Fleck 1,2,3-TCP Filter

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If your lab test report shows 1,2,3-TCP listed as non-detect or below 0.03 micrograms per liter (µg/L)

Your household water test result for 1,2,3-trichloropropane, also called TCP or 1,2,3-trichloropropane, indicates a concentration below the reporting level commonly used by federal monitoring. The City of Gulfport public water system, which serves over 75,000 people in Harrison County, showed no detections of 1,2,3-TCP above 0.03 µg/L (equivalent to 0.03 parts per billion) in monitoring conducted from 2013 to 2015. This means the chlorinated solvent was not measured at a level requiring reporting in the system’s groundwater source. While this federal data does not describe your home’s individual water condition, it sets a general context for the area.

If you want to understand how local land use connects to this chemical's presence

1,2,3-trichloropropane historically entered groundwater largely due to its use as an impurity in soil fumigants applied mainly between the 1950s and 1980s. Areas with past agricultural land uses involving such fumigants have a documented higher likelihood of groundwater detections. While Gulfport's groundwater source is monitored and shows no reported detections above the threshold in recent surveys, the region’s history of land use is important to note when assessing potential TCP presence. Household testing is the only way to confirm your specific water’s condition.

If you are curious why a chemical used decades ago appears in today’s groundwater

1,2,3-TCP is a persistent chlorinated solvent that resists natural breakdown in groundwater. Because it leached into the soil decades ago, it often takes many years—sometimes several decades—to reach deep aquifers supplying wells and public water systems. This slow migration explains why monitoring continues well after soil fumigant use ceased. The Gulfport public water system draws from groundwater sources that have had time to reflect these historical impacts, which helps inform monitoring efforts and treatment planning.

If you notice no specific taste, smell, or household symptoms but are evaluating treatment options

1,2,3-trichloropropane does not cause obvious taste or odor changes in water at low levels and generally does not produce household symptoms detectable without testing. Corrosion or staining issues are not linked to TCP. Therefore, the absence of sensory or plumbing signs related to TCP does not confirm its absence, nor does it indicate safety when concentrations approach regulatory considerations. Testing your household water directly provides the necessary information to guide treatment decisions.

If you compare the absence of a federal maximum contaminant level with California’s stringent limit

The U.S. Environmental Protection Agency (EPA) has not established a federal maximum contaminant level (MCL) for 1,2,3-trichloropropane, so the City of Gulfport’s water system record shows no MCL exceedances. However, California maintains a state limit of 0.005 micrograms per liter (5 ng/L), which is considerably lower than the reporting level used federally. This illustrates how regulatory perspectives vary, and why some households may opt for treatment methods that address even trace amounts of TCP for added precaution.

If 1,2,3-trichloropropane is present in your household water and left untreated over many years

Long-term exposure to 1,2,3-TCP at elevated levels has prompted ongoing evaluation of its presence due to potential health concerns. Without treatment, this chlorinated solvent remains dissolved in the water and unaffected by simple air stripping or basic filtration methods. Over time, if TCP concentrations were higher than typical regional detections, untreated water could persist with this constituent, prompting some households to seek proven water-treatment options designed specifically for this compound.

One documented approach is to configure a Fleck 1,2,3-TCP Filter, which uses specialized technology to reduce the chlorinated solvent from water before consumption. This equipment ships ready to configure for household use, providing a targeted solution where test results indicate the need.

What you should not conclude from regional water data in Gulfport, Harrison County

Data about 1,2,3-trichloropropane concentrations in Gulfport's public groundwater system reflect area-wide monitoring results, not individual household water conditions. No detection in the public system record means no measurements were above the reporting level during the survey period, but it does not guarantee the absence of TCP in every home’s water supply. Conversely, the presence of TCP in a given household well requires direct testing to confirm and quantify. This regional data is a starting point for inquiry and precautionary assessment, not a definitive safety determination for any single residence.

Where this information comes from

Source: EPA SDWIS public water system record. Sampled 2014-02-03. 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 Gulfport (MS0240003), MS: 18 results across 1 listed contaminants, 0 detections above the reporting level; nothing detected above the method reporting level