Cheyenne’s public water system, operated by Cheyenne Board Public Utilities, serves over 64,000 people throughout Laramie County using surface water sources. This water is treated and delivered to more than 25,000 connections, bringing water to homes like yours. Understanding how algal toxins might be involved in your household water concerns begins with knowing what regional testing has found and how that applies to your individual situation.
What information should I gather before seeking advice on treating algal toxins?
Before considering any treatment for algal toxins, write down details about your water source type (surface or well), household water usage, and any recent water quality test results from certified labs. Knowing if your home’s water comes from the municipal system or a private well helps clarify what exposure you might have to algae-related toxins.
How do water source characteristics affect expectations for algal toxin presence?
Algal toxins often originate in surface waters affected by algal blooms. Since Cheyenne’s system relies on surface water, it is periodically monitored for these toxins. Wells, especially deep ones, may have different exposure levels to algae-related substances. Thus, if your water is from a private well, its conditions may not match those of the public surface-sourced supply.
Does household size or seasonal use influence concerns about algal toxins?
Larger households or seasonal properties using water intermittently may notice variations in water quality. Seasonal changes can affect algal activity in surface sources, leading to fluctuations in toxin levels. Understanding your household’s water demand and timing can help anticipate when water treatment might be more critical.
What does regional testing reveal about seasonal or yearly variation in algal toxins?
The Environmental Protection Agency’s (EPA) Unregulated Contaminant Monitoring Rule (UCMR4) tested the Cheyenne Board Public Utilities water system between August and November 2018. Across multiple sampling points during that period, no algal toxins—specifically total microcystins, cylindrospermopsin, or anatoxin-a—were detected above their respective reporting levels. These results, while not continuous or exhaustive, suggest minimal to no measurable presence of these toxins during that timeframe.
How should a homeowner interpret the EPA sampling results for algal toxins?
For example, the 16 samples collected showed zero detections above reporting thresholds: 0.3 µg/L for total microcystins, 0.09 µg/L for cylindrospermopsin, and 0.03 µg/L for anatoxin-a. Although these compounds have no federal maximum contaminant levels (MCLs), the EPA provides 10-day health advisories as guidance. This means no health-based violations were recorded for this system, and detections are not indicative of safety concerns. Homeowners concerned about their own water quality should seek specific testing of their tap water to know exact concentrations if they suspect algal toxins.
What maintenance routine does the Fleck Algal Toxins Filter require?
The Fleck Algal Toxins Filter ships ready to configure for household use and employs filtration technology designed to reduce exposure to cyanotoxins. Its maintenance includes periodic filter media replacement to ensure continued effectiveness, typically based on water usage and local water quality conditions. Maintaining the filter according to these timelines helps keep the system functioning properly without burdening the household with complex upkeep.
What should I NOT conclude from Laramie County's public water data about algal toxins?
It is important not to assume your own water contains the same levels—or any levels—of algal toxins reported in public system data. The data represent broad system measurements, not individual homes’ water quality. Also, detections below advisory levels do not indicate safety risks or legal violations. Confirming your household’s water condition requires specific testing. If algal toxins are a concern, the Fleck Algal Toxins Filter is a documented solution designed to address this issue effectively for residential users.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2018-11-30. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR4 monitoring (2018-2020) for Cheyenne Board Public Utilities (WY5600011), WY: 48 results across 3 listed contaminants, 0 detections above the reporting level; nothing detected above the method reporting level

