Pentair 1,2,3-TCP Filter

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What does a 1,2,3-TCP test report for this area show?

Laboratory results from EPA sampling under the Unregulated Contaminant Monitoring Rule (UCMR3, 2013-2015) show no detection of 1,2,3-trichloropropane in Catoosa Utility District Authority’s public water system. Fourteen samples taken from March to December 2015 all registered below the reporting level of 0.03 micrograms per liter (0.03 ppb). This means 1,2,3-TCP was not measurable in the public water supply serving Ringgold in Catoosa County during that period.

How does agricultural land use in Catoosa County relate to 1,2,3-TCP detections?

Historically, 1,2,3-trichloropropane is linked to soil fumigants used in farming, which were more common in regions with intensive agriculture. Catoosa County features a mix of agricultural and residential areas, with surface water sourced for public supply. The absence of detected 1,2,3-TCP in public system samples corresponds with land use patterns that do not indicate heavy legacy soil fumigant contamination impacting the surface water supply here. This regional pattern suggests that agricultural influence on 1,2,3-TCP levels in Catoosa’s public water is minimal or below detection thresholds.

How did 1,2,3-trichloropropane from past soil fumigants reach groundwater decades later?

Between the 1950s and 1980s, soil fumigants containing 1,2,3-TCP impurities were applied to farmlands in many parts of the US. Over time, these compounds have leached through soil layers, reaching groundwater reservoirs long after use stopped. In Catoosa County, this process would mainly affect deep groundwater sources rather than surface water. Since the public water system uses surface water, legacy contamination from soil fumigants reaching deep groundwater does not directly impact this public water supply.

What does the EPA’s measured range of 1,2,3-TCP mean against federal standards?

Federal regulations do not currently set a maximum contaminant level (MCL) for 1,2,3-trichloropropane in drinking water, so the EPA’s monitoring program reports detections without citing violations or safety thresholds. The fact that all samples show non-detectable levels means 1,2,3-TCP has not been measured above the reporting level. This is not a health-based compliance test, but an occurrence survey. Households should interpret this as no identified presence of this chlorinated solvent at or above 0.03 micrograms per liter in the public supply during testing, not as a guarantee of permanent absence.

How should Catoosa County’s record be compared to neighboring counties?

Neighboring counties may have different land uses, water sources, and historical fumigant applications. Some may rely more on groundwater or have nearby agricultural fields with a heavier legacy of 1,2,3-TCP presence. Comparing occurrence data across counties can reveal regional trends but does not specify conditions at individual households. Differences in testing dates, water sources, and local environmental factors mean that absence of detection in Catoosa Utility District Authority’s surface water system does not predict the exact situation in another county’s system or private wells.

In households, which water fixtures or appliances are affected first by 1,2,3-TCP?

Because 1,2,3-trichloropropane is a volatile chlorinated solvent, it can off-gas during water use and may impact water used for drinking and cooking first. Appliances such as ice makers or water dispensers that filter or chill water may be sensitive to TCP presence. However, since the public water system record shows no detection, typical household fixtures are unlikely to be affected by this constituent from the public supply. Private wells require individual testing to determine if TCP is present.

What is the definitive test households should consider for 1,2,3-TCP?

Since regional public water system tests do not provide individual household water data, the only sure way to know if 1,2,3-trichloropropane is present at home is to order a certified laboratory test specifically for 1,2,3-TCP. If the test reveals TCP concentrations at or above 0.03 micrograms per liter, a residential treatment solution like the Pentair 1,2,3-TCP Filter can be considered. This system ships ready to configure and is documented to reduce chlorinated solvent levels including 1,2,3-trichloropropane in household water.

Where this information comes from

Source: EPA SDWIS public water system record. Sampled 2015-12-07. These figures describe the public water system's record, not the plumbing inside any individual building.

On record: EPA UCMR3 monitoring (2013-2015) for Catoosa Utility District Authority (GA0470000), GA: 14 results across 1 listed contaminants, 0 detections above the reporting level; nothing detected above the method reporting level