Understanding Water from Greene County's Aquifer 112OTSH
In Greene County, Ohio, many households rely on water drawn from aquifer 112OTSH, where groundwater flows through layers 11 to 100 feet below the surface before reaching home taps. Water quality in this aquifer is monitored by the U.S. Geological Survey (USGS), providing sampled data over a decade from various wells in the area. This sampling gives a regional picture but does not specify conditions for any individual household well.
Comparing Greene County to Neighboring Regions Without Overreading
When looking at nitrate levels in a neighboring county or aquifer, it is important to understand that geological differences, agricultural practices, and land use vary widely. Such factors influence nitrate presence in groundwater, making direct comparisons limited in their relevance for decision-making about local water treatment. Using Greene County's specific USGS data ensures that the information reflects the aquifer's characteristics rather than broader or unrelated areas.
Differences Between Public Water System Records and Private-Well Testing
Public water systems undergo frequent and regulatory sampling to comply with safety standards, producing detailed records of nitrate and other constituents. Private wells, however, lack standardized reporting and require homeowners to perform independent testing to determine their well water chemistry. Thus, while USGS data provides a regional baseline, homeowners should test their own water to understand their specific nitrate concentration before selecting equipment or treatment methods.
Recognizing Household Signs Related to Nitrate
Nitrate itself is tasteless and odorless, so usual household symptoms like changes in taste or smell do not directly indicate its presence or absence. However, high nitrate levels may raise health concerns particularly for infants and pregnant women. Symptoms that might arise due to nitrate exposure are medical rather than physical changes in water appearance or appliance function. Homeowners should not assume symptoms observed in plumbing or water usage are due to nitrate but rather seek testing to clarify.
Sources of Nitrate in Greene County's Groundwater
In this region, nitrate primarily enters groundwater through agricultural runoff containing nitrogen-based fertilizers and through natural soil processes that transform organic nitrogen. Septic systems and animal waste can also contribute in localized settings. These sources leach nitrate into the subsurface where it dissolves and moves with groundwater flow, accumulating in varying concentrations depending on local factors.
Interpreting Greene County's Median, Range, and Detection Results
The USGS report on aquifer 112OTSH from 10 wells sampled over 10 years shows a median inorganic nitrogen concentration of 3.25 milligrams per liter (mg/L), with individual results ranging from 0.158 to 16.0 mg/L. Nitrate was detected in 9 of 12 samples, although detection indicates only measurable presence, not a violation or immediate concern. One sample exceeded the federal maximum contaminant level of 10.0 mg/L, a health-based threshold. This range illustrates variability in local conditions but does not establish conditions for any single household.
Closing Summary and Source Information
This overview reflects USGS sampling of groundwater from multiple wells in Greene County's aquifer 112OTSH, collected between 2010 and 2020. It provides a regional understanding of nitrate presence but underscores the importance of personal water testing. For those considering treatment options, the Fleck Nitrate & Nitrite (Well) Filter ships ready to configure and is designed specifically to address nitrate and nitrite removal in well water. Complete details and data are available from the USGS monitoring location at waterdata.usgs.gov.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2020-10-20. 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 Inorganic nitrogen (nitrate and nitrite) in the 112OTSH aquifer (Greene County): 12 results from 10 wells, median 3.25 mg/L, range 0.158-16.0 mg/L; 1 above a health-based federal MCL (federal MCL 10.0 mg/L)
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