If You Notice a Concern About Chromium(VI) in Your Tap Water
In Washington County, MN, the public water system serving Oakdale uses groundwater sources that have been monitored for hexavalent chromium (chromium-6) as part of a nationwide EPA study. While there is no health-based violation reported, households often consider treatment options when chromium-6 is detected in their water supply. Understanding this context can inform the choice between different water treatment equipment classes to fit your household's demand.
If You Want to Understand the Significance of California’s 10 µg/L Chromium-6 Criterion
California established a 10 micrograms per liter (µg/L) limit specifically for chromium-6, which is notably lower than the federal total chromium MCL of 100 µg/L. This state-specific standard emerged to address concerns about chromium-6’s potential health effects distinct from total chromium measurements. In Washington County’s Oakdale system, government monitoring from 2013 to 2015 detected chromium-6 levels ranging up to 0.74 µg/L — well below California’s limit and federal total chromium thresholds. This information helps frame the local context without implying any health-based violation in your water supply.
If You Seek Clarity on the Purpose and Limits of the EPA’s UCMR3 Survey
The Unregulated Contaminant Monitoring Rule 3 (UCMR3) was designed to collect occurrence data on contaminants, including hexavalent chromium, across many public water systems nationwide, including Oakdale. This monitoring provides valuable regional data but does not assess compliance or safety for individual households. The 14 samples taken from Oakdale’s system showed nine detections of chromium-6 above the reporting level of 0.03 µg/L, but the highest measurement was 0.74 µg/L. Because these results characterize the system—not your private water source—testing your own household water is necessary to determine your specific chromium-6 concentration.
If You Want to Know How the Fleck Technology Handles Chromium-6
For households deciding on equipment to manage chromium(VI), Fleck chromium-6 filtration technology offers a documented approach. It utilizes specialized filtration media configured by Fleck systems that target hexavalent chromium compounds to reduce their presence in water. This technology ships ready to configure, allowing you to set it up according to your household’s water demand without relying on external service providers. It addresses chromium-6 effectively, helping improve the quality of water used for drinking and daily activities.
If You Wonder About Maintenance and Care for Fleck Filtration
Maintenance for Fleck chromium-6 filtration is straightforward and involves periodic regeneration or media replacement based on your household’s water usage and the chromium-6 load measured in your supply. This rhythm keeps the system functioning properly to maintain water quality over time. Because no universal figures apply, your maintenance schedule depends on your water test results and consumption pattern, making it practical to track and adjust as needed.
If You Consider the Number of Samples and Monitoring Points Behind These Data
The Oakdale system's chromium-6 data are based on 14 individual samples collected over several months within the UCMR3 period. While this small dataset provides an initial overview of chromium(VI) occurrence for the public water system serving over 30,000 people, it has limits when representing your household’s water conditions precisely. Individual well testing is crucial to understand your home's chromium-6 levels and to select treatment equipment accordingly. The regional data serve as a guidepost rather than a definitive metric for any single residence.
Ultimately, selecting appropriate technology for chromium(VI) depends on measured demand from your testing and water use patterns. The Fleck chromium-6 filter offers a documented solution ready to accommodate household needs in Washington County, helping manage hexavalent chromium efficiently while aligning with the EPA's monitoring data and local water quality context.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2015-07-14. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR3 monitoring (2013-2015) for Oakdale (MN1820016), MN: 28 results across 2 listed contaminants, 19 detections above the reporting level; no federal MCL for hexavalent chromium; total chromium MCL 100 ug/L

