Government Sampling Results in Memphis Shelby County
EPA records for Memphis Light, Gas & Water show no detections of 1,2,3-TCP above 0.03 micrograms per liter (µg/L, or parts per billion) in 20 samples taken between 2013 and 2015.
The water system serves 659,500 people with groundwater sources and has no health-based violations related to 1,2,3-trichloropropane on record.
Measured levels represent instrument readings, not safety assessments or legal limits, and no federal maximum contaminant level (MCL) exists for TCP.
Agricultural Land-Use History and Its Relation to 1,2,3-TCP Occurrence
Historical use of chlorinated solvents including 1,2,3-TCP in agriculture may influence regional groundwater quality, but the absence of detections in Memphis samples suggests limited impact within system sources.
Local farming practices that formerly employed fumigants containing TCP analogs are documented but do not translate directly to current system data.
Areas with intensive historic TCP use can have patchy subsurface distribution, making sampling location critical for detection.
Questions Unique to Commercial or Industrial Operators
Large-scale users evaluate TCP presence for operational safety and regulatory compliance beyond household concerns.
Businesses may require more frequent or specialized water testing to monitor chlorinated solvent levels within process water.
Commercial entities often investigate contaminant breakthrough times and system capacity to maintain uninterrupted water quality.
Understanding the Reporting Level for 1,2,3-Trichloropropane
The reporting level of 0.03 µg/L is set thousands of times lower than typical thresholds for common metals, reflecting TCP's potential toxicity at very low concentrations.
Such a low detection threshold ensures early identification but does not imply regular presence or hazard.
Monitoring focuses on chlorinated solvents like TCP due to their persistence and resistance to conventional treatment methods.
Fixtures, Appliances, and Processes Affected First by TCP
Water-using devices that contact untreated groundwater directly may show early signs of issues if TCP were present.
Household equipment involving filtration benefits from technologies designed to address chlorinated solvents.
Failure of existing water treatment equipment could reduce effectiveness against any contaminants, including TCP.
Sample Size and Well Distribution Behind the Data
Twenty samples from the public water system provide a snapshot but cannot define water quality at every household tap in Shelby County.
The sampling distribution across numerous wells reduces the likelihood that TCP contamination is widespread in the municipal supply.
Small sample sizes warrant targeted household testing to confirm individual water quality, especially when equipment fails.
Comparing Shelby County's Record with Neighboring Areas
Adjacent counties might show different TCP detection patterns due to varied land use, groundwater flow, and industrial history.
It is important not to generalize Shelby's data to other counties or vice versa without localized testing.
Shelby's zero detection in reported samples positions it favorably compared with some regions that monitor chlorinated solvents more frequently.
In summary, federal monitoring data reports no detections of 1,2,3-TCP in Memphis Shelby County’s public groundwater sources during 2013–2015. This indicates the municipal water system generally operates without measurable 1,2,3-trichloropropane presence. However, since your household’s equipment has failed, testing your own water is essential to understand your specific situation. The Pentair 1,2,3-TCP Filter ships ready to configure and is designed to address 1,2,3-trichloropropane and related chlorinated solvents should your water quality test warrant treatment.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2015-12-08. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR3 monitoring (2013-2015) for Memphis Light, Gas & Water (TN0000450), TN: 20 results across 1 listed contaminants, 0 detections above the reporting level; nothing detected above the method reporting level
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