Article Summary
- Learn how excess nutrients contribute to eutrophication, algae growth, and declining water quality.
- Compare nutrient remediation methods, including alum, lanthanum-modified clay, beneficial bacteria, and ecosystem restoration.
- Explore how waterbody conditions and management goals guide treatment selection.
- Discover ways to reduce nutrient runoff and support long-term water quality improvements.
Everyone wants to have a beautiful, pristine lake or pond, but these waterbodies can be difficult to manage. Each ecosystem comes with its own unique challenges that can be influenced by the surrounding environment or how the waterbody is utilized.
What Is Nutrient Remediation?
Nutrient remediation is the process of reducing excess nutrients, such as phosphorus and nitrogen, in lakes and ponds to improve water quality, prevent algae growth, and restore ecosystem balance.
Through targeted nutrient removal methods, lake management professionals can help restore balance and maintain healthy aquatic ecosystems.
Nutrients like phosphorus and nitrogen are necessary to support the food chain and plant growth in large lakes or ponds, but when in excess, nutrients can do more harm than good—nutrient pollution accelerates eutrophication.
What Is Eutrophication?
Eutrophication occurs when excess nutrients, especially phosphorus and nitrogen, accumulate in a waterbody and fuel excessive algae and aquatic plant growth. Over time, eutrophication can reduce oxygen levels, harm aquatic life, and negatively impact water quality.
Through the process of nutrient remediation, SOLitude helps restore balanced water quality conditions. We use a variety of advanced tools and techniques to monitor and manage nutrient levels.
How Does Nutrient Remediation Work?
Nutrient remediation works by targeting excess nutrients, particularly phosphorus, that contribute to poor water quality issues like algae blooms and excessive aquatic plant growth. Depending on the source of the nutrients, the size of the waterbody, sediment conditions, and long-term management goals, different nutrient remediation and eutrophication solutions may be recommended.
Some nutrient remediation methods bind phosphorus in the water column, while others target phosphorus stored in bottom sediments or capture nutrients before they enter the waterbody. When paired with proactive lake management strategies, nutrient remediation can provide long-lasting improvements to water quality.
Nutrient Remediation Methods & Eutrophication Solutions
Taking a proactive approach to lake management can help prevent nutrient pollution before levels get out of hand. However, if nutrient levels do become unhealthy, nutrient remediation solutions can be implemented to restore balance.
There are a variety of nutrient remediation methods commonly used in lake and pond management, but determining which solution is best for your waterbody will depend on the size of your lake or pond, budget, and goals.
Explore Nutrient Remediation Solutions
Concerned about nutrient pollution in your lake or pond? SOLitude’s experts can help identify nutrient sources and recommend solutions for your waterbody.
Which Nutrient Remediation Method Is Best for My Lake or Pond?
The best nutrient remediation method depends on the source of excess nutrients, waterbody size, phosphorus levels, sediment conditions, and long-term goals.
Large lakes with internal phosphorus loading may benefit from alum treatments, while smaller ponds may benefit from eutrophication solutions like lanthanum-modified clay, beneficial bacteria, or ecosystem restoration.
SOLitude’s lake management experts evaluate each waterbody individually to determine the nutrient remediation approach that best addresses the underlying cause of nutrient imbalance.
| Nutrient Remediation Solution | Best Used For | How It Works |
|---|---|---|
| Alum | Large lakes, recreational lakes, and drinking water reservoirs | Binds with excess phosphorus and creates phosphorus-binding sites in sediments to reduce internal phosphorus loading |
| Lanthanum-modified clay | Stormwater ponds and smaller waterbodies | Binds with phosphorus in the water column and bottom sediments to reduce nutrient availability |
| Beneficial bacteria | Stormwater ponds and smaller waterbodies | Improves the natural decomposition of dead plants, bottom muck, and other organic matter |
| Ecosystem restoration | Waterbodies with significant bottom muck | Helps break down bottom muck by increasing dissolved oxygen and promoting beneficial bacteria, resulting in a firmer, sandy bottom. |
How Does Alum Help Improve Water Quality?
Alum improves water quality by binding excess phosphorus and preventing it from being released from bottom sediments. This process helps reduce nutrient pollution throughout the lake and improves water quality and clarity.
The process involves injecting aluminum sulfate below the water’s surface using specialized application technology that dynamically adjusts flow rates according to boat speed and depth readings to help ensure uniform alum dosage throughout the waterbody.
How Are Alum Water Treatments Performed?
As alum is injected into the water, it then forms a floc that binds with the excess phosphorus and other particles in the water column. The floc sinks to the bottom of the waterbody and creates millions of phosphorus-binding sites, blocking the release of phosphorus from the sediment.
Alum is a well-studied, natural nutrient remediation solution that works best in lakes or highly turbid water. Commonly used in recreational lakes and drinking water reservoirs, this well-studied substance is endorsed by the North American Lake Management Society (NALMS) and has been utilized for water quality restoration for over 60 years.
SOLitude’s team of experts has completed over 200 alum projects, improving over 35,000 acres of water. You can relax knowing our experts are utilizing our state-of-the-art application vessels that are custom-designed to apply alum safely and effectively. Learn more about SOLitude’s alum treatment process.
