Does the range of fluoride detected mean your household water exceeds federal standards? Not according to the USGS data.
The U.S. Geological Survey sampled groundwater from wells in Coconino County's aquifer 374MUAV, with measurements spanning from 0.23 to 0.34 milligrams per liter and a median of 0.31 mg/L. These samples, collected between 2013 and 2025, originated from a well approximately 3,086 feet deep. None of these readings surpassed any federal limits for fluoride, indicating no regulatory exceedances in this aquifer area. However, these results do not directly specify your household water's concentration since local wells can vary significantly.
Why do commercial or industrial concerns differ from residential when evaluating fluoride data?
Commercial and industrial water users often require detailed records on maximum fluoride levels, fluctuations, and potential correlations with specific well depths or seasonal changes. While households primarily focus on whether fluoride presence might impact taste, appliance longevity, or long-term exposure, commercial operations may need to consider fluoride’s effects on manufacturing processes or regulatory compliance for discharge permits. This regional data provides a foundation but is less granular than industrial users might require.
What maintenance should you expect from technology designed to address fluoride?
The Pentair Fluoride Filter system ships ready to configure for your household water treatment. Routine maintenance involves periodic replacement of the filtration media according to product guidelines, which ensures continued efficacy in reducing fluoride levels. This system does not require specialized servicing visits and can be managed by the user following the included instructions for upkeep.
What do 'detected,' 'median,' and 'range' indicate in this fluoride sampling record?
In the USGS data, 'detected' means measurable fluoride was found in every sample taken—a consistent presence rather than an absence. The 'median' value of 0.31 mg/L represents the middle measurement when all samples are ordered numerically, illustrating a typical fluoride concentration in the area. The 'range' from 0.23 to 0.34 mg/L reflects the spread between the lowest and highest fluoride levels measured, showing relatively little variability in this data set.
How can a household interpret the median and range figures for practical use?
Imagine your own water sample falling near the median; it suggests your fluoride concentration would be in the lower third of federal limits, assuming similar aquifer characteristics. The narrow range also indicates that large fluctuations are unlikely within this specific aquifer. However, only a direct test of your household water can confirm this, as local geologies and well constructions can differ.
How to evaluate if the Pentair Fluoride Filter’s capacity matches your daily water use?
Household water consumption varies but typically ranges from 80 to 100 gallons per person per day. The Pentair Fluoride Filter is designed to handle residential demands and comes with specifications to guide selection based on daily flow and fluoride reduction needs. Comparing your household water use with the product’s documented treatment rate ensures the filter capacity aligns with your water consumption.
In summary, USGS groundwater sampling from a well 3,086 feet deep in Coconino County aquifer 374MUAV confirms fluoride consistently appears in area water within a narrow range below federal standards. These findings, publicly accessible through the U.S. Geological Survey, provide a regional backdrop but do not substitute for individual water testing when assessing household fluoride levels or treatment needs.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2025-05-20. 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 Fluoride in the 374MUAV aquifer (Coconino County): 11 results from 1 wells, median 0.31 mg/L, range 0.23-0.34 mg/L; none above any federal threshold