Pentair 1,2,3-TCP Filter

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If you notice no discoloration or unusual taste at your tap

The absence of visible or taste abnormalities in your household water is common and expected for 1,2,3-trichloropropane (TCP), a chlorinated solvent contaminant. Government monitoring data for the Oakdale public water system serving parts of Washington County, Minnesota, show no detections of 1,2,3-TCP above the reporting level of 0.03 micrograms per liter (µg/L) or 0.03 parts per billion (ppb). This means federal testing between 2013 and 2015 found TCP levels below measurable thresholds in the groundwater source supplying your water.

Understanding this detection level is critical because 0.03 µg/L is orders of magnitude lower than many thresholds for common metals or other contaminants typically tracked. The analytical methods used for TCP require higher sensitivity due to the solvent's potential persistence and origin. Therefore, even low or non-detectable levels in the system are carefully monitored to inform treatment decisions.

If you know the agricultural history near your residence includes crop production

Washington County has areas with past agricultural usage, which can correlate with TCP detections in groundwater. TCP has historically been used as a soil fumigant and can enter groundwater through leaching. Mapping studies reveal that areas around Oakdale, where groundwater is the water source, have variable proximity to previous agricultural land, explaining localized variability in detection data.

While no detections above reporting limits occurred in this system's latest monitoring period, understanding the land-use history near your home can be valuable for anticipating potential future presence. This informs whether further testing or preventative measures might be warranted.

If you are preparing to seek professional advice about water treatment

Before consulting experts or selecting treatment options, it is vital to assemble detailed information:

• Your water source type (private well or public supply)
• Recent laboratory test results specifically for 1,2,3-trichloropropane
• Any observations of changes in water clarity, taste, or odor
• Property history regarding nearby chemical or agricultural use

Having these facts allows targeted recommendations and avoids unnecessary treatments for constituents not present at problematic levels.

If you have obtained a certified laboratory test report for 1,2,3-TCP

A certified analysis for TCP reports concentration in micrograms per liter (µg/L), equivalent to parts per billion (ppb). Interpreting this report involves comparing your home's measurement to the reporting level of 0.03 µg/L used in federal monitoring and noting that no EPA maximum contaminant level (MCL) currently exists for TCP. Detection does not imply a violation or unsafe status, only that the solvent was measurable.

To determine if treatment is desired, consider any detection relative to thresholds established for aesthetic effects or state advisory levels, if applicable in your region. Because no health-based federal violation applies, treatment decisions focus on reducing any detected trace contaminants to your satisfaction.

If you want to distinguish 1,2,3-TCP issues from other common water problems

1,2,3-TCP differs from taste and odor problems, sediment, or iron staining in several ways:

• It is a colorless, odorless chlorinated solvent not contributing to visible discoloration or cloudiness.
• It is chemically distinct from metals or biological contaminants causing common household water symptoms.
• It requires sensitive chemical analysis for detection rather than simple visual observation.

Because of these distinctions, household water complaints about taste, smell, or staining usually do not indicate 1,2,3-TCP presence. Confirming its occurrence relies on targeted laboratory testing.

Understanding the scope of government data on 1,2,3-trichloropropane in Washington County

The EPA's Safe Drinking Water Information System records for the Oakdale public water system, which serves over 30,000 people in Washington County, found no detections of 1,2,3-TCP above the 0.03 µg/L reporting level during monitoring from 2013 to 2015. This data represents monitoring of the system source water, not individual household plumbing, and shows no health-based violations for TCP.

For specific knowledge of your home's water, a certified laboratory test is necessary. If you choose treatment, products such as the Pentair 1,2,3-TCP Filter ship ready to configure and are documented to address 1,2,3-trichloropropane in residential water supplies.

Where this information comes from

Source: EPA SDWIS public water system record. Sampled 2015-07-14. These figures describe the public water system's record, not the plumbing inside any individual building.

On record: EPA UCMR3 monitoring (2013-2015) for Oakdale (MN1820016), MN: 12 results across 1 listed contaminants, 0 detections above the reporting level; nothing detected above the method reporting level