Lake Yale Alum Treatment: Restoring Water Quality Through Nutrient Remediation
SOLitude’s lake management experts recently completed a large-scale alum treatment on Lake Yale, a roughly 4,000-acre lake in Lake County, Florida. Designed to address decades of phosphorus accumulation, the project used targeted nutrient remediation to reduce excess phosphorus, limit harmful algal blooms (HABs), improve water clarity, and support long-term ecosystem health.
Discover how SOLitude applied advanced alum technology to help restore one of Florida’s most impacted waterbodies. Click for a behind-the-scenes look at the Lake Yale project.
How Much Does A Lake Alum Treatment Cost?
According to SOLitude Senior Limnologist John Holz, PhD, the cost of alum projects can vary, but “millions of dollars in state and federal funding and grant programs are available for lake restoration projects to ensure safe, clean water is accessible to all.”
In order to successfully obtain these financial resources, it’s important to understand the complexities of the process. Click to hear directly from John Holz about securing lake restoration funding.
What Is Lanthanum-Modified Clay?
Another nutrient remediation solution recommended to limit phosphorus levels is the use of lanthanum-modified clay or bentonite. Lanthanum products bind with excess phosphorus in the water column and can also target phosphorus in the bottom sediments.
Experts typically recommend these eutrophication solutions to remove nutrients in stormwater ponds or smaller waterbodies where phosphorus levels can become more concentrated.
How Does Beneficial Bacteria Improve Pond Health?
Aerobic bacteria are responsible for the decomposition of dead plant matter, animal waste, and other organic materials.
If water quality testing reveals a deficiency in these beneficial bacteria, they can be supplemented through a process called biological augmentation. Think of it like a probiotic for your waterbody
How Does Ecosystem Restoration Work?
This restoration approach helps slow water quality decline by increasing oxygen levels within bottom sediments. With more oxygen available, nutrient-rich organic matter can decompose more effectively, gradually converting soft muck into a firmer, more stable lake bottom.
In addition to restoring lost depth, this process can significantly reduce nutrient levels in both the water column and sediments—by 50% to as much as 90%.
Preventing Nutrient Pollution
Each nutrient remediation method helps maintain a clean and healthy waterbody, but they’re not a catch-all solution. Pairing nutrient remediation with other natural lake management methods, such as native shoreline plantings or aeration systems, works hand in hand to combat nutrient pollution.
Reduce Nutrient Runoff at the Shoreline
Native vegetation around the shoreline can prevent nutrients from entering the water from stormwater runoff. These vegetative buffers also stabilize the shoreline, helping prevent erosion and shoreline collapse.
In addition, picking up trash and pet waste, reducing lawn fertilizer near water, and bagging leaves and grass clippings are also simple ways to limit nutrient pollution.
Protect Your Waterbody from Nutrient Pollution with SOLitude
SOLitude Lake Management’s annual management and eutrophication solutions can help ensure that your waterbody remains balanced and safe so you can enjoy boating, fishing, swimming, and much more with peace of mind. We’ll help you understand how to stop eutrophication, limit the impact of nutrient runoff, and get the most out of your waterbody for years to come. Contact us today to get started.
Frequently Asked Questions About Nutrient Runoff, Nutrient Remediation & Eutrophication Solutions
What Causes Excess Nutrients In Lakes And Ponds?
Excess nutrients can come from several sources, including stormwater runoff, lawn fertilizers, animal waste, decaying organic matter, and nutrient-rich sediments.
When phosphorus and nitrogen accumulate, they can contribute to algae blooms, poor water clarity, and other water quality issues.
Can Nutrient Remediation Prevent Algae Blooms?
Nutrient remediation can help reduce the nutrients that contribute to algae growth, particularly excess phosphorus. However, the most effective algae management strategy typically combines nutrient reduction with other lake management practices, such as aeration, circulation, and ongoing monitoring.
How To Stop Eutrophication?
The most effective way to stop eutrophication is to reduce nutrient inputs, control internal phosphorus loading, and implement proactive lake management strategies that restore ecosystem balance.
How Long Does Nutrient Remediation Last?
The effectiveness and longevity of nutrient remediation depend on several factors, including nutrient sources, waterbody conditions, sediment characteristics, and ongoing management practices. Regular monitoring and proactive nutrient runoff management can help maintain long-term water quality improvements.
SOLitude Lake Management is a nationwide environmental firm committed to providing sustainable solutions that improve water quality, enhance beauty and preserve natural resources.
SOLitude’s team of aquatic scientists specializes in the development and execution of customized lake, stormwater pond, wetland and fisheries management programs. Services include water quality testing and restoration, algae and aquatic weed control, installation and maintenance of fountains and aeration systems, shoreline erosion control, muck and sediment removal and invasive species management. SOLitude partners with homeowners associations, golf courses, private landowners, businesses and municipalities. SOLitude Lake Management is part of Rentokil, a leading business services company, operating across the United States, Canada and Puerto Rico.
For more information, visit SOLitude Lake Management at solitudelakemanagement.com, and connect on Facebook, LinkedIn and Twitter.
