This week, your household faces a straightforward but important choice: how to address volatile organic compounds (VOCs) in your water supply. Since Wood County's water system relies on surface water, we can use government data to understand what VOCs may be present and decide on a technical approach to protect your home's water use.
What 'Not Detected' Means at Method Detection Limits
Government monitoring of the City of Perrysburg's public water system in Wood County shows that most VOCs, including 1,1-dichloroethane, chloromethane, bromomethane, Halon 1011, and 1,3-butadiene, were not detected above their respective method detection limits during the 2013-2015 EPA survey. A 'not detected' result means the concentration was below the level the laboratory could reliably measure, not necessarily that the compound is completely absent. For example, the detection limit was 0.03 micrograms per liter (µg/L) for 1,1-dichloroethane. Such results indicate that any VOCs present, if any, are at very low concentrations—below the smallest quantities this testing method can identify.
Comparing Gasoline Versus Dry-Cleaning Sources of VOCs
VOCs can enter water from different sources, which influences the types of compounds found. Releases linked to gasoline spills tend to include compounds like benzene and toluene, whereas dry-cleaning operations more commonly involve chlorinated solvents such as perchloroethylene. The monitored compounds for the Perrysburg system focus on solvents and industrial chemicals rather than petroleum constituents. Understanding the source helps identify which solvent compounds to test for and which technical treatment is best suited to address them.
How Plumbing Material and Age Affect VOC Presence
VOCs measured in the public source water do not account for changes inside a home’s plumbing. Older plumbing materials or those with certain plastics or rubbers may interact with VOCs differently or even introduce some volatile compounds themselves. This means the VOC profile at a tap can differ from the public water system’s source water. Both the water source and household plumbing contribute to the VOC exposure, so testing your home's water directly is essential to confirm your water’s VOC content.
Why Granular Activated Carbon Bed Size Prioritizes Contact Time
The effective removal of VOCs depends heavily on the contact time between water and the media used in the treatment system. A granular activated carbon (GAC) bed sized primarily for contact time ensures volatile organics have sufficient interaction with the carbon surface to adsorb effectively. Simply increasing flow rate without adequate contact time will reduce removal performance. The Pentair VOCs & Industrial Chemicals Filter uses this principle to target solvent compounds efficiently.
How Sampling Depth and Source Type Influence VOC Expectations
Sampling from surface water sources like Perrysburg’s system tends to show different VOC profiles than groundwater wells. Surface waters are more exposed to runoff and atmospheric sources but also typically have more dilution and natural breakdown of contaminants. Depth of sampling and the nature of the water source influence both which VOCs might be present and their concentrations. Wood County’s surface water source reflects this variability, which government data capture but do not fully predict for any individual household.
Interpreting the Measured VOC Range Relative to Federal Standards
The detected concentration of HCFC-22 in one sample was 0.081 micrograms per liter (0.081 ppb), just above the laboratory’s reporting level but far below any federal maximum contaminant level (MCL) because no MCL exists for these VOCs under the EPA’s Unregulated Contaminant Monitoring Rule (UCMR3). This means the presence of VOCs at these low levels is a measurement, not an exceedance or a safety concern based on federal health standards. The absence of a federal MCL for these compounds means regulatory compliance cannot be assessed, only presence or absence.
Choosing the Right VOC Testing for Your Household
To settle the question of VOC presence in your household water, the crucial step is to order a comprehensive VOC water analysis from a certified laboratory. This test will reveal which volatile organics are present and at what concentrations in your actual water supply, including the effects of your home’s plumbing. Once you know your water’s VOC profile, you can decide if a treatment like the Pentair VOCs & Industrial Chemicals Filter, designed to reduce a broad range of solvent compounds using a carefully sized activated carbon bed, is the appropriate solution for your household’s water quality needs.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2015-04-30. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR3 monitoring (2013-2015) for City of Perrysburg (OH8701803), OH: 72 results across 6 listed contaminants, 1 detections above the reporting level; no federal MCL for these UCMR-listed VOCs