We work hard, so you can be safe.
A testing laboratory for harmful algae
Cyanobacteria—often called blue-green algae—are likely behind the green, blue-green, or brown tint in your water. But the real danger isn’t the color—it’s the cyanotoxins they release, which can cause illness and even liver or neurological damage in humans and animals.
At GreenWater Laboratories, cyanobacteria are our sole focus. As the only private full-service lab dedicated to their study, we deliver cutting-edge testing and expert analysis to help clients make informed, confident decisions.
Find out whether you have harmful cyanobacteria or algae.
Our testing laboratory can determine whether you have potentially toxigenic (PTOX) cyanobacteria. Many times, this is the first step to testing.
How to Submit Samples
Follow these four steps to ensure accurate testing and fast turnaround times
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Step 1: Select Your Testing
Review our full range of services across all matrices—water, tissue, soil, and solids—to ensure you choose the correct analysis for your goals.
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Step 2: Prepare Your Kit
Access our guide to assembling your own sample collection kit or request a pre-assembled kit from our lab to ensure your samples arrive ready for analysis.
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Step 3: Collect & Prepare Shipment
Proper collection is vital for high-quality data. Find instructions for raw water here, or scroll down for specialized instructions for all other matrices.
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Step 4a: Online Submission
(Recommended )
Log your order through our portal before you ship. Enter your data online, print the generated COC, and include it in your package.
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Step 4b: Manual Submission
(Standard PDF Form)
Download and print our manual Chain of Custody. Complete the form by hand and include it with your shipment.
For which toxins do you need to test?
Visit our toxin analysis page for a description of our services as well as our recommended testing methods.
Additional Testing
Click on the links below for specific sampling and shipping instructions:
