Nitrate in Cumberland County Water: What Area Sampling Reveals About Aquifer 121CKKD

How Sampling Depth and Well Type Affect Nitrate Expectations

Range of Well Depths Sampled in Aquifer 121CKKD

US Geological Survey samples in Cumberland County were collected from wells ranging from 11 to 181 feet deep. This variation means nitrate measurements reflect multiple groundwater layers, so your well depth can influence nitrate levels.

Impact of Aquifer Characteristics on Nitrate Levels

The area’s aquifer 121CKKD shows low nitrate detections overall, suggesting nitrate dilution or natural attenuation at certain depths and well types.

Reading Certified Laboratory Test Results for Nitrate

What a Certified Lab Reports for Nitrite/Nitrate

Tests typically report concentrations in milligrams per liter (mg/L). Results will indicate 'detected' when measurable nitrate or nitrite is found and 'below reporting limit' when not.

Difference Between Nitrite and Nitrate Measurements

Though related, nitrite is often measured as an indicator alongside nitrate; both can appear in groundwater but have different regulatory and health interpretations.

Understanding 'Detected', 'Median', and 'Range' in This Sampling

Summary of Detected Levels in Cumberland County Aquifer

Out of 176 samples from 49 wells, nitrite was detected in 30 samples, with a median of 0.004 mg/L and a range from 0.001 to 0.048 mg/L. The majority (146 samples) were below detection limits, indicating low overall presence.

What Median and Range Communicate About Variability

The median shows the middle value of all detected samples, providing a typical level, while the range shows the lowest and highest recorded within sampled wells.

What These Levels Mean Relative to Federal Standards

Comparison Against Federal Nitrate and Nitrite Thresholds

No samples exceeded any federal limit for nitrite or nitrate. This means area measurements have not identified concentrations above levels considered a health concern by federal agencies.

What This Does Not Guarantee for Individual Wells

Regional sampling does not reflect the nitrate level in your specific household well. Local conditions, land use, and well construction can cause differences that require direct testing.

Influence of Plumbing Materials and Age on Nitrate Measurement

Effect of Plumbing on Water Chemistry

Nitrate itself is not typically altered by plumbing materials, but older pipes or certain materials can affect readings of other water constituents that might interact with nitrate chemistry.

Importance of Distinguishing Source Water from Distribution

Testing source water directly is essential as plumbing factors may alter water appearance or taste without changing nitrate levels substantially.

Information to Gather Before Considering Treatment for Nitrate

Record Your Well Depth and Construction Details

Knowing your well’s depth and type helps interpret test results and understand potential nitrate presence based on regional data.

Obtain Certified Laboratory Test Results Specific to Your Water

Only a certified test of your own water can confirm nitrate levels; regional data are guides but not definitive for your household.

In summary, USGS sampling shows that nitrate and nitrite detections in Cumberland County’s aquifer 121CKKD are generally low and below federal thresholds. To determine your household water’s nitrate status, obtain a certified lab test and note your well specifications. If treatment is desired based on your test, the C-Series Nitrate & Nitrite (Well) Filter ships ready to configure as a reliable option for nitrate reduction.

Where this information comes from

Source: USGS groundwater sampling. Sampled 2026-08-12. 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 Nitrite in the 121CKKD aquifer (Cumberland County): 176 results from 49 wells, median 0.004 mg/L, range 0.001-0.048 mg/L; none above any federal threshold