Federal monitoring of Dodge City’s municipal water system, serving over 27,000 people in Ford County, Kansas, detected chromium-6 (hexavalent chromium, Cr(VI)) in all samples tested between 2013 and 2015. Measurements ranged up to 1.0 micrograms per liter (µg/L), equivalent to 1 part per billion (ppb), with a median near 0.685 µg/L. These findings are from a federal unregulated contaminant monitoring rule survey, reflecting the presence of chromium(VI) in the regional groundwater source but are not health-based violations or regulatory limits.
Geogenic Hexavalent Chromium in Arid and Alkaline Aquifers Versus Industrial Plating Sources
The chromium-6 detected in the Dodge City water system primarily originates from geogenic sources common to arid, alkaline aquifers of the region. Naturally occurring chromium in rock formations interacts with groundwater to produce hexavalent chromium at low concentrations. This contrasts with industrial plating sources elsewhere, where chromium-6 may enter water through specific manufacturing discharges. Understanding this difference clarifies that Dodge City's chromium-6 presence is linked to natural groundwater chemistry rather than localized industrial contamination.
How Oxidation State Changes Between the Well, the Distribution Main and the Tap
Hexavalent chromium’s oxidation state can shift during water movement and treatment. In the well and aquifer, chromium exists predominantly as chromium(VI). When water travels through distribution mains or is exposed to disinfectants, some chromium(VI) may convert to chromium(III), a less soluble and generally less mobile form. However, the system’s data show chromium(VI) detections at the tap, indicating that these transformations are partial and vary depending on local water chemistry and treatment processes.
How the Treated Water Differs at the Tap Once the Documented Technology Is in Place
When equipped with the Pentek Chromium-6 Filter, household water undergoes targeted treatment designed to reduce hexavalent chromium concentrations effectively. This technology uses specialized media to adsorb chromium(VI) from water, delivering treated water with reduced chromium-6 levels at the tap for residential use. The filter ships ready to configure for point-of-entry household water management, focusing specifically on chromium-6 without broadly altering other water mineral content.
What Distinguishes This Problem From the Two Problems Most Often Confused With It
Chromium-6 concerns are often mistaken for issues involving total chromium or other metals affecting water taste or staining. Total chromium includes chromium(III), which is chemically and toxicologically distinct from chromium(VI). Additionally, some water problems arise from elevated total dissolved solids (TDS) or chloride concentrations, which affect aesthetics but are unrelated to hexavalent chromium. Proper testing differentiates these issues, ensuring that treatment addresses chromium-6 specifically, not these commonly confused parameters.
How the Constituent Enters Groundwater or the Distribution System in This Region
In Dodge City and the greater Ford County area, hexavalent chromium enters the groundwater primarily through natural leaching from local geologic formations rich in chromium minerals. The arid and alkaline nature of the aquifers promotes chromium(VI) stability and mobility. As groundwater is pumped for municipal supply and distributed to homes, chromium-6 is carried unchanged unless altered by treatment or chemical reactions within the system.
What the Reader Should Write Down Before Asking Anyone for Treatment Advice
- Obtain recent water quality reports from the local municipal supplier to confirm chromium-6 levels and other relevant water quality parameters in your area.
- Order a comprehensive water test specific for hexavalent chromium to determine your household’s exact concentration.
- Note any other constituents detected in your water that may influence treatment choice, such as iron or manganese, though unrelated to chromium-6.
- Define your household water usage to understand treatment capacity needs.
Choosing between technical approaches to address chromium-6 in residential water in Ford County requires understanding local water chemistry and the specific capabilities of treatment options. The Pentek Chromium-6 Filter provides a targeted approach to reduce chromium(VI) at the tap. Before selecting treatment, verifying household water composition and demand is essential to making an informed choice aligned with your water quality goals.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2015-08-10. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR3 monitoring (2013-2015) for City of Dodge City (KS2005710), KS: 32 results across 2 listed contaminants, 30 detections above the reporting level; no federal MCL for hexavalent chromium; total chromium MCL 100 ug/L
- ✓ 90-Day Money-BackNo restocking fees — return within 90 days.
- ✓ Manufacturer WarrantyGenuine Fleck · Pentair · VIQUA equipment.
- ✓ Free Expert SizingTalk to a specialist and buy the right system the first time.