Is 1,2,3-trichloropropane (TCP) in Butte’s water a concern for your household? Federal monitoring found no measurable 1,2,3-TCP above reporting thresholds in the Butte Silverbow Water Department system, but understanding the implications takes more than just a number. This page helps you interpret the public system’s data and what it means for your well-being.
If the reporting level for 1,2,3-TCP is so low, why does it matter?
The U.S. Environmental Protection Agency’s third Unregulated Contaminant Monitoring Rule (UCMR3) sets a reporting level for 1,2,3-trichloropropane at 0.03 micrograms per liter (µg/L), or 0.03 parts per billion (ppb). This level is thousands of times lower than typical thresholds for common metals like lead or copper because 1,2,3-TCP is a synthetic chlorinated solvent that may pose long-term health concerns even at extremely low concentrations. The low reporting threshold ensures highly sensitive detection, but detecting nothing above this level in Butte’s public water system means no quantifiable TCP was found during the federally mandated sampling period of 2013 to 2015.
If 1,2,3-TCP was an impurity in soils decades ago, how did it reach groundwater now?
1,2,3-trichloropropane historically occurred as a contaminant in soil fumigants used between the 1950s and 1980s. Over time, this chlorinated solvent leached slowly downward, reaching deep groundwater reservoirs decades later. The persistence and delayed movement explain why some regions still detect trace amounts, even though fumigant use ceased many years ago. Understanding this timeline helps explain why TCP detections may appear in groundwater today despite no recent application.
If using the C-Series 1,2,3-TCP Filter, what maintenance rhythm should you expect?
The C-Series 1,2,3-TCP Filter ships ready to configure for residential point-of-entry use. Its design targets the chlorinated solvent TCP specifically, employing specialized media optimized for capturing this contaminant. Routine maintenance involves timely replacement of the filter media to sustain effectiveness, generally recommended on a schedule informed by household water usage and local water quality trends. This predictable rhythm ensures consistent performance without guesswork or interruption.
If plumbing material and age influence water quality, how do they relate to 1,2,3-TCP?
While older pipes or fixtures can affect water by introducing metals or causing discoloration, they do not generate or alter the presence of chlorinated solvents like 1,2,3-trichloropropane. The Butte Silverbow Water Department obtains its supply from surface water sources, and any measured TCP would originate from source water or distribution system intrusion, not plumbing materials. Therefore, plumbing condition should be evaluated separately from concerns about 1,2,3-TCP.
If some fixtures or appliances detect 1,2,3-TCP first, which ones and why?
Chlorinated solvents tend to volatilize and evaporate, but in water systems, point-of-use fixtures such as kitchen taps, ice makers, or household filtration units provide the earliest indication of presence. Since the public water system showed no detectable 1,2,3-TCP at sampling, typical household appliances are unlikely to experience TCP-related effects. Nonetheless, using a dedicated filter like the C-Series 1,2,3-TCP Filter can add a layer of protection if monitoring or private testing suggests trace levels in your home.
If 1,2,3-TCP has entered local groundwater or distribution systems, how might that happen in Silver Bow?
The detection or absence of 1,2,3-trichloropropane in a public water system depends on contamination sources and water treatment processes. In Silver Bow County, environmental history of soil fumigant use decades ago combined with the slow migration of TCP through soil and water explains why federal data includes samples but no detections above reporting levels for the public system. Surface water source and regional water management practices also influence potential constituent levels in tap water.
What you should not conclude: Water quality results for the public system in Butte, Silver Bow County, do not show 1,2,3-TCP above detectable limits during federal monitoring, but this does not guarantee your household water matches those results. Private well testing or home-specific analysis is necessary to determine your own water’s composition. Also, detecting 1,2,3-TCP at levels below reporting limits or federal standards does not mean the water is unsafe or non-compliant. Concerned homeowners may consider configuring a C-Series 1,2,3-TCP Filter as a proactive measure to address tcp-related water quality concerns identified by testing.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2014-04-28. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR3 monitoring (2013-2015) for Butte Silverbow Water Department (MT0000170), MT: 12 results across 1 listed contaminants, 0 detections above the reporting level; nothing detected above the method reporting level