Fleck 1,2,3-TCP Filter

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Understanding Detected, Median, and Range in EPA Sampling Data

Detected means a measurement was made, not a violation

In the EPA's unregulated contaminant monitoring of Iredell Water Corporation, no 1,2,3-trichloropropane (1,2,3-TCP) was detected above the reporting level of 0.03 micrograms per liter. This means instruments did not measure 1,2,3-TCP at or above that threshold in the samples taken between 2013 and 2015.

Median values summarize central tendency but may be zero

The median indicates the middle level of all samples measured. For 1,2,3-TCP in this system, the median was below detection, which means typical levels are very low or not measurable with current methods.

Range shows variability across samples

The range would show the highest and lowest detected levels if any were measurable, but in this case, no readings exceeded the detection limit during monitoring.

Steps to Clarify Your Household’s 1,2,3-TCP Status

Check your local water system’s public records first

Reviewing reports such as those from Iredell Water Corporation can provide a general sense of source water quality for Statesville residents, including 1,2,3-TCP presence or absence at detectable levels.

Review the performance of your current water treatment equipment

If your existing equipment feels unable to keep up with perceived water quality changes or household demand, consider that changes in water volume or usage patterns affect treatment efficacy.

Obtain a laboratory water test specific to your home

To determine 1,2,3-TCP concentrations in your home’s water specifically, a certified lab analysis is necessary. This test can clarify if your particular supply includes measurable amounts of 1,2,3-TCP not reflected in system-wide monitoring.

Adjustments for Larger or Secondary Households

Larger households may require higher capacity filtration

As water usage increases with more residents, equipment demand rises. Your current system might be designed for smaller volumes, resulting in reduced treatment effectiveness under heavier loads.

Secondary or seasonal homes need tailored treatment schedules

Homes used intermittently can experience water quality variations due to stagnant water or changes in plumbing use patterns, which may affect 1,2,3-TCP levels and treatment needs differently than a full-time residence.

Influence of Plumbing Material and Age on Water Quality

Older plumbing can affect water chemistry

While 1,2,3-TCP is a contaminant primarily from source water, plumbing materials and system age may influence overall water quality and treatment outcomes, potentially requiring equipment capable of addressing secondary effects.

Materials like plastics or metals interact differently with contaminants

Some plumbing materials can absorb or release substances that interact with 1,2,3-TCP or other organics, impacting filtration performance and household water characteristics.

How Source Type and Sample Location Affect Expectations

Surface water as a source can vary seasonally

The Iredell Water Corporation’s surface water supply may show fluctuations in 1,2,3-TCP presence based on environmental conditions that affect contaminant runoff or breakdown.

Depth of sampling points can influence detection

Sampling at the treatment plant or distribution system differs from household tap samples; deeper wells or premise plumbing can alter contaminant levels, making personal testing essential for accuracy.

Deciding how to manage 1,2,3-TCP concerns involves understanding monitoring data, evaluating your current equipment’s capacity, and confirming your water through testing. The Fleck 1,2,3-TCP Filter ships ready to configure and can enhance treatment if you find elevated levels in your home supply.

Where this information comes from

Source: EPA SDWIS public water system record. Sampled 2015-10-29. These figures describe the public water system's record, not the plumbing inside any individual building.

On record: EPA UCMR3 monitoring (2013-2015) for Iredell Water Corporation (NC0149025), NC: 64 results across 1 listed contaminants, 0 detections above the reporting level; nothing detected above the method reporting level