Fleck Algal Toxins (Cyanotoxins) Filter

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Why Many Confuse Algal Toxins with Other Water Concerns

It’s common to mistake algal toxins for other water quality issues like taste, smell, or visible algae growth. Algal toxins are microscopic chemicals produced by certain algae, particularly cyanobacteria, that can occasionally be present in surface water sources. Unlike sediment or organic debris, these toxins are invisible and require specific testing to detect.

How Surface Water Source Influences Expectations in Washington County

Washington County's City of Tigard water system draws from surface water, which is the typical origin for algal toxin concerns. Shallow depths or stagnant conditions in surface sources can increase the chance of algae growth. However, government records show careful monitoring of these toxins. In 2018-2020 sampling for microcystins, cylindrospermopsin, and anatoxin-a, no measurements exceeded reporting levels in the City of Tigard’s system serving about 62,500 people.

Distinguishing Algal Toxins from Commonly Confused Problems

Algal toxins differ from issues like chlorine taste or general organic matter. They do not cause taste or odor in typical concentrations and are unrelated to mineral content or hardness. These toxins specifically arise from certain algal species and pose distinct health considerations when detected at higher levels.

Interpreting Certified Laboratory Tests for Algal Toxins

Tests conducted by certified laboratories provide concentration results in micrograms per liter (µg/L) for specific toxins like microcystins and anatoxin-a. A result below the laboratory’s reporting level means the toxin was not measurable at a level the equipment can reliably detect, not necessarily that it is absolutely absent. Because the EPA has not established enforceable maximum contaminant levels for these toxins, the data serve as indicators rather than regulatory standards.

Information to Note Before Seeking Treatment Advice

• Type of water source (surface water in this case)
• Results of any certified lab tests for microcystins, cylindrospermopsin, and anatoxin-a
• Whether your water comes from a public system or a private well
• Any observable changes in water quality, such as unusual color or odor

The Impact of Plumbing Materials and Age on Algal Toxin Presence

The presence or absence of algal toxins in tap water is primarily governed by the source and treatment, not plumbing materials or the age of pipes. However, plumbing components can influence overall taste and appearance and may interact with other water constituents but do not generate or increase algal toxins.

Long-term Consequences if Algal Toxins Are Not Addressed

If algal toxins were to be present and remain untreated, long-term exposure could pose health risks, although this is uncommon with well-managed public water systems like Washington County’s. Without intervention, toxins might accumulate if source conditions promote algal growth, but routine system monitoring helps prevent this situation.

Recommended Testing to Clarify Your Water’s Status

To understand the level of algal toxins in your home water, order a certified laboratory analysis for microcystins, cylindrospermopsin, and anatoxin-a. A result below the reporting level indicates low or no detectable algal toxin presence. If any are detected, the Fleck Algal Toxins (Cyanotoxins) Filter, which ships ready to configure, is a documented technology that targets these contaminants effectively.

Where this information comes from

Source: EPA SDWIS public water system record. Sampled 2019-08-29. These figures describe the public water system's record, not the plumbing inside any individual building.

On record: EPA UCMR4 monitoring (2018-2020) for City of Tigard (OR4100878), OR: 72 results across 3 listed contaminants, 0 detections above the reporting level; nothing detected above the method reporting level