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The Water Supply at Elmendorf Air Force Base and Its Source Characteristics

The Elmendorf Air Force Base water system serves about 30,003 residents through over 2,000 connections in Anchorage Municipality County, Alaska. This public water system relies primarily on surface water sources, which can be influenced by environmental factors and historical land use in the area. Water supplied undergoes standard treatment before reaching household taps, ensuring compliance with federal health-based standards.

Agricultural Land Use History and Its Connection to 1,2,3-Trichloropropane Detection

The Anchorage Municipality area, including Elmendorf AFB, has had limited agricultural activity compared to other regions. Historically, the use of soil fumigants in agricultural settings between the 1950s and 1980s introduced impurities such as 1,2,3-trichloropropane, a chlorinated solvent known for its persistence in the environment. However, given the area's mainly non-agricultural land use, the likelihood of significant TCP presence tied to soil fumigants is comparatively low.

1,2,3-Trichloropropane's Chemical Behavior and Treatment Challenges

1,2,3-TCP is highly resistant to treatment methods like air stripping due to its low volatility and chemical stability. This resistance means that conventional aeration methods, commonly used to reduce volatile organic compounds, are not effective in addressing TCP levels. Therefore, selecting a treatment approach that targets chemically stable contaminants, such as advanced filtration technology, is critical for households aiming to address 1,2,3-trichloropropane.

Interpreting Local 1,2,3-TCP Measurements Within Federal Guidelines

Between 2013 and 2015, federal monitoring recorded eight samples from the Elmendorf AFB public water system, with none detecting 1,2,3-TCP above the reporting level of 0.03 micrograms per liter (µg/L), equivalent to 0.03 parts per billion (ppb). As there is no established federal maximum contaminant level specifically for 1,2,3-trichloropropane, the absence of detections above the threshold does not indicate a violation or a safety concern. Rather, it reflects that, at the system level, this chlorinated solvent was not measurable above the set reporting criteria during the sampled period.

Stepwise Guidance on Assessing Household 1,2,3-TCP Levels

For a homeowner evaluating treatment options, the first step is to confirm the current water quality by obtaining a laboratory analysis focused on 1,2,3-trichloropropane concentration in the household supply. Before investing in treatment, consider the following order:

• Review recent municipal water quality reports for updates beyond the documented monitoring.
• Conduct a targeted water test to determine TCP concentration specific to your residence.
• Assess other water quality parameters that may affect treatment choice.

This approach helps avoid unnecessary investment when the contaminant is not present. If testing shows measurable TCP, treatment technologies designed for this chemical can then be considered.

Comparing Elmendorf AFB’s Water Record with Neighboring Regions

Nearby counties may present different 1,2,3-TCP monitoring results due to variations in land use, water sources, and historical contamination patterns. While Elmendorf AFB’s public water system data show no detections above the reporting level, adjacent areas with more agricultural history or different water supply sources might record measurable 1,2,3-TCP. However, these regional differences should not be misapplied to individual household water conditions without direct testing.

Understanding these distinctions is important to correctly interpret the monitoring results without overstating risk or treatment needs.

Summary and Reference to the Official Monitoring Record

The water system serving Elmendorf Air Force Base in Anchorage Municipality County has undergone federal monitoring for 1,2,3-trichloropropane, a persistent chlorinated solvent, with all results below the reporting limit during the 2013-2015 sampling period. This record reflects the system-wide water quality, not any individual household's water. For specific water characteristics, laboratory testing of your own tap water is necessary.

For those considering treatment options to address potential 1,2,3-TCP presence, technologies such as the Pentair 1,2,3-TCP Filter ship ready to configure and provide a targeted approach where testing indicates measurable contamination.

Complete data and monitoring details are accessible through the EPA's Safe Drinking Water Information System (SDWIS) public water system record for USAF Elmendorf AFB (AK2211423).

Where this information comes from

Source: EPA SDWIS public water system record. Sampled 2015-06-29. These figures describe the public water system's record, not the plumbing inside any individual building.

On record: EPA UCMR3 monitoring (2013-2015) for USAF Elmendorf AFB (AK2211423), AK: 8 results across 1 listed contaminants, 0 detections above the reporting level; nothing detected above the method reporting level