1. Map of Agricultural Land Use and Its Patterns of 1,2,3-TCP Occurrence
Maricopa County’s agricultural history plays a key role in the presence of 1,2,3-trichloropropane (TCP) in local water sources. The chlorinated solvent was often an impurity in soil fumigants used across the region between the 1950s and 1980s. These historical uses align with detections of TCP in surface and groundwater, though the City of Chandler’s water supply is sourced from surface water rather than local groundwater wells where agricultural impacts are typically more direct.
2. Legacy of Soil Fumigant Impurities Seeping into Deep Groundwater Over Decades
The fact that 1,2,3-trichloropropane can persist in the environment means that residues from past fumigant use have slowly migrated downward over decades. This slow movement explains why TCP detections can emerge long after the chemicals were last applied. Although Chandler’s public water system draws from surface water, the regional groundwater may still carry traces of this chlorinated solvent, reflecting that legacy contamination.
3. Evaluating Treatment Capacity Versus Daily Household Water Demand
For residential households considering treatment options for 1,2,3-TCP, assessing the volume of daily water use is essential. Treatment technologies must be capable of handling the household's peak and average water demand effectively to ensure consistent water quality. Choosing equipment with adequate capacity avoids underperformance and supports reliable management of any target contaminants.
4. Distinguishing Public Water System Records from Private Well Testing
The City of Chandler’s public water system records show that none of the 58 tests conducted between 2014 and 2015 detected 1,2,3-trichloropropane above the reporting level of 0.03 micrograms per liter (µg/L), or parts per billion (ppb). This federal monitoring survey is a broad occurrence sampling and not a compliance test. It establishes the regional water system’s general condition but does not specify individual household water quality. For certainty about their own water, residents should pursue private testing.
5. Why 1,2,3-Trichloropropane Resists Air Stripping and Consequences for Treatment Choice
1,2,3-TCP is a chlorinated solvent with properties that make air stripping an ineffective treatment method due to its low volatility. Instead, filtration technologies designed specifically to address this chemical are necessary. The Pentair 1,2,3-TCP Filter employs a targeted approach to manage the presence of this contaminant in household water, ensuring treatment tailored to its unique characteristics.
In summary, the City of Chandler’s public water system, serving over 247,000 people with surface water, showed no detections of 1,2,3-trichloropropane above federal reporting levels during the UCMR3 monitoring period. This record provides a broad view of the system’s water quality but individual household water conditions may vary. Detailed information and data for the City of Chandler’s public water system can be found through the EPA’s public records.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2014-11-06. 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 Chandler (AZ0407090), AZ: 58 results across 1 listed contaminants, 0 detections above the reporting level; nothing detected above the method reporting level
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