What do 'detected', 'median', and 'range' mean in the sampling record on this page?
The terms 'detected', 'median', and 'range' are ways to describe measurements found during water testing. 'Detected' means an instrument measured some amount of a substance, but it is not a safety or legal violation. 'Median' is the middle value in a set of results, showing a typical level measured. 'Range' covers the lowest to highest measurement found in the sampling period. For Bartow County's public water system, no algal toxins were detected above the reporting levels in the 2018-2020 EPA monitoring.
How do algal toxins enter groundwater or the distribution system in this region?
Algal toxins, such as microcystins, cylindrospermopsin, and anatoxin-a, are produced by certain algae growing in surface waters. In Bartow County, the public water system source is surface water, where algae can develop under certain environmental conditions. These toxins can enter the water supply if algae blooms occur and are not fully removed during treatment. However, federal monitoring found no detectable levels of these toxins above reporting thresholds in the Bartow system during 2018-2020, indicating effective management at the source and treatment levels.
What should I write down before asking anyone for treatment advice?
Before seeking treatment options, note the following details about your water and household:
- Your water source type (surface or groundwater)
- Any recent or past test results for algal toxins or other contaminants in your water
- Your household water usage patterns including number of people and peak demand
- Any noticeable issues such as unusual taste, odor, or staining
- The public water system serving your home and its available water quality reports
Writing down these points helps clarify what issues may need addressing and the capacity required for any equipment.
What changes for a large household, a second home, or a seasonal property?
Larger households or homes with multiple residents may require treatment equipment that can handle higher daily water volume and flow rates. Second or seasonal homes may need systems that remain effective despite non-continuous use, and that can be maintained easily between visits. Knowing your home’s average and peak water demands will guide selecting the right equipment to manage potential algal toxins if they occur. A Fleck System like the Algal Toxins (Cyanotoxins) Filter ships ready to configure for different household sizes and usage patterns.
What does a certified laboratory test for this constituent report and how do I read it?
Laboratory testing for algal toxins reports concentrations in micrograms per liter (µg/L) for compounds such as microcystins, cylindrospermopsin, and anatoxin-a. These tests compare results to reporting levels established by the EPA to inform monitoring but do not represent enforceable limits. For example, the EPA SDWIS record for Bartow County shows no detections above 0.3 µg/L for microcystins, 0.09 µg/L for cylindrospermopsin, or 0.03 µg/L for anatoxin-a in the recent monitoring period. Understanding the test’s detection limits and comparing your sample to those can help determine if treatment is needed.
What should I NOT conclude from area data?
It is important not to assume the public water system’s sampling results predict your home's exact water quality. The absence of detectable algal toxins in the Bartow system does not guarantee your water is free from any such substances without testing your own source. Additionally, detecting low levels in government monitoring does not mean the water is unsafe or in violation of any law. While the Bartow County water system has no EPA health-based violations recorded, testing your household water for specific concerns is the only way to know its conditions. If algal toxins are detected, equipment such as the Fleck Algal Toxins (Cyanotoxins) Filter can be a direct-purchase option to address them.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2020-07-27. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR4 monitoring (2018-2020) for Bartow County (GA0150001), GA: 120 results across 3 listed contaminants, 0 detections above the reporting level; nothing detected above the method reporting level
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