Fayetteville's Water System and VOC Sampling Results
The Lincoln County Board of Public Utilities #1 serves Fayetteville with surface water as its source. According to the EPA's Unregulated Contaminant Monitoring Rule (UCMR3) data collected from 2013 to 2015, multiple volatile organic compounds (VOCs) commonly monitored in public water systems were not detected above reporting levels in this system. These VOCs include 1,1-dichloroethane, chloromethane, bromomethane, HCFC-22, Halon 1011, 1,3-butadiene, and MTBE. Importantly, this system has no recorded health-based violations per EPA standards. This provides a broad view of VOC presence in the system rather than in any individual household water supply.
Why a Granular Activated Carbon Bed Is Sized for Contact Time Rather Than Flow Alone
Filters designed to address VOCs work by adsorbing the dissolved volatile organics onto granulated activated carbon. The effectiveness depends heavily on contact time — the duration water spends in contact with the carbon — because volatile organics require adequate exposure to bind properly. Simply increasing flow rates can reduce contact time, diminishing removal efficiency. Therefore, sizing the carbon bed prioritizes ensuring sufficient contact time over just the volume of water flow to effectively reduce VOC levels in household water.
How Gasoline Releases Differ from Dry-Cleaning Releases in Groundwater Impact
Gasoline releases typically involve a complex mixture of hydrocarbons and related solvents often seen near fueling stations, affecting groundwater with petroleum-based VOCs. Dry-cleaning solvent releases, in contrast, often involve chlorinated solvents like perchloroethylene, which behave differently in water and require different treatment approaches. Understanding which VOCs are more likely to be present helps guide appropriate filtration strategies. Fayetteville's public system data did not show detections of several monitored VOCs connected with such sources during the EPA’s survey.
Distinguishing VOC Concerns from Other Water Quality Issues
VOCs or volatile organic compounds differ markedly from common water problems such as sediment, hardness, or iron staining. They are solvent compounds that can volatilize into air and may be inhaled during water use, unlike mineral scale or particulates. Unlike microbiological contaminants, VOCs are chemical in nature. Because some VOCs are volatile, their presence may impact indoor air quality via inhalation during showering or dishwashing. This distinction helps in focusing testing and treatment efforts specifically on chemical removal.
Sample Sizes and Interpretation: What the Number of Wells and Tests Tell Us
The EPA’s Fayetteville system data is based on multiple sampling events—16 results for most VOCs, 15 for MTBE—collected from a public water system serving approximately 23,846 people. This sample size offers a meaningful characterization of the water source's typical VOC content over time. However, these are system-wide results and do not represent any individual household’s water quality. Homeowners concerned about VOCs should arrange for testing of their own water to obtain a precise understanding of their specific situation.
Why Volatility Matters: Exposure From Showering, Dishwashing, and Drinking
VOCs’ volatility means they can transition from water to air during activities like showering or dishwashing, making inhalation a significant route of exposure in addition to drinking. This distinguishes VOC-related concerns from other water contaminants that remain dissolved. Addressing VOCs in household water can therefore improve indoor air quality and reduce inhalation exposure, especially in residential settings where existing equipment has failed to control these compounds effectively.
Seasonal and Multi-Year Variation in VOC Monitoring
The Fayetteville system’s VOC measurements span from January 2002 to July 2015, providing a broad temporal view. Over this period, no detections above reporting levels occurred in the monitored VOC compounds, highlighting stability in the system’s quality with respect to these compounds. Still, fluctuations can occur, and single sampling events at a home may differ from system averages. Continuous or periodic sampling is recommended for households wishing to track changing VOC levels.
Addressing VOCs With a Proven Filtration Solution
For households in Fayetteville experiencing VOC issues and previously relying on equipment that no longer functions as needed, the Pentair VOCs & Industrial Chemicals Filter offers a technology designed for effective removal of volatile organic compounds. It employs a granular activated carbon system optimized for proper contact time and solvent compound adsorption. This unit ships ready to configure for residential water treatment, providing a documented approach to managing VOCs based on regional water characteristics and household testing results.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2015-07-07. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR3 monitoring (2013-2015) for Lincoln County Board of Public Utilities #1 (TN0000764), TN: 111 results across 7 listed contaminants, 0 detections above the reporting level; nothing detected above the method reporting level