color or metallic taste changes often point to other minerals or microbial presence, so these symptoms alone should not be attributed to fluoride.
Sampling Size and Data Reliability for Sherburne County Fluoride Levels
The data represents 8 samples taken from 8 distinct wells in the area between May and August 2018
While the sample size is limited, it covers multiple wells across the aquifer, providing a snapshot rather than a definitive condition of any single household’s water.
Small sample sizes mean individual test results are essential for specific household decisions
Because these figures are regional medians and ranges, households should conduct certified laboratory testing of their own well water to determine actual fluoride content.
Understanding Certified Laboratory Test Reports for Fluoride in Household Water
Test results will specify fluoride concentration in milligrams per liter (mg/L)
Lab reports identify exact fluoride levels, allowing homeowners to compare them to regional data and health guidelines.
Interpreting test values requires consideration of both health and aesthetic standards
Knowing whether your water fluoride level approaches or exceeds health-based maximum contaminant levels or secondary aesthetic limits helps inform treatment decisions.
Additional Questions for Non-Residential Water Users
Commercial or industrial users may need larger treatment capacity and compliance assurance
Operators beyond residential customers often consider daily water volume, regulatory reporting, and continuous monitoring which influence treatment equipment choice.
Seasonal and Year-Round Fluoride Level Variations in Sherburne County
Sample dates spanning late spring to late summer 2018 show fluoride levels consistently detected within a narrow range
This indicates limited short-term variation during that period but does not guarantee stability throughout all seasons or years; ongoing testing is advisable.
Summary of Fluoride Sampling Scope in Sherburne County and Next Steps
The United States Geological Survey sampled eight wells in Sherburne County’s aquifer 112GSSG in 2018, detecting fluoride in all but none exceeding health-based limits. For individual households, certified testing of your own water is necessary to confirm fluoride levels. To address fluoride effectively, the C-Series Fluoride Filter ships ready to configure and targets fluoride reduction specifically for residential use.
For full details on the data collection and results, consult the USGS groundwater monitoring site directly.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2018-08-27. 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 Fluoride in the 112GSSG aquifer (Sherburne County): 8 results from 8 wells, median 0.07 mg/L, range 0.04-0.11 mg/L; none above any federal threshold