Pentair Arsenic Filter

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If Your Home Water Has Arsenic Concerns, Note the Difference Between Aesthetic and Health Standards

It’s common to confuse aesthetic secondary standards with enforceable health limits. For arsenic, federal guidelines focus on health-based maximum contaminant levels (MCLs) to protect users from long-term exposure risks. Secondary standards relate to taste, staining, or odor, not direct health effects. In Davis County’s aquifer, the arsenic detected by government monitoring is below all federal health-based limits, emphasizing the importance of context when interpreting water quality data.

If You See Arsenic Concentrations Up to 25.4 µg/L in Area Wells, Understand What This Means and Does Not

The U.S. Geological Survey’s sampling of two separate wells in Davis County’s aquifer—ranging from about 300 to 600 feet deep—showed arsenic measured between 0.84 and 25.4 micrograms per liter. While all measurements were below the federal MCL, this range indicates detectable arsenic is present in groundwater. However, these figures do not predict arsenic levels in your private well. Only a specific water test of your household supply will reveal your exact concentration.

If You Compare Public Water System Records and Private Well Testing, Note Their Different Roles

Local municipal systems in Davis County have water-quality records demonstrating compliance with health-based arsenic standards, supported by their treatment and monitoring protocols. By contrast, private wells are unregulated and can vary widely. Public system records provide general regional assurance but do not specify individual well conditions. For private wells, a certified laboratory test is essential to assess the need for filtration or other treatment accurately.

If You Consider Seasonal or Multi-Year Variation, See Stability in Government Sampling Dates and Ranges

The U.S. Geological Survey results encompass 13 samples taken from July 2010 to July 2019, over nearly a decade. Despite this lengthy period, arsenic levels in sampled wells remained consistently below federal limits, without evidence of seasonal spikes or significant increases. This indicates stable arsenic presence in the aquifer but does not eliminate the need for personalized testing.

If You Operate a Commercial or Industrial Property, Additional Water Quality Questions Arise

Commercial and industrial operators must consider volume demands, process sensitivity to arsenic, and regulatory requirements beyond residential standards. Such users often require more frequent sampling and customized treatment arrangements. Although this page focuses on household considerations, it is important for larger users to consult specialized resources and laboratories for comprehensive water quality management.

If You Are Deciding What Testing to Do, Follow an Efficient Order from Low-Cost Checks to Certified Laboratory Analysis

Begin by examining any available recent municipal water quality reports or regional data like the USGS well sampling for Davis County. Follow this with visual and sensory checks of tap water, although arsenic is not detectable by taste or odor. Most importantly, arrange for a certified laboratory test of your own water supply to determine the exact arsenic levels and assess the degree of treatment needed.

When the results confirm arsenic presence warranting remediation, the Pentair Arsenic Filter offers a documented solution that ships ready to configure for household use, effectively addressing arsenic removal.

This guidance is based on U.S. Geological Survey groundwater sampling of wells in the Davis County aquifer, covering data from 2010 to 2019. For further information, consult the original source at https://waterdata.usgs.gov/monitoring-location/410410112050001/.

Where this information comes from

Source: USGS groundwater sampling. Sampled 2019-07-11. 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 aquifer (Davis County): 13 results from 2 wells, median 23.6 ug/L, range 0.84-25.4 ug/L; none above any federal threshold