Autotrol Nitrate & Nitrite (Well) Filter

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How does Nitrate enter groundwater in McLean County's aquifer?

Nitrate typically originates from agricultural fertilizers, septic systems, and natural soil processes. In McLean County, the 110QRNR aquifer supplies groundwater used in many residential wells. The area's extensive farmland contributes nitrate to the groundwater through runoff and infiltration. Over time, these sources can lead to measurable nitrate levels at various depths, from 12 to over 300 feet. This regional influence means nitrate is present in the environment but does not determine individual well conditions without specific testing.

What is the recommended order to assess nitrate concerns in your water?

Start with a general observation: are there any changes in taste, color, or odor? Because nitrate is colorless and tasteless at low to moderate levels, visual or sensory clues are often absent. The next step is to confirm your water source and well depth, as local geology and aquifer characteristics influence nitrate presence. Finally, obtain a certified laboratory test specifically measuring nitrate concentration in your well water. This test is essential since government measures only show area trends and cannot substitute for your own data.

How to interpret the USGS nitrate data for McLean County homeowners

The US Geological Survey sampled 11 wells in this aquifer between 2010 and 2018, analyzing 96 samples. The median nitrate concentration was 0.808 mg/L, ranging from as low as 0.011 to as high as 45.3 mg/L. Of these, 64 samples showed nitrate detectable above reporting limits, and 16 samples exceeded the federal maximum contaminant level (MCL) of 10.0 mg/L, which is a health-based guideline. For a homeowner, this means nitrate has been found in this aquifer, sometimes at levels requiring attention. However, your well’s nitrate level can only be known through your own water testing.

Does plumbing material and age affect nitrate levels independently?

Nitrate is dissolved in water and does not interact chemically with common plumbing materials such as copper, PVC, or galvanized steel. Therefore, the plumbing system itself generally does not raise or lower nitrate concentrations. However, older plumbing can affect other water qualities, but these do not influence nitrate measurements. Your nitrate concern remains focused on the water source, not your home’s pipes.

What information should you prepare before seeking treatment advice?

Before considering treatment options, gather these details:

• Your well depth and construction details
• Most recent water quality report including nitrate levels
• Frequency of water use and household size
• Any history of nitrate issues or nearby agricultural activities

Having this data ready will help evaluate whether nitrate treatment technologies fit your needs and water characteristics.

What not to assume based on McLean County nitrate data

The area data from government sampling provides useful regional context but does not define your well’s nitrate concentration. Detection does not equal violation, and exceeding an aesthetic secondary standard is not a health violation. Only a certified lab test of your own water sample can establish your individual nitrate level and the need for treatment. Moreover, plumbing materials or house age are not factors in nitrate levels. For nitrate reduction, products like the Autotrol Nitrate & Nitrite (Well) Filter may be considered; these systems ship ready to configure for your household water use. Making decisions based on local data alone can lead to unnecessary or insufficient responses without your own water analysis.

Where this information comes from

Source: USGS groundwater sampling. Sampled 2018-08-01. 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 Nitrate in the 110QRNR aquifer (McLean County): 96 results from 11 wells, median 0.808 mg/L, range 0.011-45.3 mg/L; 16 above a health-based federal MCL (federal MCL 10.0 mg/L)