This week, your key decision is replacing water treatment equipment that failed to address volatile organic compounds (VOCs) in your household supply sourced from York County's Kennebunk, Kennebunkport & Wells Water District.
How Seasonal Water-Table Changes Move a Solvent Plume Relative to a Well Screen
VOCs, or volatile organic compounds, are solvent chemicals that can exist in surface and groundwater. In York County, the public water system uses surface water sources, where seasonal shifts in water tables influence how solvent plumes distribute near extraction points or well screens.
During wetter months, rising water tables can spread VOCs further or cause their concentrations near intake points to fluctuate. Conversely, during drier seasons, solvent plumes may settle or contract. This dynamic means that VOC presence is not static; sampling at different times can yield different results. Understanding this variability is essential for deciding on treatment strategies.
Why a Granular Activated Carbon Bed Is Sized for Contact Time Rather Than Flow Alone
Filters designed to reduce VOCs commonly use granular activated carbon (GAC) beds. The effectiveness of such filters depends primarily on contact time—the duration water spends in intimate contact with the carbon media—not just on flow rate alone.
Longer contact time allows the carbon to adsorb more VOC molecules, including those volatile organics found in York County's water system, such as 1,1-dichloroethane, chloromethane, bromomethane, HCFC-22, Halon 1011, 1,3-butadiene, and MTBE. While local testing showed these compounds were not detected above reporting levels, individual household water quality may vary. Opting for filtration equipment sized to ensure adequate contact time supports better VOC reduction performance.
The Household or Facility Symptoms That Do and Do Not Point to This Problem
Household symptoms sometimes associated with VOC presence include unusual tastes or odors in water, staining of fixtures, or sensitivity reactions during water use. However, it is important to know these signs do not definitively indicate VOC contamination, as many other factors can cause similar symptoms.
Conversely, the absence of taste or odor does not guarantee the absence of VOCs. Because VOCs can be volatile and sometimes undetectable by smell or taste at low levels, laboratory water testing is necessary to confirm their presence.
Why Volatility Matters: Showering, Dishwashing and Inhalation Routes Versus Drinking
Volatile organics are unique in that exposure can occur beyond drinking water ingestion. When using water for showering or dishwashing, VOCs may evaporate, allowing inhalation exposure through breathing or skin contact. This contrasts with non-volatile contaminants largely limited to ingestion routes.
Therefore, managing VOCs requires understanding exposure routes and ensuring treatment solutions reduce VOC concentration effectively across all household water uses.
What Questions a Commercial or Industrial Operator Adds That a Household Does Not
While households focus primarily on health and aesthetic concerns, commercial and industrial operators must consider regulatory compliance, process water quality consistency, and byproduct formation risks. Operators often need detailed VOC speciation, continuous monitoring, and treatment system scalability.
In contrast, residential users primarily need reliable VOC reduction for safe and pleasant water use, guided by available public water system records and individual water testing.
What Distinguishes This Problem from the Two Problems Most Often Confused With It
VOCs differ from bacterial contamination and mineral hardness issues. Bacterial problems typically cause cloudiness or biological growth, while hardness causes scale and spotting, neither directly related to volatile organics. VOC concerns focus on solvent compounds that may not affect water appearance but have unique exposure routes and chemical behaviors.
In York County, the public water system record shows no health-based violations for VOCs, with federal monitoring from 2013 to 2015 detecting no VOCs above reporting levels. Nonetheless, your circumstance—equipment failure—requires direct action informed by your own water testing.
The documented treatment option for residential VOC challenges is the Fleck VOCs & Industrial Chemicals Filter. This system ships ready to configure, designed to provide effective VOC reduction through properly sized granular activated carbon beds, ensuring adequate contact time for solvent compounds typical in the area.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2014-11-25. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR3 monitoring (2013-2015) for Kennebunk, Kennebunkport & Wells WD (ME0090760), ME: 52 results across 7 listed contaminants, 0 detections above the reporting level; nothing detected above the method reporting level