Residential VOCs in Anne Arundel: Understanding Seasonal and Source Differences for Smarter Treatment
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VOC Reduction System Water Filter
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If Seasonal Water-Table Changes Shift Solvent Plumes Near Your Well Screen
It is a common misconception that volatile organic compounds (VOCs) concentrations in water remain steady throughout the year. Seasonal fluctuations in the water table can move a plume of solvent compounds up or down relative to a well’s intake screen. This movement affects the presence and concentration of VOCs such as 1,1-dichloroethane in the water drawn by private wells.
For homeowners in Anne Arundel County served by groundwater, these seasonal hydrological shifts can cause variability in VOC levels. The recorded Glen Burnie-Broadneck public water system results show low detections of 1,1-dichloroethane with no detections of other volatile organics like chloromethane or bromomethane. Still, a private well’s VOC concentration can vary depending on the depth and placement of the well screen relative to the shifting plume.
If Your VOC Source Resembles Gasoline Releases or Dry-Cleaning Releases in Groundwater
Knowing whether your VOC presence is connected to gasoline or dry-cleaning solvent releases makes a difference in understanding what compounds you might find. Gasoline releases typically bring a mixture of hydrocarbons and fuel additives into groundwater, while dry-cleaning solvents often include chlorinated compounds like 1,1-dichloroethane.
The Glen Burnie-Broadneck system monitoring detected 1,1-dichloroethane in two out of twelve samples (maximum 0.037 micrograms per liter, or parts per billion), which aligns with common dry-cleaning solvent profiles. Other VOCs such as MTBE, a gasoline additive, were not detected. Recognizing the likely source helps focus any necessary VOC target testing and appropriate filtration methods.
If Your Household Is Large, a Second Home, or Used Seasonally
Water usage patterns influence the effectiveness of any water treatment equipment. Larger households or those with second or seasonal homes may find existing treatment systems lagging in managing VOCs. This discrepancy can occur because fluctuating water demands affect contact time and filtration capacity for reducing volatile organic compounds.
Adjustments in treatment approach are advisable when existing equipment no longer meets your household’s needs. Because VOC reduction depends on adequate contact time with filtration media, households with variable or increased water use in Anne Arundel County may consider an upgraded system designed to handle these demands more reliably.
If You Rely on Public-System Records Versus Private Well Testing
Public water system records provide data about the water source and supply as a whole, not individual home water quality. The Glen Burnie-Broadneck system serving Anne Arundel County, supported by 83,272 connections, has no EPA health-based violations and recorded only occasional low-level VOC detections during federal occurrence monitoring.
These results cannot predict any single home’s water quality. Private well owners must obtain specific water tests to fully understand their individual VOC concentrations. Public system data offers regional context, showing what has been detected and the compounds of interest, but it cannot substitute for personal testing.
If You Want to Understand What the Recorded VOC Levels Mean
The federal monitoring summarized detections of VOCs including 1,1-dichloroethane and the absence of others like chloromethane and MTBE. These levels were well below any established federal maximum contaminant levels (MCLs), which cover legally enforceable health-based thresholds. Because no MCLs exist for many VOCs monitored under UCMR3, detections represent measured presence, not a violation or evidence of harm.
Understanding this distinction is crucial. A detection means a compound was found above the laboratory reporting limit, not that the water is unsafe. This clarity helps avoid misinterpretation of monitoring data and supports informed decisions on water treatment needs.
What Water Test to Order and How to Decide Next Steps
The only way to settle questions about your household's VOC levels is to conduct a certified water analysis specifically testing for volatile organic compounds including 1,1-dichloroethane and related solvent compounds. This test will provide precise measurements in your water supply, expressed in micrograms per liter (µg/L) or parts per billion (ppb).
If your existing water treatment system cannot keep pace with your household's demand or VOC load, the Pentair VOCs & Industrial Chemicals Filter ships ready to configure and is designed to reduce a broad range of solvent compounds effectively. Its design optimizes contact time with granular activated carbon media, tailored for volatile organic compound removal to meet residential needs in areas like Anne Arundel County.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2014-08-06. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR3 monitoring (2013-2015) for Glen Burnie-Broadneck (MD0020017), MD: 80 results across 7 listed contaminants, 2 detections above the reporting level; no federal MCL for these UCMR-listed VOCs