Arsenic Measurements in Walworth County: Federal Standards and What They Indicate
Government sampling of wells in Walworth County’s aquifer 110QRNR found arsenic present in three tests taken between 2010 and 2021. The measured concentrations ranged from 1.5 to 2.8 micrograms per liter, with a median of 2.2 micrograms per liter. None of these results exceeded the federal maximum contaminant level for arsenic, which is 10 micrograms per liter. This means that, according to this area-wide data, arsenic is detected but remains below the federal health-based threshold in these sampled wells. It is important to understand that these results reflect aquifer conditions and do not define the arsenic concentration in any individual household’s water. Confirming the arsenic content in your own water requires specific laboratory testing of your well or tap water.
How Autotrol Technology Addresses Arsenic in Household Water
The Autotrol Arsenic Filter uses a specialized filtration system designed to reduce arsenic levels effectively through adsorptive media. As water passes through this system, arsenic compounds are captured within the filter material, which reduces the concentration before the water reaches household fixtures. This process targets arsenic specifically, helping to improve water quality where testing shows concentrations that warrant treatment. The equipment ships ready to configure for household use and can be applied as a solution when water testing confirms arsenic levels of concern.
Comparing Walworth County’s Arsenic Data to Neighboring Areas
When reviewing arsenic data from other counties near Walworth, it is essential to consider differences in aquifer characteristics, sampling methods, and well depths. Aquifer 110QRNR is a distinct geological formation with its own water quality profile. Neighboring counties may rely on different aquifers or have varying arsenic influences due to local geology. A direct comparison should be approached cautiously and with attention to sampling scope and depth differences to avoid misinterpreting regional water quality contrasts.
The Influence of Plumbing Materials and System Age on Arsenic Levels
Arsenic presence in water originates from the source aquifer and is not introduced by household plumbing materials or pipe age. While plumbing can affect other water quality factors, arsenic levels reflect what is drawn from the well or municipal supply before any interaction with the home’s plumbing system. Therefore, the material composition or condition of pipes does not increase or reduce arsenic concentration but can affect water quality in other ways.
Recognizing Symptoms Related to Arsenic in Household Water
Arsenic itself does not cause immediate or easily noticeable changes in water taste, odor, or color. Therefore, standard household water use symptoms such as staining, sediment, or unusual smells do not reliably indicate arsenic presence. The only way to determine arsenic contamination is through certified laboratory water testing. Absence of visible or sensory symptoms should not be assumed to rule out arsenic presence.
Fixtures and Uses Most Impacted by Arsenic Contamination
The greatest concern with arsenic in household water lies with consumption and cooking, where water ingestion leads to exposure over time. Fixtures used for drinking, food preparation, and ice making are the primary points of concern. Other household water uses, such as bathing or cleaning, generally pose less risk due to lower absorption through skin or incidental contact.
Choosing between technical treatment approaches depends largely on your own measured arsenic level and household needs. The Autotrol Arsenic Filter offers a proven option for reducing arsenic concentrations effectively when testing indicates a demand for treatment.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2021-05-25. 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 110QRNR aquifer (Walworth County): 3 results from 1 wells, median 2.2 ug/L, range 1.5-2.8 ug/L; none above any federal threshold


