Understanding 1,2,3-TCP in Delaware County Water: Government Data and Household Water Concerns
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Whole House 1,2,3-TCP Reduction Water Filter System - Trichloropropane Removal
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Government Sampling Shows No Detectable 1,2,3-TCP in Delaware County’s Public Water
Official EPA monitoring of the Delaware County Water Company, Inc. from 2014 to 2015 found no measurable levels of 1,2,3-trichloropropane (TCP) in surface water sources supplying 150,000 residents. None of the 12 samples exceeded the reporting level of 0.03 micrograms per liter (µg/L), equivalent to 0.03 parts per billion (ppb). The system maintained zero health-based violations during that period.
1. How a Soil Fumigant Impurity from Mid-20th-Century Agriculture Enters Aquifers Decades Later
1,2,3-TCP is a chlorinated solvent historically associated with soil fumigants used mainly between the 1950s and 1980s. This chemical can leach downward through soil into deep groundwater over extended timeframes. Its persistence means that residues from past agricultural practices may still appear in some water supplies today.
2. Regional Agricultural Land Use and Its Correlation with 1,2,3-TCP Findings
Delaware County’s landscape includes agricultural activities, but the EPA’s sampling record for the primary public water system showed no detections of TCP. This suggests that either the legacy fumigant use was limited in areas feeding the surface-water supply or environmental pathways prevented TCP accumulation above detection limits in those waters. Agricultural land use data can help identify areas where monitoring might be more critical.
3. Judging Treatment Capacity According to Household Water Use
To address potential TCP presence at any level, choosing treatment equipment requires considering your household’s daily water consumption. The Pentair 1,2,3-TCP Filter ships ready to configure for residential scale and is designed to handle typical home demands. Matching treatment capacity with water usage ensures effective management without waste or over-sizing.
4. Seasonal and Multi-Year Variation in 1,2,3-TCP Monitoring Data
The EPA’s monitoring spanned from May 2014 through February 2015. No detectable TCP was found throughout these months, indicating consistent low levels or absence during that timeframe. Patterns over different seasons or years could vary, so ongoing monitoring is valuable for capturing changes tied to rainfall, agricultural cycles, or groundwater flow variations.
5. Understanding What Detection Limits, Median Values, and Sampling Ranges Mean
In the monitoring results, “no detected” means that concentrations were below the 0.03 µg/L reporting limit, not necessarily zero. Medians and ranges describe the distribution of measurements where data exist. For 1,2,3-TCP in this system, all sampled values were below detection, so no median or range above zero applies. This is a common scenario with contaminants regulated by monitoring rather than strict maximum levels.
Final Step: Testing Your Household Water
Government system data offer a general water quality context but cannot specify the condition of private plumbing or wells. To determine if your household’s water contains measurable 1,2,3-trichloropropane, order a certified laboratory test for 1,2,3-TCP concentration measured in micrograms per liter (parts per billion). If the outcome shows levels you want to address, the Pentair 1,2,3-TCP Filter provides a documented approach to reduce chlorinated solvent presence, improving your water’s quality according to your household’s needs.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2015-02-11. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR3 monitoring (2013-2015) for Delaware County Water Company, Inc. (OH2101412), OH: 12 results across 1 listed contaminants, 0 detections above the reporting level; nothing detected above the method reporting level