GRWA 2022 – Thank you for another great conference Georgia!

Supporting image for GRWA 2022 - Thank you for another great conference Georgia!

US Submergent Technologies and the SediVision® team would like to thank everyone at the Georgia Rural Water Association for hosting another great conference. We were honored to participate.

If you stopped by our booths during the event, please say “hi” below in the comments!

Being at GRWA 2022 –

“The GRWA Conference was a great meeting that brought together water and wastewater professionals from throughout the state of Georgia. Jekyll Island is a beautiful and unique venue and a perfect place to come together as colleagues and as friends, whether it’s in conference sessions, at the exhibits, or at the Low Country boil.”

Matt Nestor, USST Project Manager
Matt Nestor, Project Manager at USST

To connect with Matt and learn more about how US Submergent Technologies (USST) can help you optimize your wastewater facility’s output using USST’s patented grit and debris removal processes, email him at

“The GRWA always puts on a great conference. “It’s organized, well planned, friendly faces. Conversations this year revolved around everyone being glad to get out of the ‘office’ and happy to see each other. A lot of people were interested in both USST and SediVision®. People came up without prompting. They wanted to understand what we do and to learn more about SediVision. The technology behind SediVision has clearly captured everyone’s attention.”

Michelle Roberts, Program Administrator

Another big feature this year was the opportunity to introduce SediVision® both in the exhibit hall and as part of a presentation in the wastewater education session conducted by Denver Stutler, CEO & SediVision co-inventor.

Facility operators, engineers, and others in our industry are saying that SediVision is:

Like an MRI for Wastewater Tanks

What does this mean for your wastewater system? Well, if you caught Denver’s presentation, you know that SediVision delivers a complete picture of what’s happening in your full wastewater tanks, positioning you to know with confidence and predictability when your tanks require cleaning and maintenance.

We’re very excited about sharing this technology for predictive, preventative maintenance. Visit to learn more, or request a proposal for your facility.

For more information on all the ways USST & SediVision can help your facilities run smoothly, and keep your desk clear of change orders you can call us at 844-209-8586, or email Matt Nestor at USST, or Jim Spencer, National SediVision Project Manager

Thanks again, GRWA 2022 team for all your hard work and a great conference, from the team at US Submergent Technologies and SediVision!

Over 2,400 Tons of Sand and Grit Debris Removed from Wastewater Tanks

U.S. Submergent Technologies removes and cleans wastewater tank sand and grit debris. USST provides debris removal services to the entire states of Florida, Georgia, and Alabama.

Florida Sand and Grit Program Reimburses Cost of Cleaning Wastewater Tank Debris

The Florida Sand and Grit Grant Program is funding made available through the Florida Department of Environmental Protection (FDEP) for public utilities with an average annual daily flow of 3MGD or less to remove and clean sand and grit debris from their wastewater tanks.  Recently, a rural municipality in Northern Florida benefitted from the sand and grit grant program and utilized U.S. Submergent Technologies (USST) to clean a substantial amount of built-up sand and grit debris from their wastewater tanks while they remained online. 

USST’s crews removed, hauled, and disposed of approximately 2,411 tons or over 2,700 cubic yards of sand and grit material from the treatment facility’s aeration basins.  These wastewater tanks had built up over 10-foot-high mounds of sand and grit which was decreasing capacity, increasing the plant’s energy use, and worsening effluent quality. 

U.S. Submergent Technologies removes and cleans wastewater tank sand and grit debris.
U.S. Submergent Technologies removes and cleans wastewater tank sand and grit debris. USST provides debris removal services to the entire states of Florida, Georgia, and Alabama.

By restoring capacity USST estimates the City saved more than $7 million in capital expenses to rebuild the treatment capacity.  In other words, the cost of restoring the existing treatment volume is much less than re-building the aeration tank’s treatment volume.  The 2021 Report Card for America’s Infrastructure indicates that most of our nation’s wastewater infrastructure has reached its ‘useful life’; assistance provided through the Florida Sand and Grit Grant Program goes a long way to help rural communities maintain their wastewater infrastructure and provide quality essential services to their residents, by capturing the full useful life. 

To learn how the Florida Sand and Grit Grant Program can potentially benefit your wastewater treatment facility call (941) 404-3405 or email, your facility may be eligible for a reimbursement of 50-100%.  There is no limit to the amount of funding your facility can receive through the grant program and no limit to the number of structures you can have cleaned under the grant program as long as all qualifications are met.

USST provides debris removal services to the entire states of Florida, Georgia, and Alabama. We are able to travel to other major cities, as well as suburbs and rural areas, and can service additional states as needed.  Our powerful and versatile Combination Truck can clean in wet or dry conditions with no need to drain down or alter treatment flow. 

If you’ve got grit, USST can Grit ‘Er Done!®   

Contact us to schedule a free quote at or call 844-765-7866.

SediVision’s General Manager Brings a Focus on Building

Expansion is Underway to Meet Interest in Complete Visibility

SediVision® LLC, a subsidiary of USST Holdings Company, has brought on a seasoned aquatic projects manager and business development specialist to serve as General Manager, leading all aspects of operations, production, and sales.  David Graves, a Florida native with a career in hydrographic survey, will be managing a growing team at SediVision® LLC.  

“SediVision® LLC is offering complete visibility and predictive maintenance solutions that the wastewater industry has never had, it’s like an MRI for wastewater tanks,” said Denver J. Stutler, Jr., CEO at SediVision® LLC.  “Our company has experience bringing revolutionary solutions to market and this patent-pending technology requires innovation and thought leadership from a General Manager that can meet our customers where they are.  David’s specialized background and unique skills are a vital addition to managing our talented and growing team.  We expect this momentum to continue as the features and benefits of SediVision® are made available to engineers and wastewater managers across the United States.”

