1. What a Certified Laboratory Test for Nitrate Reports and How to Read It
Test results are expressed in milligrams per liter (mg/L)
Laboratory analysis of water samples measures nitrate concentration typically in mg/L, indicating the amount of nitrate present per liter of water tested.
Reports specify nitrate as nitrogen (NO3-N) or nitrate ion (NO3)
It's important to note whether the report lists nitrate as nitrate ion or as nitrate nitrogen; the federal standard applies to nitrate expressed as nitrate nitrogen.
Results include a detection limit and actual concentration values
The report shows the minimum level the laboratory can detect along with the measured concentration if above this limit.
Federal maximum contaminant level (MCL) for nitrate nitrogen is 10.0 mg/L
This is the health-based threshold established to protect sensitive populations such as infants.
2. What the Measured Range Means Against the Federal Standard, and What It Does Not Mean
Median nitrate in Sedgwick County aquifer wells is 4.53 mg/L
This median value, based on 552 samples from 27 wells, indicates typical nitrate levels in the area's groundwater but does not describe any one household's water.
Some samples exceed the federal MCL of 10.0 mg/L, but many do not
Out of all results, 162 samples were above 10.0 mg/L, showing that nitrate concentrations can vary widely within the aquifer.
Detection in a well sample does not imply a violation or unsafe water
Finding nitrate in a well sample simply means it was measurable; whether it poses health concerns depends on the level relative to the MCL.
Variability in sample depths (25 to 248 feet) affects nitrate readings
Different depths can show different nitrate levels; thus, local well depth and geology influence your water's nitrate concentration.
3. How the Treated Water Differs at the Tap Once the Documented Technology Is in Place
Treated water nitrate concentration is reduced below health-based limits
Systems using a proven nitrate and nitrite filter lower nitrate levels to meet or fall below the federal MCL, improving safety for household use.
The Autotrol Nitrate & Nitrite (Well) Filter ships ready to configure for home water treatment
This equipment uses a reliable technology to reduce nitrate and nitrite in well water, tailored to household needs in affected regions.
Treated water maintains essential minerals while removing excess nitrate
The technology selectively targets nitrate and nitrite without stripping beneficial minerals from your water.
Consistent water quality monitoring after treatment is recommended
Periodic testing ensures the system continues to perform effectively and that nitrate levels remain within safe limits at the tap.
4. The Order in Which to Rule Things Out, from Cheapest Check to Laboratory Test
Start by reviewing local water quality reports
Check regional groundwater data such as Sedgwick County's aquifer nitrate statistics to understand area-wide trends.
Conduct a visual and sensory inspection of your water
Note any color, taste, or odor changes but remember nitrate itself is colorless and odorless.
Test for nitrate with a certified laboratory analysis
Obtain an accurate nitrate test from an accredited lab to determine your household water quality precisely.
Compare your lab results with the federal nitrate MCL of 10.0 mg/L
This comparison clarifies if treatment is advisable based on your water's nitrate levels.
5. What the Reader Should Write Down Before Asking Anyone for Treatment Advice
Details of your water source depth and type (well or municipal)
This information helps contextualize nitrate presence and potential treatment options.
Exact lab results specifying nitrate concentration and measurement units
Having clear test data allows for informed decision-making tailored to your water condition.
Local groundwater nitrate range and median from official sources
Referencing Sedgwick County's aquifer data provides a benchmark for your water quality.
Household water usage patterns and family health considerations
Understanding your water demand and sensitivities ensures the selected treatment fits your needs.
Government groundwater sampling in Sedgwick County's aquifer 112PLSC, with 552 samples from 27 wells sampled between 2010 and 2023, shows a nitrate median of 4.53 mg/L and a range from 0.0 to 189.0 mg/L. For more information, visit the U.S. Geological Survey monitoring location 375327097285401.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2023-11-14. 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 112PLSC aquifer (Sedgwick County): 552 results from 27 wells, median 4.53 mg/L, range 0.0-189.0 mg/L; 162 above a health-based federal MCL (federal MCL 10.0 mg/L)