Whole House 1,2,3-TCP Reduction Water Filter System - Trichloropropane Removal
If you notice that your current water treatment equipment struggles to manage 1,2,3-trichloropropane (commonly called 1,2,3-TCP or TCP) in Sioux Falls, you’re not alone. While the public water system serving Minnehaha County has reported no detections of TCP above the federal reporting level, some households find their equipment cannot keep pace with managing this chlorinated solvent.
If you know about California’s 5 nanogram per liter (ng/L) limit for 1,2,3-TCP
California has established a state maximum contaminant level (MCL) of 5 ng/L (which is equivalent to 0.005 µg/L) for TCP, a limit that is health-based and designed to protect sensitive populations. In contrast, the federal government has not set a maximum contaminant level for TCP. Monitoring conducted from 2013 to 2015 on Sioux Falls’ public water system detected no TCP at or above 0.03 µg/L (30 ng/L), which is notably above California’s threshold but well below any federal enforceable limit because none currently exist. This means no federal violation or exceedance is recorded, though some households may still seek enhanced treatment to address this contaminant.
If you want to understand why aesthetic secondary standards differ from health-based limits in the case of 1,2,3-TCP
Secondary standards address water qualities that affect taste, odor, or staining potential, rather than health. For 1,2,3-TCP, aesthetic thresholds do not apply because TCP is a chemical of health concern rather than an aesthetic issue in water. The distinction is important: a detection of TCP in water is not a sensory or aesthetic matter but a chemical contaminant concern that some households prefer to address beyond municipal treatment capabilities.
If you wonder what distinguishes 1,2,3-TCP from the two problems most often confused with it
TCP is sometimes confused with other chlorinated solvents or volatile organic compounds in drinking water, but it is chemically distinct and has unique treatment challenges. Unlike common aesthetic issues such as iron or manganese, 1,2,3-TCP is a chlorinated solvent historically used in soil fumigation and industrial processes. It resists removal by many conventional water filters, so equipment designed specifically for TCP is necessary when existing treatments fail to keep up.
If your household is large, a second home, or used seasonally, what changes
Larger households or those with intermittent or seasonal water use have different water demand patterns that affect TCP treatment effectiveness. Extended shutdowns or irregular water flow can reduce the performance of treatment equipment designed to handle chlorinated solvents. Household members should consider this when evaluating their treatment approach for TCP, as systems may need to be configured to maintain efficacy during periods of low use.
If commercial or industrial operators' questions matter to you
Though this page focuses on residential concerns, commercial and industrial sites consider additional factors like higher water throughput, regulatory compliance at different levels, and specific chemical exposure thresholds. Household users can learn from these concerns, particularly in assessing if their water treatment equipment can meet more rigorous demands as use patterns fluctuate.
If plumbing material and age play a role independent of source water
Plumbing pipes and fixtures can affect water quality separate from the water source. Older or corroded plumbing may interact with water chemistry, sometimes influencing contaminant levels or treatment outcomes. While Sioux Falls’ surface water source is regularly monitored, assessing household plumbing condition can clarify whether TCP presence or persistence relates in part to internal piping materials and their condition.
In sum, Sioux Falls’ public water system has no recorded detections of 1,2,3-TCP above the reporting level from EPA’s monitoring; however, individual household conditions vary. If your existing equipment cannot keep up with this chlorinated solvent, evaluating specific test results for your water and considering targeted solutions like the C-Series 1,2,3-TCP Filter, which ships ready to configure, can be a worthwhile step toward ensuring your water meets your household’s quality expectations.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2014-12-08. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR3 monitoring (2013-2015) for Sioux Falls (SD4600294), SD: 8 results across 1 listed contaminants, 0 detections above the reporting level; nothing detected above the method reporting level