Fleck Arsenic Filter

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Interpreting Detected, Median, and Range in Area Arsenic Sampling

Detected means arsenic was measured but not necessarily at concerning levels

In 10 of 12 samples from 11 wells in Umatilla County aquifer 122CBRV, arsenic was detected. Detection only confirms the presence of arsenic; it does not indicate a violation or unsafe condition.

Median value provides a midpoint, not a prediction of your well's arsenic

The median arsenic measurement across these samples was 0.125 micrograms per liter (ug/L). This midpoint helps characterize the area but does not specify what your household water contains.

Range shows variability but not an absolute scope for individual wells

Samples varied from 0.07 to 6.2 ug/L. This range reflects how concentrations differ among wells sampled between 52 and 1787 feet deep but is not a direct forecast for a single well’s quality.

How Measured Arsenic Levels Relate to Federal Standards

No sampled result exceeded federal arsenic limits

All arsenic concentrations measured in this area were below the federal maximum contaminant level for arsenic in drinking water. This means the area samples do not indicate water quality noncompliance.

Sampling does not equate to safety status for your household supply

The absence of exceedances in area data does not guarantee your well water will meet standards. Individual testing of your own water source is necessary to assess arsenic levels accurately.

Initial Household Effects of Arsenic in Water

Arsenic presence usually has no immediate taste or odor impact

Arsenic contamination typically does not alter the taste or smell of water, so it often goes unnoticed without testing.

Long-term exposure can affect appliances and pose health concerns

Though arsenic itself does not damage fixtures, prolonged ingestion above safe thresholds can pose health risks, highlighting the value of treatment for detected arsenic.

Water Quality After Treatment with Fleck Arsenic Filter

Treated water reduces arsenic content at each faucet

The Fleck Arsenic Filter uses a control valve system to remove arsenic consistently, improving water quality throughout the household plumbing.

Filter operation adapts to household water demand

This system ships ready to configure for home use, providing arsenic removal without requiring additional plumbing services.

Comparing Umatilla County Arsenic Data with Neighboring Areas

Neighboring counties may have different arsenic concentrations and ranges

While Umatilla County samples show low to moderate arsenic levels, adjacent regions can vary; comparing data helps understand regional conditions but not individual water quality.

Sampling methodologies and times affect the comparability of arsenic data

Differences in sample dates, well depths, and numbers influence results, so regional comparisons must consider these factors to avoid misinterpretation.

What Area Arsenic Data Should Not Lead You to Assume

Area data is not a substitute for testing your own household water

Only a specific test of your household water can confirm arsenic levels present in your supply. Area sampling suggests possibilities but does not define your water.

Detection in area samples does not indicate safety violations for your well

Detecting arsenic at low levels regionally is common and not by itself a sign of unsafe water. Treating water based on your own test results provides the best protection.

Federal thresholds relate to health guidelines, not water aesthetics

Even if arsenic levels are below health limits, some homeowners choose treatment as a precaution or for peace of mind regarding long-term exposure.

Where this information comes from

Source: USGS groundwater sampling. Sampled 2018-09-20. These figures describe groundwater sampled in this area. They are not a test of any individual private well - only a test of that well can establish its own water.

On record: U.S. Geological Survey sampling of Arsenic in the 122CBRV aquifer (Umatilla County): 12 results from 11 wells, median 0.125 ug/L, range 0.07-6.2 ug/L; none above any federal threshold