Whole House 1,2,3-TCP Reduction Water Filter System - Trichloropropane Removal
1. How a Soil Fumigant Impurity from the 1950s-1980s Reached Deep Groundwater Decades Later
1,2,3-trichloropropane (TCP) is a chlorinated solvent historically used as a soil fumigant and in chemical manufacturing. Decades after its application, this compound can persist in the environment, migrating slowly through soil and rock layers to enter groundwater and surface water sources. In Albany County, Wyoming, the City of Laramie’s surface water supply reflects this legacy chemical’s environmental journey, demonstrating how historical practices can result in detectable levels of TCP well beyond its original use period.
2. Why the Reporting Level for This Solvent Is Thousands of Times Lower Than for Common Metals
The federal reporting level for 1,2,3-trichloropropane in drinking water is set at 0.03 micrograms per liter (µg/L), or parts per billion (ppb), which is significantly more stringent than typical thresholds for many metals. This low reporting threshold stems from TCP’s potential long-term health effects and its chemical persistence, rather than immediate toxicity. Monitoring at such sensitive levels helps track trace amounts that could accumulate over time, allowing water providers and consumers to remain informed about this constituent’s presence in the water supply.
3. What Happens When This Problem Is Left Untreated for Years, Stated Without Exaggeration
Without targeted treatment, 1,2,3-TCP can remain in household water indefinitely. Given its stability and low natural degradation rate, TCP levels in untreated water sources tend not to decrease quickly on their own. Prolonged exposure to chlorinated solvents, including TCP, has prompted regulatory agencies and consumers to consider how to manage even low-level detections effectively. However, since the City of Laramie’s public water system shows no EPA health-based violations related to 1,2,3-trichloropropane, this compound’s presence is currently monitored rather than classified as unsafe.
4. A Worked Example: Reading the Record's Median and Range as a Homeowner Would
The EPA’s unregulated contaminant monitoring rule (UCMR3) results for the City of Laramie from 2013 to 2015 include 10 sampling events for 1,2,3-TCP, with no detections above the reporting level of 0.03 µg/L. This means that while some TCP may have been present, its concentration fell below the threshold at which federal instruments can reliably confirm its presence. As a homeowner, this suggests that at the municipal level, TCP remains at very low or undetectable concentrations in tap water. However, since individual well or household plumbing conditions are not reflected in this data, specific testing is essential to determine local water quality precisely.
5. How Many Samples and Wells Stand Behind the Figures, and What a Small Sample Means
The dataset for 1,2,3-trichloropropane in Laramie’s system comprises 10 discrete samples taken between February and November 2013. These samples represent the community water system’s overall supply, serving over 32,000 residents through nearly 10,000 connections. While this number of samples provides a snapshot of TCP occurrence in the treated surface water source, it is a limited dataset relative to the total volume and variability of water consumed. A small sample size means individual variations could exist, emphasizing the importance of testing your own household water if you rely on a private well or have concerns about TCP levels.
Choosing Equipment to Match Your Household 1,2,3-TCP Demand
Since 1,2,3-trichloropropane is a challenging chlorinated solvent to address, selecting effective equipment for household water treatment depends on your specific TCP measurement. The C-Series 1,2,3-TCP Filter, which ships ready to configure, is designed to handle the demand levels you determine through testing. This class of equipment employs specialized media optimized for TCP’s chemical properties, offering an informed option for those seeking to manage detected TCP in residential water supply. Remember, the best choice starts with knowing what concentration your water contains, enabling you to align treatment capabilities with your household’s need.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2013-11-19. 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 Laramie (WY5600029), WY: 10 results across 1 listed contaminants, 0 detections above the reporting level; nothing detected above the method reporting level