1. What to Write Down Before Asking Anyone for Treatment Advice

Note the exact smell features you experience

Describe whether the sulfur smell is constant or intermittent, and if it varies by tap or water use time of day.

Record the history of your current water equipment's performance

Include when the sulfur smell began or worsened relative to the failure or change in your existing water treatment equipment.

Gather any recent water tests you have performed

If you have a certified laboratory test for your well or tap water showing sulfide or related compounds, keep that ready to compare to regional data.

2. How Many Samples and Wells Stand Behind the Figures, and What a Small Sample Means

James City County aquifer 110QRNR sulfide samples come from 11 results

These results were collected from 10 separate wells, each ranging from 7 to 29 feet deep, providing a basis for regional understanding.

The data represents a snapshot over just three days in November 2017

Samples from November 20 to 22, 2017, provide limited but focused insight into sulfide presence in this aquifer area.

Small sample size means regional information is indicative, not specific

While these data points help outline typical sulfide levels in this aquifer, your well's actual water quality requires specific testing to confirm.

3. How Seasonal or Multi-Year Variation Shows in the Record

Sampling occurred over a short period and does not show seasonal change

The November 2017 dates provide a brief window into sulfide levels, without capturing fluctuations across seasons or years.

Range of sulfide detected spans from 4.0 to 367.0 mg/L

This wide range suggests that sulfide levels can vary significantly between wells even within the same aquifer.

Median sulfide concentration is 16.0 mg/L within sampled wells

This median offers a reference point around typical sulfide presence but should not be interpreted as your water's concentration.

4. How the Documented Treatment Technology Removes or Neutralises the Constituent

The C-Series Rotten-Egg Sulfur Smell Filter targets sulfide compounds

This equipment uses a specialized filtration process designed to remove the sulfur compounds responsible for the characteristic odor in home water.

The system ships ready to configure for home water use

It is prepared for integration with existing water setups, working to reduce or eliminate sulfur smell without requiring professional service for setup.

This technology addresses the aesthetic impact of sulfur smell, not water safety limits

The filter focuses on improving water taste and odor caused by sulfide but does not imply any health risk has been found or evaluated.

5. What 'Detected', 'Median' and 'Range' Mean in the Sampling Record on This Page

'Detected' means the presence of sulfide was measured

All samples showed sulfide detected, indicating the compound exists in this aquifer area but without specifying concentration for each individual well.

'Median' indicates the middle value from the sample set

The median of 16.0 mg/L is the concentration with an equal number of samples above and below it, summarizing the typical sulfide level among the sampled wells.

'Range' describes the spread between the lowest and highest measurements

From 4.0 mg/L to 367.0 mg/L, the range reflects variability in sulfide presence across different wells and conditions within the area.

Conclusion: What You Should NOT Conclude From Area Data

These government-sampled sulfide measurements illustrate typical conditions across multiple wells in James City County but do not define the exact sulfide concentration in your home's water. A certified test of your own well or tap water is necessary to determine your specific water quality and treatment needs.

Additionally, no result from these samples exceeded federal thresholds for water safety, so the presence of sulfide here does not indicate a health violation or unsafe water. The C-Series Rotten-Egg Sulfur Smell Filter is a practical solution focused on removing the odor and aesthetic issues associated with sulfide in water after your existing equipment has ceased functioning effectively.

Where this information comes from

Source: USGS groundwater sampling. Sampled 2017-11-22. 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 Sulfide in the 110QRNR aquifer (James City County): 11 results from 10 wells, median 16.0 mg/L, range 4.0-367.0 mg/L; none above any federal threshold