How a Soil Fumigant Impurity from the 1950s-1980s Reached Deep Groundwater Decades Later

1,2,3-Trichloropropane, often abbreviated TCP, is a byproduct originally linked to soil fumigants widely used between the 1950s and 1980s. These chlorinated solvents were employed to treat agricultural lands and other soils to prevent pests. Over time, their chemical stability allowed traces of TCP to migrate slowly through soil layers, leaching into groundwater deep beneath the surface many years after direct application ceased.

In areas such as Lincoln County, Tennessee, this historical usage has contributed to low-level detections of TCP in surface water sources that serve public water systems. Understanding this timeline is key for residents assessing potential water quality concerns related to legacy contaminants.

What You Should Write Down Before Seeking Treatment Advice

Before considering any water treatment option for 1,2,3-trichloropropane, it’s important to have specific information about your household water. Write down:

• Your water source type (public system or private well).
• The name of your water supplier if you use municipal water. For Fayetteville, this is often the Lincoln County Board of Public Utilities #1.
• Details from any recent water quality reports or test results you have, especially TCP concentration if tested.
• The date of the test and the laboratory that performed it.

These details provide a clear foundation for understanding your water circumstances and communicating effectively about treatment needs.

Why 1,2,3-Trichloropropane Resists Air Stripping and What That Means for Treatment Choice

The chlorinated solvent nature of 1,2,3-TCP means it is chemically stable and does not easily volatilize into air. This characteristic makes air stripping—a common technique for removing some organic contaminants—ineffective for TCP. Its molecular structure enables it to persist through typical aeration processes used by water utilities or home devices.

For households concerned about this compound, technologies that rely on adsorption or catalytic breakdown are more appropriate. The Pentair 1,2,3-TCP Filter, for example, is specifically designed to address this limitation by using specialized media to target TCP molecules.

What 'Detected', 'Median', and 'Range' Mean in the Sampling Record on This Page

Government monitoring data for the Lincoln County Board of Public Utilities #1 from 2013 to 2015 showed no detections of 1,2,3-TCP above the reporting level of 0.03 micrograms per liter (or 0.03 parts per billion). Here, 'detected' means the laboratory measurement was above this threshold; 'not detected' means measurements were below it. 'Median' would represent the middle value of measurements if any had been detected; 'range' would show the lowest and highest detected concentrations. Because no results exceeded the reporting level during this monitoring period, these statistical measures are not applicable.

This sampling reflects federal occurrence monitoring, which differs from compliance or health-based testing. It is an indicator of presence or absence, not a safety judgment.

How Seasonal or Multi-Year Variation Shows in the Record (Dates and Ranges Given)

The EPA’s Unregulated Contaminant Monitoring Rule data for this water system came from samples collected between September 22, 2014, and July 7, 2015. This period covers multiple months including seasonal changes that can affect water quality composition. Although no detectable TCP was found, seasonal or year-to-year fluctuations can occur due to changes in source water, treatment adjustments, or environmental factors.

Longer-term monitoring helps identify trends, but single monitoring cycles cannot capture all variability. Therefore, local households should consider periodic water testing, especially if private wells or alternative sources are used, to understand their unique water quality over time.

How the Treated Water Differs at the Tap Once the Documented Technology Is in Place

The Pentair 1,2,3-TCP Filter ships ready to configure for household use, offering a targeted approach to reduce 1,2,3-trichloropropane concentrations from tap water. This filtration technology works by adsorbing and trapping TCP molecules, thus lowering their presence in the water reaching household fixtures.

While the regional public water system report shows no TCP detected above the reporting limit, individual water quality can differ. Using this filter can provide peace of mind by addressing any low-level chlorinated solvent that may be present but not captured in area-wide testing. The treated water typically exhibits improved clarity from chlorinated solvent compounds that are otherwise challenging to remove.

Next Steps: The Single Test to Order and What Result Would Settle the Question

To determine your household water’s 1,2,3-trichloropropane status definitively, arrange a laboratory water test specifically for TCP. Only a test of your home's water supply can confirm the actual concentration, which will inform proper response.

A result below the laboratory’s reporting limit (0.03 micrograms per liter) indicates TCP levels are very low or absent, aligning with the public system’s record for Lincoln County. A higher reading would justify the use of a targeted filter such as the Pentair 1,2,3-TCP Filter.

Accurate, current data is essential for any household decision about managing 1,2,3-trichloropropane concerns effectively.

Where this information comes from

Source: EPA SDWIS public water system record. Sampled 2015-07-07. These figures describe the public water system's record, not the plumbing inside any individual building.

On record: EPA UCMR3 monitoring (2013-2015) for Lincoln County Board of Public Utilities #1 (TN0000764), TN: 16 results across 1 listed contaminants, 0 detections above the reporting level; nothing detected above the method reporting level