The groundwater supplying Frankfort, IL, part of Will County, flows through underground aquifers before reaching the public water system. This water passes through wells and treatment before arriving at your home's tap. Understanding how volatile organic compounds, often called VOCs or solvent compounds, behave in this environment can clarify your household water concerns.
If seasonal water-table changes move a solvent plume near your well screen
Groundwater levels can fluctuate with seasons, influencing where solvent plumes—subsurface areas containing VOCs—reside relative to well intakes. During wetter months, rising water tables might shift plume locations, potentially altering VOC concentrations drawn into the system. Conversely, drier periods can lower water levels, changing the connection between wells and contamination sources. These shifts mean the presence of VOCs in sampled water can vary over time even within the same system.
If you want to understand why volatility matters beyond drinking water
VOCs' volatile nature means they can evaporate from water during activities like showering, dishwashing, and cooking. This volatilization can lead to inhalation exposure routes inside the home, in addition to ingestion from drinking water. Considering these exposure pathways is important when evaluating treatment options that address dissolved VOCs in water but may not capture the risks from breathing vapors released during household use.
If you want to know how public-system records differ from private-well testing
The data for Frankfort's water system comes from EPA’s Unregulated Contaminant Monitoring Rule (UCMR3) and reflects results gathered from multiple sampling points serving about 24,000 people through over 10,000 connections. This data represents system-wide conditions rather than individual homes. Private wells might have different VOC levels depending on local geology and contamination sources. Conducting a private water test is the only way to determine the VOC concentrations in your household supply specifically.
If you wonder how aesthetic secondary standards differ from health-based limits
Government guidelines include secondary standards for constituents like chlorides or total dissolved solids related to taste, staining, or corrosion, but these are not health-based. For VOCs listed in the Frankfort system’s monitoring, no federal Maximum Contaminant Levels (MCLs) exist, and all detections were below reporting limits. This means the aesthetic thresholds apply differently, and detecting VOCs does not imply a violation or health risk under current regulations.
If you consider how many samples and wells inform the water quality figures
The Frankfort water system reported 18 samples for compounds such as 1,1-dichloroethane, chloromethane, bromomethane, HCFC-22, Halon 1011, 1,3-butadiene, and 14 samples for MTBE during the 2013-2015 monitoring period. No sample showed a detection above reporting limits, indicating very low or undetectable levels. While this comprehensive sampling provides confidence in system-wide VOC status, a smaller number or isolated sampling might not fully represent transient or localized variations near private wells.
What you should not conclude from area data: The absence of detections above reporting limits in system-wide monitoring does not guarantee individual household water is free from VOCs. It also does not signify a safety violation or unsafe conditions for Frankfort public water. These results serve as a regional snapshot rather than a specific well assessment.
For addressing potential VOC presence in household water, the Autotrol VOCs & Industrial Chemicals Filter is a documented technology known to reduce volatile organic compounds and industrial solvents effectively. It ships ready to configure for residential use, offering a treatment option after confirming your own water’s VOC levels through private testing.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2014-08-12. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR3 monitoring (2013-2015) for Frankfort (IL1970400), IL: 122 results across 7 listed contaminants, 0 detections above the reporting level; nothing detected above the method reporting level
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