When considering chromium-6 in your household water, it's important to distinguish what government-supplied data indicates about your area's water system and what remains unknown without direct testing of your own supply. Garland County’s public water system records provide measured values but cannot specify the exact chromium-6 levels in your tap water.
California’s 10 µg/L Limit: Why It Matters and What It Means Here
California set a public health goal of 10 micrograms per liter (µg/L)—equivalent to parts per billion (ppb)—for chromium-6 due to potential health concerns. This guideline, though not federally enforceable, influences how people interpret chromium-6 in water nationally. Garland County’s water system data, however, show chromium-6 measurements below this California guidance level, which provides context but does not determine safety or require action for homes in Garland.
Hexavalent Chromium: Natural Groundwater Sources Versus Industrial Origins
Chromium-6 can enter water from natural geological sources or from human activities such as industrial plating. Garland County’s water supply is surface water, which generally differs chemically from groundwater. Understanding whether chromium-6 arises from natural or industrial influences helps interpret monitoring results but cannot pinpoint contamination origins for individual household water without testing.
Detected Levels, Medians, and Ranges: Decoding the Monitoring Record
The EPA’s Unregulated Contaminant Monitoring Rule found chromium-6 detected in all sixteen samples from the Garland County system between 2013 and 2015, with values ranging from just above 0.03 µg/L to 0.106 µg/L, and a median detection of 0.059 µg/L. These are measured presences, not violations or regulatory limits, offering a snapshot of chromium-6 occurrence in the system—not of your specific tap water.
The Influence of Plumbing Materials and Age on Chromium Levels
Factors within household plumbing can affect chromium concentrations independently from source water. Older pipes, corrosion products, or plumbing materials might modify chromium presence in tap water, separate from what is found in the public water system’s primary supply. Testing your household water reveals these local variations.
How Water Treated with Pentair Chromium-6 Filter Can Differ at the Tap
The Pentair Chromium-6 Filter ships ready to configure for residential use and targets hexavalent chromium to reduce this constituent at point-of-entry or point-of-use. While this technology addresses chromium(VI) effectively, using it can provide additional assurance specifically for your home’s water, beyond what the public system’s data show.
In summary, the EPA’s public water system records for Garland County's Hot Springs Utilities document the presence of chromium-6 consistently above minimal reporting levels but well below any federal maximum contaminant level. This information pertains to the whole system and does not determine your household’s exact chromium-6 concentration. For individual assurance, testing your tap water and considering filtration options like the Pentair Chromium-6 Filter can help address concerns regarding chromium(VI).
For more details on Garland County’s water quality records, visit the official EPA Safe Drinking Water Information System public data.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2014-05-12. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR3 monitoring (2013-2015) for Hot Springs Utilities (AR0000209), AR: 32 results across 2 listed contaminants, 19 detections above the reporting level; no federal MCL for hexavalent chromium; total chromium MCL 100 ug/L
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