Residents in El Paso County might notice a faint chemical taste or variability in water clarity at their taps, which can lead to questions about nitrate levels in their water. While such symptoms alone do not conclusively indicate nitrate presence, understanding local groundwater data is a good starting point.
How Many Samples and Wells Stand Behind the Figures, and What a Small Sample Means
The U.S. Geological Survey conducted groundwater sampling in El Paso County's aquifer 111VLFL, collecting 149 nitrate and nitrite measurements from 17 separate wells between February 2010 and August 2024. These wells were sampled at depths ranging from 36 to 183 feet. Although this is a valuable dataset for the region, it represents only specific points and times and is not a direct measurement of any individual household's water supply.
How to Judge Treatment Capacity Against the Household's Daily Demand
When considering treatment for nitrate, it's important to know the volume of water your household uses daily. Treatment systems vary in capacity, so evaluating how many gallons per day your household typically consumes helps ensure adequate flow and effective contaminant removal. This assessment guides selecting a solution that matches your daily water needs without compromising performance.
The Household Symptoms That Do and Do Not Point to This Problem
Some households may observe cloudy water, metallic taste, or staining, but these signs do not specifically correlate with nitrate presence. Elevated nitrate levels generally have no noticeable taste or odor. Health risks from nitrate relate primarily to ingestion, particularly for infants and pregnant women. Without a lab test, symptoms alone cannot reliably indicate nitrate concentration in household water.
How Sample Depth, Well Depth or Source Type Changes What a Reader Should Expect
The 17 wells sampled varied in depth from 36 to 183 feet. Generally, deeper wells might have different nitrate levels compared to shallower ones due to factors like soil composition and agricultural practices affecting surface runoff. Groundwater from shallow wells may be more prone to nitrate contamination from surface sources, while deeper aquifers might show lower or more stable levels. Knowing your well depth offers important context for interpreting your water quality test.
What the Measured Range Means Against the Relevant Federal Standard, and What It Does Not Mean
The USGS data recorded nitrate concentrations ranging from 1.17 to 11.8 milligrams per liter (mg/L) with a median of 5.32 mg/L. The federal maximum contaminant level (MCL) for nitrate is 10.0 mg/L. Two of the 149 samples exceeded this threshold. Detection is not synonymous with a violation or immediate health risk. Many samples fell below the federal MCL, indicating that nitrate levels vary significantly across the area. This variability underscores the importance of testing your own water, as local conditions can differ substantially from the sampled wells.
To address nitrate in household water, the Autotrol Nitrate & Nitrite (Well) Filter ships ready to configure. It is designed to reduce nitrate and nitrite concentrations effectively when sized and operated according to household water usage. This system provides a targeted approach to managing nitrate contamination based on measured water quality.
In summary, this data reflects nitrate concentrations detected in 17 wells sampled within El Paso County's aquifer 111VLFL. For more detailed information and updates, the U.S. Geological Survey's groundwater data page for this area remains the primary public source.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2024-08-21. 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 Inorganic nitrogen (nitrate and nitrite) in the 111VLFL aquifer (El Paso County): 149 results from 17 wells, median 5.32 mg/L, range 1.17-11.8 mg/L; 2 above a health-based federal MCL (federal MCL 10.0 mg/L)