Fix Ponds and Lakes Service

60 years of experience repairing ponds with bentonite pond sealant.

Bentonite is a great pond sealant, but the effectiveness of the seal depends on the quality of the mineral and the application.

Get a FREE Quote

Fix Ponds Lakes Page Top (Flow)


Our many years in the field have taught us that it’s not uncommon for farm ponds, ranch ponds, stock tanks and similar water holes to seep water to the ground. Ponds usually leak through to the underground if the soil is too porous, through cracks and holes in the bottom of the pond and/or through the sides of the pond when there’s an external source of disturbance. In most of these cases, the bottom of the pond wasn’t lined when the pond was built or the lining was applied incorrectly.


To fix ponds, tanks or lakes from seeping water into the ground, bentonite may be added to repair a pond. Bentonite is applied as a pond liner. Bentonite keeps your pond as close as possible to a natural environment. Being a 100% natural clay, you add to the ground a component that will blend perfectly into the pond’s ecology and give you an excellent result for a very low cost and a very long time.


There are no risks for any fish, plants or stock, or even for people. As an advantage, bentonite is a low cost material, mined and crushed to a certain grain size to serve as a pond liner. Finally, bentonite is a very low maintenance pond liner. The impermeable seal at the bottom of your pond can last for several years if applied correctly, making your initial investment worth the while.


Let’s go through the process of fixing a leaking pond with bentonite in a general way. We begin by removing any debris located at the bottom of the pond, creating a smooth as possible surface to receive the layer of bentonite pond liner. Once the bentonite is applied as uniformly and evenly as possible, it is blended into the soil, creating a homogenous surface across the entire area. This processing method is known as the BLANKET METHOD. In some cases, it may require an additional layer of soil on top of the bentonite layer to ensure optimal results. When adding this process, it is referred to as the MIXED BLANKET METHOD.


Lonestar Minerals offers an important service for  fix ponds and lakes.
We share our experience and direct you through the process of repairing the pond by diagnosing the cause of the leak, suggesting a solution, and implementing said solution.


To start the process, we need to understand why your pond isn’t holding water. If required, one member of our team may visit your property and help you diagnose the issue. We will give you a formal quote outlining what needs to be done and its cost once the issue is found.


We bring the bentonite to your property when we get the green light, and our crew arrives to ensure the bentonite is applied correctly, and the pond is filled up with water. A few days later, our workers will follow up and make sure that all is in order.


With Lonestar Minerals, you can expect competitive pricing, extensive expertise, excellent quality product, and turnkey service.

Our Bentonite Pond Sealant Mix Mesh is unique and has been developed using our 50+ years experience in the field.

We are passionate about our business. We have been involved in mining ore bentonite to milling and delivering a selected type and quality bentonite for your industry and application. This Passion translates into our business model

We are motivated by a desire for Excellence to be achieved. Each production batch of bentonite that we process at our plant is tested at our laboratory to ensure its quality. Our production process is ISO-9001 certified.

We conduct ourselves with Integrity, providing truthful consultation services and operating under laws, legislation and policies.

We concentrate on the People, rather than the things. Our main goal is to aid our customer’s success and to know our staff is proud to be working with us.

Fix Ponds and Lakes Services Near You

We deliver nationwide, and we can build you a pond or apply the bentonite to your soil in the country’s central and southeastern states!

[Minimum job for applying the bentonite is when purchasing a minimum of one full truckload]

We deliver nationwide, including but not limited to the states of Texas, Nevada, Wyoming, Idaho, Louisiana, Arkansas, Oklahoma, New Mexico, Montana, Nebraska, Colorado, Utah, North and South Dakota.

What our clients say about our Fix Ponds and Lakes Service?

“My business is simple. I design ponds. Lonestar has been my main supplier of bentonite for the past 7 years. They are honest, hard-working, and have never let me nor any of my clients down.


With pleasure, I sure do recommend them!”

Alex Hankins


“Lonestar Bentonite declares to have a high-performance product. The product seems to work as advertised. We’re very pleased with the results so far. Every day, it seems to be better. I highly recommend this product, as I tried other options on the market and didn’t work as well as this one.”

Pat Talamas



Do I have to empty the pond to repair it with bentonite?

We recommend applying the bentonite to a dry pond. It can be applied to a pond with water, but that introduces several more variables into the equation, and is not as effective as applying it to a dry pond and has the risk of not obtaining the desired results.


Is bentonite better than passive pond liners?

Every pond liner has it’s advantages and disadvantages and, of course, there are several schools out there. We believe that passive pond liners are a good option for garden ponds (maybe two or three thousand square feet), but when it comes to farm ponds, ranch ponds or artificial lakes, bentonite is less prone to puncturing or degradation. In our experience the initial investment is quite similar. Still, bentonite has the upper hand in the long term, with fewer maintenance costs and creating a natural pond ecosystem and not just a water retention tank.


Can I apply the bentonite by myself or do I need to hire your team to do it?

When purchasing the bentonite with us, we are pleased to guide you through the process of applying the bentonite yourself if you have the equipment and the willingness to do so. If it is not possible to do the application yourself for any reason, we are also able to take our team to your property to do the application process for you.


Where are Lonestar Minerals warehouses located?

We have three warehouse locations in Texas, in the cities of Bulverde, San Antonio, and Eagle Pass. They are open Monday through Friday from 9:00 AM to 4:00 PM. CST., and deliveries are only by appointment. We store 50 lbs. buckets, 50 lbs. paper bags, 100 lbs. paper bags, and 3,000 lbs. super sacks. We can also coordinate freight and deliver from Wyoming to the northern states to reach them within one day. We can coordinate logistics nationwide at a very competitive rate from LTL (Less-Than-Truckload) to FTL (Full-Truck-Load).


What makes Lonestar Minerals pond sealant different?

Our Bentonite Pond Sealant Mix Mesh is unique and has been developed using our 50+ years of experience in the field. We offer a select milled clay product for pond sealing that is a mix-mesh powder-granular product combining different mesh sizes, allowing the performance of this mix-mesh pond sealant to be superior to other similar products in the market.


How much bentonite is needed to seal my pond?

The most important factor to determine the amount of bentonite pond sealer required is the type of soil of your pond. Depending on it is how much bentonite pond sealant we recommend applying per square foot.
Here are some reference values that can help you estimate the required amount of bentonite to seal your pond (based on the Lonestar Minerals quality bentonite mix-mesh for ponds). Or, if you prefer, we have available a Bentonite calculator to easily approximate the amount of bentonite required for your pond.

Soil condition → Recommended range amount of bentonite pond sealer per square foot

Rock or gravel → 3.0 to 3.5 lbs/sqft
Clean Sand → 2.5 to 3.5 lbs/sqft
Silty Sand → 2.0 to 2.5 lbs/sqft
Sandy Silt 20% Clay Min → 1.5 to 2.0 lbs/sqft
Clay Soil → 1.0 to 1.5 lbs/sqft

Get a Quote to Fix Ponds and Lakes

Fix Ponds Lakes Page Bottom
for faster attention
Pond Information
Current pond information
Do you have equipment to unload a 3,000 lbs. super sack from flatbed truck?
× Need help?