Measured Range and Federal Standards: What Area Data Shows and Does Not Show
In Harrison County, Mississippi, groundwater sampling from aquifer 121GRMF between 2010 and 2015 recorded iron concentrations with a median of 34.3 micrograms per liter and a range from 3.1 to 329.0 micrograms per liter. Importantly, none of these measures exceeded federal health-based thresholds. This means detection, even at the higher end of this range, is not a violation or a safety concern by regulatory standards. The data reflects conditions in sampled wells 75 to 829 feet deep and does not directly establish the quality or taste at an individual household tap.
Comparing Harrison County Records with Neighbouring Areas Without Overreading
Comparisons with adjacent counties should be made cautiously. Variability in local geology and depth of wells affects water characteristics like metallic taste. Harrison County's iron detection profile is one of many factors that contribute to taste perceptions in tap water but does not imply identical experiences elsewhere. Regional data provide context but do not replace direct water testing at your specific location.
Differences Between Public System Records and Private Well Testing
Public water systems often document iron and other constituents routinely, but these records represent averaged or treated water. Private well sampling, by contrast, gives direct insight into your water source but must be performed by certified laboratories to identify what metals or compounds contribute to metallic taste in your household water. Understanding this distinction helps prioritize appropriate water quality actions.
How Iron Enters Groundwater and the Distribution System in Harrison County
Iron naturally occurs in groundwater due to the surrounding geological formations in Harrison County. It dissolves into water over time in aquifer 121GRMF and can enter the household water supply through the well or municipal distribution system. This presence can cause metallic taste and minor staining but is common in many aquifers nationwide and generally not a health threat at measured levels.
Understanding 'Detected,' 'Median,' and 'Range' in This Sampling Record
In the USGS data, 'detected' means the instrument measured iron above its minimum reporting level in 44 of 52 samples. 'Median' is the middle value, indicating half the samples had more and half less than 34.3 micrograms per liter. The 'range' from 3.1 to 329.0 micrograms per liter reflects the lowest and highest measured levels, illustrating natural variability in the aquifer. None of these metrics alone indicate a household’s water concentration or safety.
Plumbing Material and Age's Impact Separate from Source Water
Metallic taste in water may also be influenced by plumbing materials or the age of household pipes. Corrosion or mineral buildup in plumbing can introduce metallic flavors independent of source water quality. Addressing taste concerns may require evaluating internal plumbing alongside source water analysis.
Summary: This page clarified how government sampling in Harrison County informs but does not define the quality or taste at your tap. Determining metallic taste causes involves direct water testing and understanding plumbing influences rather than relying solely on area data. For sustained taste improvement, filtering systems like the C-Series Metallic-Tasting Water Filter ship ready to configure and offer documented performance addressing these water quality issues.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2015-04-29. 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 121GRMF aquifer (Harrison County): 52 results from 31 wells, median 34.3 ug/L, range 3.1-329.0 ug/L; none above any federal threshold