1,2,3-TCP in Burleigh County Water: What Bismarck Residents Should Understand
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Whole House 1,2,3-TCP Reduction Water Filter System - Trichloropropane Removal
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Why the reporting level for this solvent is thousands of times lower than for common metals
Reporting level vs. health-based benchmarks
The government monitoring for 1,2,3-trichloropropane (TCP) in Bismarck's water system reports concentrations down to 0.03 micrograms per liter (µg/L), or parts per billion (ppb). This threshold is much lower than those used to measure metals like lead or arsenic, reflecting differences in detection technology and regulatory focus rather than an immediate safety issue.
Misinterpreting detection limits
A detection below this level or no detection does not mean the water is free of TCP or unsafe. Instead, this reporting level sets a consistent baseline for comparison in federal surveys. It is not a legal contamination limit.
Granular activated carbon contact time: why bed depth matters more for TCP than for taste
Contact time impact on chlorinated solvents
Because TCP molecules are small and resistant to some common water treatment processes, removing them effectively requires sufficient contact time in the filter media. This means deeper activated carbon beds generally perform better in reducing TCP than shallower ones.
Taste and odor differences
In contrast, taste and odor issues often respond to shorter contact times. Therefore, a filter designed solely for taste improvement may not adequately address chlorinated solvent concerns like TCP.
The household or facility symptoms that do and do not point to this problem
Symptoms not linked to 1,2,3-trichloropropane
There are no direct taste, odor, or staining symptoms associated with TCP at the low levels detected in Bismarck. If your water smells or tastes unusual, other causes should be investigated.
When to consider testing for TCP
Testing is necessary to determine your home's specific TCP concentration, as the regional data reflects system averages, not individual wells or connections. If you have concerns about chlorinated solvents, professional laboratory analysis is the only way to know your water's status.
How sample depth, well depth, or source type changes what a reader should expect
Surface water supply specifics
Bismarck's public water system uses surface water as its source, which differs from groundwater or well water in potential contaminant exposure. Surface water generally has different chemical profiles and treatment needs.
Effect on chlorinated solvent presence
Chlorinated solvents like TCP may be found in varying amounts depending on water source and local environmental history. Surface water supplies undergo extensive treatment and monitoring to meet federal standards, as shown in the system's record.
How seasonal or multi-year variation shows in the record (dates and ranges given)
Federal monitoring period
Samples taken from May 2013 to February 2014 under the EPA's Unregulated Contaminant Monitoring Rule (UCMR3) show no detections of TCP above 0.03 µg/L in Bismarck's system. This snapshot represents a multi-month period, not daily or yearly variations.
Potential for changes over time
While the data covers several months, water quality can change. Monitoring programs continue beyond this dataset to check for emerging concerns, but the existing record shows no TCP detections in the reported timeframe.
Why 1,2,3-trichloropropane resists air stripping and what that means for treatment choice
Characteristics affecting treatment
TCP has chemical properties that make it difficult to remove by air stripping methods, which are effective for more volatile contaminants. Instead, specialized activated carbon filtration targeting TCP is a documented solution for residential settings.
Choosing appropriate technology
The Fleck 1,2,3-TCP Filter ships ready to configure as a point-of-entry water treatment option that uses granular activated carbon technology to address chlorinated solvents like TCP effectively, complementing the treatment steps municipal surface water systems provide.
The City of Bismarck (ND0800080) serves 72,417 people through 21,427 connections with surface water. EPA monitoring from 2013-2015 shows no detected 1,2,3-trichloropropane above 0.03 µg/L in this system's water. For the most current and detailed water quality information, refer to the EPA Safe Drinking Water Information System public records.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2014-02-11. 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 Bismarck (ND0800080), ND: 4 results across 1 listed contaminants, 0 detections above the reporting level; nothing detected above the method reporting level