Fleck Perchlorate Filter

Buy Now

View full details

If Government Sampling Shows No Detectable Perchlorate, Should You Take Action?

The EPA’s public water system record for the U.S. Navy Water System in GU reports no perchlorate detections above the 4.0 micrograms per liter reporting level in 42 tested samples taken between 2002 and 2003. Since no federal maximum contaminant level exists and no detections were recorded, this indicates the system’s water has not shown perchlorate presence above minimal levels during that period. However, absence of detection in system-wide monitoring does not guarantee individual household supplies are free of perchlorate.

If You Leave Potential Perchlorate Untreated for Years, What Could Happen?

Perchlorate is a chemical that can interfere with thyroid function when present in water sources at high enough levels over time. If perchlorate were present in your water at elevated concentrations without any treatment, it might gradually affect sensitive physiological processes in household members. The risk depends on concentration and duration of exposure. Addressing potential perchlorate concerns with treatment aims to reduce any exposure before it can accumulate internally.

If Your Water Source Is Deep or Surface-Based, How Should You Interpret Perchlorate Risk?

Different water sources may have varying perchlorate levels. Groundwater drawn from deep wells often has different contamination profiles than surface water or shallow wells. Source type influences the likelihood and concentration of perchlorate presence. The reported monitoring for the U.S. Navy Water System in GU does not specify the source type, so household owners should consider additional testing of their own water to understand their specific situation.

If Your Home’s Fixtures and Appliances Use Water, Which Are More Sensitive to Perchlorate?

Perchlorate primarily affects ingestion rather than mechanical or aesthetic functions. Therefore, fixtures and appliances that deliver drinking or cooking water, such as kitchen faucets, ice makers, and water dispensers, are of highest concern. Devices that treat water before consumption can reduce perchlorate exposure. Other uses like irrigation or bathing are less sensitive to this contaminant.

If Public System Data Shows No Detection, How Does Private Well Testing Differ?

The EPA record reflects monitoring results for the public water system overall, not individual private wells or household plumbing. Private wells are not included in this data and must be tested separately to determine perchlorate presence. A certified laboratory test of your own water is necessary to confirm if perchlorate is present at any level. This distinction helps homeowners decide on the necessity and choice of treatment technology.

If Sampling Records Use Terms Like 'Detected', 'Median', and 'Range', What Do They Mean Here?

The term 'detected' refers to concentrations measured above the instrument’s reporting level but does not indicate a violation or unsafe condition. In this case, no perchlorate was detected above 4.0 micrograms per liter in the recorded samples. 'Median' and 'range' typically summarize multiple results, but since there were no detections, these statistics do not apply to perchlorate here. Understanding these terms clarifies the significance of monitoring data without implying health risks.

In summary, EPA monitoring for the U.S. Navy Water System in GU found no perchlorate detectable above reporting limits, indicating low or no perchlorate presence in the public supply. For individual household decisions, testing your own water is essential to identify if perchlorate treatment is warranted. The Fleck Perchlorate Filter offers a documented option for households choosing to reduce perchlorate levels and provides a direct-purchase solution that ships ready to configure.

Where this information comes from

Source: EPA SDWIS public water system record. Sampled 2003-12-07. These figures describe the public water system's record, not the plumbing inside any individual building.

On record: EPA UCMR1 monitoring (2001-2005) for U.S. NAVY WATER SYSTEM (GU0000010), GU: 42 results across 1 listed contaminants, 0 detections above the reporting level; nothing detected above the method reporting level