Pentair 1,2,3-TCP Filter

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Understanding 1,2,3-TCP Measurement Sensitivity

Reporting Levels for 1,2,3-Trichloropropane

The reported measurement level for 1,2,3-TCP in Wasilla’s public water system was 0.03 micrograms per liter (µg/L), which is extremely low compared to typical detection thresholds for many common metals. This level reflects the sensitivity needed to identify trace amounts of this chlorinated solvent, which is far more elusive than heavier metals often found in water sources.

Interpretation of Detection Data

Between June and December 2013, monitoring found no samples registering above this reporting threshold in the Wasilla Water System. It’s important to note that these measurements are system-wide and do not represent individual household water conditions. Actual 1,2,3-TCP levels in your home would require specific testing of your water supply.

Regulatory Standards and Their Regional Relevance

Federal Guidelines and the Absence of a Maximum Contaminant Level

The Environmental Protection Agency (EPA) has not established a federal Maximum Contaminant Level (MCL) for 1,2,3-TCP. Consequently, the presence of TCP below detection limits in Wasilla’s groundwater does not equate to a violation or hazard under federal law. It indicates no regulated concern at the system level during the monitoring period.

Comparison to California’s State Limit

California enforces a stringent threshold of 5 nanograms per liter (ng/L), equivalent to 0.005 µg/L, which is much lower than the federal reporting level. This state standard reflects a precautionary approach to managing 1,2,3-trichloropropane in drinking water, highlighting regional variations in regulatory responses.

Impact of Plumbing and Infrastructure on 1,2,3-TCP Presence

Material and Age of Household Plumbing

The age and composition of residential plumbing can influence water quality independently from source water conditions. Older pipes or specific materials may interact with water or treatment elements but do not generate 1,2,3-TCP. Differentiating source-related contamination from plumbing effects requires dedicated water testing inside the home.

System Treatment Versus Plumbing Effects

While the Wasilla Water System draws from groundwater with zero recorded detections of 1,2,3-TCP above reporting levels, household water quality may still vary. Managing this variation often involves supplemental filtration equipment that ships ready to configure, designed to address residual organic contaminants including chlorinated solvents.

Agricultural Influences on 1,2,3-Trichloropropane in Groundwater

Land Use Patterns in Matanuska-Susitna Borough

The region’s history of agricultural land use includes applications of soil fumigants, some containing chlorinated solvents like TCP as impurities. These land use patterns are informative when considering potential groundwater impacts but do not confirm contamination at any household water source.

Sporadic Detections and Their Significance

Federal monitoring in Wasilla detected no 1,2,3-TCP above reporting levels, despite agricultural influences. This suggests that, in this system, chlorinated solvent migration into groundwater is minimal or effectively diluted at the system scale.

Legacy of Soil Fumigant Impurities on Groundwater Quality

Movement of TCP from Past Pesticide Use

1,2,3-trichloropropane was not a primary ingredient in older fumigants but appeared as an impurity in fumigant formulations used between the 1950s and 1980s. Over decades, this compound can leach into deep groundwater aquifers, explaining its occasional detection in some regions.

Relevance to Current Water Supplies

While the historic use of soil fumigants is a known factor, monitoring data for Wasilla’s groundwater system shows no 1,2,3-TCP at or above the detection level. Households concerned with residual chlorinated solvents may consider targeted filtration solutions designed for this purpose.

Summary Checklist for Household Action on 1,2,3-TCP

• System-wide monitoring in Wasilla shows no 1,2,3-TCP above the 0.03 µg/L reporting level.
• The EPA has no federal MCL for 1,2,3-trichloropropane; California’s 0.005 µg/L limit is more conservative.
• Plumbing materials and home system age can influence water quality separately from source water contamination.
• Agricultural history introduces the possibility of chlorinated solvent presence but does not confirm household risk here.
• Legacy pesticides containing TCP impurities may persist in groundwater but are not detected at significant levels in the local system.
• For households where existing filtration does not fully manage organics, a Pentair 1,2,3-TCP Filter ships ready to configure to target this solvent effectively.

This page clarified what regional monitoring reveals and does not reveal about 1,2,3-TCP in Wasilla’s water. Households deciding on additional filtration should factor in both system data and individual water testing results.

Where this information comes from

Source: EPA SDWIS public water system record. Sampled 2013-12-16. These figures describe the public water system's record, not the plumbing inside any individual building.

On record: EPA UCMR3 monitoring (2013-2015) for Wasilla Water System (AK2224646), AK: 6 results across 1 listed contaminants, 0 detections above the reporting level; nothing detected above the method reporting level