If you notice an unusual chemical taste or are concerned about chlorinated solvents in your Salt Lake County water supply, understanding the source and risks of 1,2,3-trichloropropane (TCP) is essential when deciding on treatment options.
How did a soil fumigant impurity from the 1950s-1980s reach deep groundwater decades later?
1,2,3-trichloropropane was historically used as a soil fumigant impurity in agricultural chemicals during the mid-20th century. Because of its chemical stability and mobility in the environment, TCP can leach slowly downward through soil layers and eventually contaminate deeper groundwater sources over many years. This delayed migration explains detections of TCP in groundwater decades after its agricultural use declined or ceased.
What is the agricultural land-use history of this region and how does it map onto current detections?
Salt Lake County includes areas that formerly supported farming and chemical applications of soil fumigants containing TCP impurities. The groundwater supplying the Murray City Water System is sourced from wells tapping these aquifers. Although EPA monitoring from 2013 to 2015 for this system found no TCP detections above the reporting level of 0.03 micrograms per liter (µg/L), historical land use helps explain why routine surveillance for this chlorinated solvent continues.
How should I compare this area's record with a neighboring county's without overreading it?
While neighboring counties may have different detection results for 1,2,3-TCP or other contaminants, each water system and groundwater source is unique. The EPA’s unregulated contaminant monitoring data for Murray City Water System indicated zero detections among 35 tests, which does not necessarily represent or predict the exact condition of adjacent areas. Comparing data is useful but requires understanding differences in source type, aquifer characteristics, and monitoring frequency.
How do sample depth, well depth, or source type change what a resident should expect about 1,2,3-TCP levels?
Deeper wells often access older groundwater less influenced by surface contaminants, although slow-moving chemicals like 1,2,3-trichloropropane can reach deep aquifers. Wells drawing from groundwater sources are more likely to reflect historic contamination patterns than surface water sources, which typically show different contaminant profiles. Because municipal water systems draw from multiple wells at variable depths, the average system record is a broad indicator rather than a precise assessment of any single residence’s water.
What happens if 1,2,3-TCP goes untreated in household water for years?
Leaving chlorinated solvents such as 1,2,3-trichloropropane unfiltered may allow trace amounts to persist at the tap. While the EPA has not established a maximum contaminant level for TCP, concerns stem from its classification as a likely human carcinogen based on animal studies. Prolonged consumption of water containing measurable TCP could be unwelcome for health-conscious households. Because this chlorinated solvent resists common air stripping methods, selecting treatment equipment designed specifically for TCP filtration is advisable to ensure long-term water quality.
For residential demand in Salt Lake County, the C-Series 1,2,3-TCP Filter ships ready to configure for household water lines. It uses advanced technology targeting this chlorinated solvent effectively, providing peace of mind about your water quality.
What should I NOT conclude from area data about 1,2,3-TCP?
Area-wide monitoring that shows no detections of 1,2,3-trichloropropane above the reporting level does not guarantee that every individual home’s water is free of this constituent. Only a specific water test of your household supply can determine actual concentrations. Additionally, the presence of TCP in groundwater does not mean regulatory or safety thresholds are exceeded; detection is not the same as violation or contamination. The Murray City Water System record includes four EPA health-based violations unrelated to TCP, underscoring the need for comprehensive water testing and analysis beyond one constituent.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2015-03-27. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR3 monitoring (2013-2015) for Murray City Water System (UTAH18024), UT: 35 results across 1 listed contaminants, 0 detections above the reporting level; nothing detected above the method reporting level