Why Granular Activated Carbon Filters Are Sized for Contact Time, Not Just Flow
Many homeowners misunderstand how filtration systems for volatile organic compounds (VOCs) operate, assuming flow rate alone determines effectiveness. In reality, a granular activated carbon (GAC) bed’s ability to reduce VOCs depends heavily on contact time — the duration water spends interacting with the carbon media. Longer contact times improve the adsorption of solvent compounds such as 1,1-dichloroethane, a VOC detected in South Adams County water system samples. Simply increasing flow speed can reduce removal efficiency because water passes too quickly for thorough treatment.
How Seasonal Water-Table Changes Influence Solvent Plume Positions Near Well Screens
Water-table fluctuations throughout the year alter groundwater flow patterns and the location of solvent plumes containing volatile organics. In Adams County, surface water supplies can see these shifts move a VOC plume closer to or farther from a public well screen. This natural movement means concentrations detected in system-wide monitoring can vary over time. Understanding these dynamics is important since a homeowner’s water quality depends on their specific well’s exposure to these seasonal changes, which government occurrence data cannot specify.
How the Documented Treatment Technology Removes or Neutralizes VOCs
The Fleck VOCs & Industrial Chemicals Filter utilizes a granular activated carbon system designed for enhanced contact time, targeting VOCs such as 1,1-dichloroethane detected in your area's public water system record. This technology adsorbs volatile organic compounds onto the carbon media, reducing their presence in the treated water. While it does not chemically neutralize VOCs, its physical adsorption process lowers compound concentrations, improving water quality in residential settings where existing equipment has failed.
Why Volatility Matters: Showering, Dishwashing, and Inhalation Exposure
Volatile organics are not only a concern when drinking water but also during activities like showering and dishwashing. VOCs can volatilize into household air, making inhalation a potential exposure route. Considering that VOCs such as 1,1-dichloroethane have measurable vapor pressure, controlling their presence in water reduces airborne exposure. Therefore, treating VOCs at the point water enters the home helps limit inhalation risks along with ingestion.
A Worked Example: Interpreting the Median and Range of VOC Levels in South Adams County Water
Between 2013 and 2015, South Adams County’s public water system monitored for 1,1-dichloroethane, detecting it in 16 of 28 samples with levels ranging from just above 0.03 micrograms per liter (µg/L or parts per billion) to 0.49 µg/L. The median detected level was approximately 0.24 µg/L. While there is no federal maximum contaminant level (MCL) for this VOC, these figures provide a context for understanding potential solvent compound presence in the system's water, not any individual household’s water. To know your own home's VOC concentration, a specific water test is necessary.
How to Judge Treatment Capacity Against Your Household's Daily Demand
Assessing a VOC filtration system’s capacity requires matching the filter’s rated throughput to your household’s daily water usage. Consider all water draws including drinking, cooking, showering, and laundry. The Fleck VOCs & Industrial Chemicals Filter ships ready to configure with specifications suited to residential demands. Ensuring that the filter’s contact time and flow capacity align with your home's volume needs is key for effective VOC reduction.
In summary, the Fleck VOCs & Industrial Chemicals Filter offers a proven solution for Adams County residents contending with volatile organics after equipment failure. By sizing treatment based on contact time and daily demand while understanding the seasonal groundwater influences, homeowners can better manage solvent compounds detected in the area's water system data.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2014-02-10. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR3 monitoring (2013-2015) for South Adams County WSD (CO0101140), CO: 184 results across 7 listed contaminants, 16 detections above the reporting level; no federal MCL for these UCMR-listed VOCs

