Fleck 1,2,3-TCP Filter

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The EPA's public water system records for Fayette County, KY, served by KY American Water Co., show that 1,2,3-trichloropropane (1,2,3-TCP) was not detected above the federal reporting level during the 2013-2015 monitoring period. This means no measurement exceeded 0.03 micrograms per liter (µg/L), or 0.03 parts per billion (ppb). While there is no federal maximum contaminant level (MCL) for 1,2,3-TCP, a federal occurrence survey did include this constituent, and the presence of the chlorinated solvent at or below these low levels is typical for this surface water source.

If You Wonder Why 1,2,3-TCP Testing Uses Such a Low Reporting Level

1,2,3-TCP is a chlorinated solvent historically used as a solvent and soil fumigant impurity. Its potential health effects have led regulatory bodies to require monitoring at levels thousands of times lower than typical limits for common metals or other contaminants. The federal reporting level of 0.03 µg/L is very sensitive, reflecting the desire to detect even trace amounts. This low threshold ensures that water providers and residents are aware if any measurable quantity is present, even when it is far below established health-based limits.

If You Want to Understand How California's 5 ng/L Limit Compares to Federal Standards

California has set a state notification level of 5 nanograms per liter (ng/L) for 1,2,3-TCP, equivalent to 0.005 µg/L, which is more stringent than federal reporting thresholds and notably stricter than any existing federal MCL. In contrast, the absence of a federal MCL means the EPA does not currently enforce a maximum allowable concentration nationwide. The Fayette County water system’s non-detection above 0.03 µg/L suggests concentrations, if any, are below this federal reporting level, but it does not provide information about levels below that threshold or in relation to California’s limit.

If You Need Clarity About What a Certified Laboratory Test Reports for 1,2,3-TCP

When homeowners test their own water for 1,2,3-trichloropropane, certified laboratories measure the concentration in micrograms per liter (µg/L) or parts per billion (ppb). Tests report whether 1,2,3-TCP is detected above the lab’s reporting level. Because the federal reporting level is already very low, detections below this value are typically reported as 'not detected.' It is important to read test results carefully to understand the difference between detection and regulatory compliance: detection indicates a measured concentration above the lab’s minimum detectable limit but does not imply a health violation.

If You Consider the Role of Plumbing Materials and Age in 1,2,3-TCP Occurrence

Plumbing materials and the age of a home's internal water system do not affect 1,2,3-trichloropropane levels, since this chlorinated solvent originates from the source water. Unlike metals or minerals that can leach from pipes, 1,2,3-TCP presence depends on contamination in the water supply itself, such as residues from historic industrial or agricultural use. Thus, the detection or absence of TCP in your water is tied to treatment and source quality rather than household plumbing aging or materials.

If You Want to Understand What the Measured Range Means Compared to Federal Standards and What It Does Not Mean

The federally monitored range for 1,2,3-TCP in Fayette County’s public water system from 2013-2015 showed no detections above 0.03 µg/L. This means the range extends from zero detected up to that reporting level but does not imply any health-based violation or contamination above regulatory limits, as no federal MCL exists. Absence of detection above the reporting level does not mean the constituent is absolutely absent, only that concentrations are below this sensitive measurement threshold. It is also not an indication of individual household water conditions, which can only be verified through direct testing of your home’s water supply.

For households in Fayette County where current water treatment equipment has failed, addressing possible 1,2,3-TCP concerns requires a solution capable of effectively managing this chlorinated solvent. The Fleck 1,2,3-TCP Filter ships ready to configure and is documented to treat levels consistent with household water demand. It offers a reliable response to ensure ongoing water quality management aligned with federal monitoring data and household needs.

Where this information comes from

Source: EPA SDWIS public water system record. Sampled 2013-10-08. These figures describe the public water system's record, not the plumbing inside any individual building.

On record: EPA UCMR3 monitoring (2013-2015) for KY American Water Co. (KY0340250), KY: 16 results across 1 listed contaminants, 0 detections above the reporting level; nothing detected above the method reporting level