Autotrol Chromium-6 Filter

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Opening: Understanding What Kitsap’s Water Data Does and Does Not Show

Government sampling of the Silverdale Water District #16, serving over 35,000 people in Kitsap County, WA, has measured hexavalent chromium (chromium-6) levels in groundwater-supplied public water. Between 2014 and 2015, chromium-6 was detected in most samples, with a median concentration of 5.8 micrograms per liter (µg/L or ppb) and a highest reported level near 9.9 µg/L. However, these findings reflect the system’s water overall, not any individual home’s water. Only a specific test of your household water can reveal your exact chromium-6 concentration. Also, there are currently no federal maximum contaminant levels (MCLs) for chromium-6 itself, and no health-based violations are on record for this water system. Thus, detection does not equal safety concern but can guide thoughtful decisions about treatment.

1. Geogenic Hexavalent Chromium in Arid and Alkaline Aquifers Versus Industrial Plating Sources

Chromium in water can originate from natural geological formations or human activities. In many areas, including Kitsap County, chromium-6 can come from geogenic sources where groundwater interacts with chromium-containing minerals, especially under arid or alkaline aquifer conditions that favor chromium(VI) presence. This contrasts with industrial plating or manufacturing sites, where chromium(VI) presence relates to site contamination. Understanding your water source context helps clarify chromium-6’s origin and implications for treatment choices.

2. What Questions a Commercial or Industrial Operator Adds That a Household Does Not

Commercial and industrial water users often require compliance with regulatory limits, managing effluent discharge and worker safety related to chromium-6 in water. They may assess chromium(VI) speciation changes during processing or cooling water use. Households typically focus on drinking water quality and minimizing chromium-6 exposure through taps. Commercial queries include volume flow, peak loading, and detailed chemical interactions, which usually fall outside residential concerns.

3. How the Documented Treatment Technology Removes or Neutralizes the Constituent

The Autotrol Chromium-6 Filter employs a technology that binds and reduces chromium(VI) in water through a specialized media process. Rather than merely filtering particles, it chemically transforms chromium-6 into less soluble forms and adsorbs chromium compounds, lowering the chromium(VI) levels in treated water. This technology ships ready to configure for household use and is designed to address chromium-6 effectively, supporting safer water for domestic needs.

4. Which Fixtures, Appliances, or Processes Are Affected First and Why

Chromium-6 can interact with plumbing and appliances differently than other minerals. Fixtures in frequent contact with unfiltered water, such as kitchen sinks, refrigerators, and drinking fountains, are the primary points where improvements in chromium-6 levels matter most. Bathing or laundry water exposure generally involves lower risk and less direct ingestion. Choosing to treat water at points of use where ingestion or food preparation occurs addresses the most critical exposure avenues.

5. Trivalent Versus Hexavalent Chromium: Why a Total-Chromium Result Cannot Answer the Question

Total chromium measurements include all forms of chromium combined, but chromium(VI) and chromium(III) differ significantly in chemistry and effects. Chromium-6 is more soluble and mobile in water, and treatment needs focus on this form specifically. Since total chromium figures integrate both forms, they cannot reliably indicate chromium-6 levels or guide decisions alone. Government records list both total chromium and chromium-6 detections separately to support nuanced understanding.

Closing: Scope of the Record and Next Steps

The Silverdale Water District #16 record from the EPA’s unregulated contaminant monitoring rule provides a valuable overview of chromium-6 detection in this public groundwater system but does not characterize individual household water conditions. To determine your water’s chromium-6 level, specific testing of your home’s supply is essential. For households considering treatment, the Autotrol Chromium-6 Filter offers a documented approach to reducing hexavalent chromium concentrations. For detailed government data, see the EPA public water system records.

Where this information comes from

Source: EPA SDWIS public water system record. Sampled 2015-06-29. These figures describe the public water system's record, not the plumbing inside any individual building.

On record: EPA UCMR3 monitoring (2013-2015) for Silverdale Water District #16 (WA5379300), WA: 88 results across 2 listed contaminants, 78 detections above the reporting level; no federal MCL for hexavalent chromium; total chromium MCL 100 ug/L