Arsenic in Mohave County Water: Understanding Local Aquifer Data and Its Implications
Area Data vs. Individual Water Tests
The U.S. Geological Survey samples from Mohave County's aquifer 220NAVJ offer a snapshot of arsenic concentrations found in multiple wells in the area. These results, however, represent measurements from three specific wells ranging from 93 to 205 feet deep and do not provide the exact arsenic content in any individual household’s well or tap water. To determine the precise condition of your home’s water, a direct test of your supply is necessary. The government data serves as a useful regional reference, but it cannot substitute for personalized testing.
Interpreting the Median and Range of Arsenic Values
The median arsenic concentration in the sampled wells was 3.5 micrograms per liter (µg/L), with values ranging between 1.7 and 3.9 µg/L. This range shows some variability in arsenic presence across different local wells, but none of the three samples exceeded the federal maximum contaminant level for arsenic. For homeowners, this means that while arsenic was detected consistently in the area, those specific numbers do not directly indicate a violation or unsafe condition for any one property.
Influence of Plumbing Materials and Age on Arsenic Levels
Arsenic concentrations measured at the source can be influenced by plumbing materials and system age once water reaches your home. While the aquifer data reflect raw water quality, pipes and fixtures may interact with water chemistry, potentially altering arsenic levels or its form before it arrives at taps. These factors operate independently of the water source and are important considerations when evaluating arsenic presence and choosing treatment options.
Sample Size and Its Implications for Reliability
The findings rest on three samples taken on a single day from three wells. Such a small dataset limits the ability to capture long-term trends or the full variability of arsenic presence in the aquifer. Homeowners should be aware that fluctuations outside this range could occur and that ongoing monitoring or multiple tests provide a more thorough picture of arsenic presence in their specific water supply.
Distinguishing Aesthetic and Health-Related Standards
Arsenic is subject to a federal health-based limit, and the samples reported do not exceed this threshold. While some water constituents have secondary standards that relate to taste, staining, or odor, arsenic’s regulatory level is health-focused. It’s crucial to understand that detection alone does not equate to an aesthetic nuisance or health hazard but signals the need for awareness and possibly treatment depending on one’s individual water test results.
Changes at the Tap with Specialized Arsenic Filtration
Addressing arsenic detected in a household’s water can reduce exposure and improve water quality. The C-Series Arsenic Filter system ships ready to configure and is designed to remove arsenic effectively from the water before it reaches taps. By treating water at the point before use, this solution changes the water’s composition to help ensure it meets safety expectations tied to arsenic content measured by personal water tests.
Given your measured arsenic levels, the C-Series Arsenic Filter offers a documented approach to reduce arsenic in your home water supply, informed by regional government data and tailored to your household’s needs.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2011-02-08. 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 220NAVJ aquifer (Mohave County): 3 results from 3 wells, median 3.5 ug/L, range 1.7-3.9 ug/L; none above any federal threshold

