Understanding Nitrogen, Phosphorus & Algae-Related Lake Health Indicators
What Is Nutrient Testing?
Nutrient testing measures key chemical compounds that influence algae growth, water clarity, and overall lake health. These tests help lake managers understand nutrient loading, identify imbalances, and monitor long-term trends.
Excess nutrients—particularly nitrogen and phosphorus—are a leading cause of harmful algal blooms and water quality decline.
What Nutrient Tests Are Available?
Lake Pulse nutrient-related tests include:
Basic Lake Test
Nutrient Profile Surface Water Test
Total Phosphorus Test
Total & Reactive Phosphorus Sediment Test
Phosphorus Fractionation Sediment Test
Nitrogen Sequence Surface Water Test
Chlorophyll-a Test
Each test targets different nutrient pathways within the lake system.
When Should I Order Nutrient Testing?
Nutrient testing is appropriate when:
You are investigating algae blooms
Water clarity is declining
You want seasonal or annual baseline monitoring
You are tracking runoff impacts
You are applying for grants or regulatory documentation
You are evaluating sediment nutrient release
Phosphorus testing is often used to diagnose internal loading.
Nitrogen testing helps assess nutrient ratios and bloom potential.
Chlorophyll-a testing measures algae biomass directly.
Surface Water vs. Sediment Testing
Some nutrient tests analyze surface water samples.
Others analyze sediment samples to understand nutrient storage and release from the lake bottom.
Your test kit will include the appropriate collection containers and instructions.
How Nutrient Testing Works
Order your selected test from the Toolbox
Receive your sampling kit
Collect your sample following the instructions
Return using the prepaid shipping label
Results are uploaded to your Lake Pulse account
Shipping costs are calculated at checkout.
All nutrient laboratory tests are processed at EPA-certified laboratories.
Results & Reporting
Results are typically available within the stated business day window after laboratory receipt.
You can access:
Data Library (raw results)
Analytics Hub (trend analysis)
Downloadable PDF lab report in Data Sources
Nutrient data can be used to generate alerts and inform lake management strategy.
Was this article helpful?
That’s Great!
Thank you for your feedback
Sorry! We couldn't be helpful
Thank you for your feedback
Feedback sent
We appreciate your effort and will try to fix the article