Autotrol Chromium-6 Filter

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What does government sampling tell us about chromium-6 in Juneau City And Borough water?

Federal monitoring conducted from 2013 to 2015 on the public water system serving Juneau City And Borough, Alaska, tested for chromium-6, also known as hexavalent chromium or chromium(VI). This survey recorded chromium-6 in most samples, with 9 out of 10 showing detectable levels above 0.03 micrograms per liter (µg/L, or parts per billion). The highest concentration measured was 0.093 µg/L, and the median of these detections was 0.071 µg/L. Importantly, the system has no health-based violations on record for chromium or chromium-6. These results represent the water delivered to the public system's customers, not conditions in any individual home’s plumbing or private well.

How should terms like 'detected', 'median', and 'range' be understood in this context?

In federal water quality sampling, 'detected' means an instrument found chromium-6 at a measurable level above the reporting threshold, not that the water exceeds any safety limit. The 'median' is the middle value of detected concentrations, illustrating a typical level during the survey period. The 'range' specifies the lowest and highest measured values among samples. These terms summarize data across the entire public water system but do not describe water quality at any particular household.

What does a certified laboratory report provide when testing for chromium-6 in home water?

If a homeowner orders a certified water test for chromium-6, the report will present the measured concentration in micrograms per liter (µg/L or ppb). Such a report reflects the conditions at the specific sample point, such as the kitchen tap or a private well. It will not reference the broader public system data and serves as the definitive source for understanding individual water quality.

How can a homeowner interpret median and range values from system-wide data for their own water?

Using the system’s median of 0.071 µg/L and maximum of 0.093 µg/L can provide a general sense of chromium-6 presence in the area’s source water, but these numbers do not predict individual household concentrations. Variability in plumbing materials, water usage, and private water sources means your home’s chromium-6 level may be lower or higher. Direct testing of your water is necessary for an accurate assessment.

What steps should a homeowner take to understand chromium-6 in their water?

Start with the least expensive option: check with your local utility to obtain the most recent water quality reports, which include chromium-6 testing results for the public supply. If your water comes from a private well, or if you want confirmation of your tap water quality, proceed to order a certified laboratory test that lists chromium-6 concentration. This targeted approach ensures you make informed decisions based on your specific water.

Why has California set its own 10 µg/L limit for chromium-6, and what does that imply here?

California established a public health goal of 10 micrograms per liter for chromium-6 due to local studies and regulations not yet adopted federally. This limit is a precautionary standard to guide treatment choices and inform the public. Juneau’s public water system measurements are well below this level, and there is no federal enforceable maximum contaminant level (MCL) for chromium-6 in place. Thus, California’s limit offers context but does not indicate a regulatory issue in Juneau’s system.

What is the most effective way to address chromium-6 in home water if testing shows concern?

If your certified water test indicates chromium-6 levels that warrant treatment, technologies such as the Autotrol Chromium-6 Filter are documented to reduce chromium(VI) in residential water supplies. This equipment ships ready to configure and connects in your home water line to reduce hexavalent chromium concentrations effectively. Using such a filter can help homeowners achieve cleaner water tailored to their test results.

In summary, the single essential step is obtaining a certified laboratory test for chromium-6 specific to your home’s water. A result showing chromium-6 at or below your chosen guideline level—whether California’s 10 µg/L goal or a more conservative standard—will clarify whether further action is needed.

Where this information comes from

Source: EPA SDWIS public water system record. Sampled 2015-07-27. These figures describe the public water system's record, not the plumbing inside any individual building.

On record: EPA UCMR3 monitoring (2013-2015) for Juneau (AK2110342), AK: 20 results across 2 listed contaminants, 9 detections above the reporting level; no federal MCL for hexavalent chromium; total chromium MCL 100 ug/L