A graduate of Texas A&M University at Galveston with a bachelor’s degree in Marine Biology, David Graves is no stranger to seeing in dark water.  He’s studied benthic habitats in the muddy waters of all the major bay systems along the Gulf Coast and has managed assessments of inland and marine water bodies.

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“I’m excited to have the opportunity to permeate such an exceptional and useful service as SediVision® into the wastewater industry,” said David Graves, General Manager at SediVision® LLC.  “I have utilized various applications of remote sensing equipment in my professional career to see what’s under dark water in oceans, rivers, lakes, and ponds.  SediVision® offers a unique opportunity to obtain complete visibility where there has never been any, in wastewater tanks, and I look forward to growing our services and meeting industry interest.”

David is passionate about the environment and community involvement.  He serves as Chair of the Volunteer Services Committee for the Tampa Bay Association of Environmental Professionals and participates in community service projects including coastal and river cleanups, shoreline restoration, and volunteering at the local food pantry. 

David and his wife, Carrie, enjoy the small-town life of Dunedin with their two dogs and cat. 

To learn more about SediVision® visit or email

350 Tons of Material Removed from Basins in Central Florida

A Challenging Environment Calls for Skillful Pros

In Central Florida, a 12 MGD reclamation facility was experiencing a loss of capacity in their north aeration and anoxic basins.  These tanks presented a challenge because they were lined with rows of diffusers that circulate oxygen feeding the microorganisms and bacteria residents that break down the waste.  This job required experienced professionals to access and remove the built-up material, so the customer called on U.S. Submergent Technologies (USST) for a solution. 

USST has cleaned tanks, pipes, and lift stations on over 400 projects around the United States.  Our qualified crews know how to evaluate situations on the ground to get the job done safely and efficiently.

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“I am proud of our guys for navigating the hard-to-reach environment along the bottom of these tanks and capably removing large amounts of material,” said Eric Pace, Foreman at USST.  “Our patented equipment and thorough safety measures allowed us to get into these structures and complete the job safely without any incidents.”

At USST, safety is our number one priority, and these structures were vast in size and 20-feet off the ground.  By executing a site-specific health and safety plan, our crews implemented confined space entry protocols, air quality monitoring, and other required safety measures to move in and out of these structures expeditiously.  USST’s versatile Combination Truck has a powerful vacuum that allowed the crew to reach and dispose of a total of 350 tons of sand and grit material. 

To learn more about how USST can restore capacity and flow at your facility call 844-956-1129 or email  If you’ve got grit, USST can Grit ‘Er Done!®.

Meet SediVision’s New Project Manager

Key Addition to Growing Team Brings 30-Years of Experience

In the fall of 2021, U.S. Submergent Technologies (USST) introduced the wastewater industry to a predictive maintenance solution called SediVisionTM, offering complete visibility in full wastewater tanks.  Recently, SediVisionTM, LLC has brought in a seasoned Project Manager with 30-years of industry experience, Jim Spencer.

“Born out of USST’s knowledge and experience, SediVisionTM, LLC to offers visibility to wastewater engineers, managers, utilities, and contractors,” said Denver J. Stutler, Jr., CEO at USST.  “We’re excited to welcome Jim Spencer to the team.  Jim’s innate capacity for our industry and his depth of knowledge will allow us to meet the level of interest SediVisionTM has generated.”

In 2004, Jim Spencer began in the industrial waste sales division for Waste Services (now Waste Connections) and has spent 30-years focusing on the areas of bio-solids, recycling, industrial, hazardous, special wastes, and hauling and disposal. 

“It is exciting to be a part of the SediVisionTM team, all of my professional experience has prepared me to excel in this role,” said Jim Spencer, Project Manager at SediVisionTM.  “I am enjoying traveling around the State of Florida and meeting with wastewater professionals and engineers, some who have been in the industry for over 20 years and getting a ‘wow’ factor when they see what SediVisionTM provides, it’s very promising when you consider the potential and what lies ahead for this company.”

Jim Spencer is SediVision's Project Manager

A Florida native, Jim attended the University of Florida and has a degree in Business Administration.  He resides in Southwest Florida with his wife, Nicolina, and their two children, Charlie, and Katie.

To learn more about an MRI for wastewater tanks visit or contact

63 Tons of Material Removed from Rural Treatment Plant

Florida Sand and Grit Grant Program Reimburses Restoration Costs

A rural community located in Southeast Florida’s Treasure Coast was experiencing capacity issues with their wastewater treatment plant’s multi-tank.  Specifically, inside their chlorine contact chamber, which disinfects and treats the wastewater.  A considerable amount of debris was clogging up this structure and decreasing efficiency at the plant.

This municipal wastewater treatment plant collects and treats more than 500,000 gallons of wastewater per day and met the qualifications for reimbursement through Florida’s Sand and Grit Grant Program, which makes it possible for publicly owned facilities averaging 3MGD or less to address the issues of sand and grit accumulation by reimbursing 50-100% of restoration costs. 

“U.S. Submergent Technologies (USST) worked with us to help make the process of restoring capacity at our plant as seamless as possible,” said Patrick Nolan, Utilities Manager at the Village of Indiantown.  “USST’s knowledgeable crew was professional and completed the job expeditiously while our plant remained online.  The funding available through the Florida Sand and Grit Grant program helps rural municipalities like ours continue to serve our community with excellence.” 

If you’ve Got Grit, USST can Grit ‘Er Done!®

USST came in and removed debris from the 70-foot in diameter, 18-foot-high structure with no need to drain down or shut down operations at the plant.  USST’s versatile Combination3® Truck has an extendable 49-foot boom allowing for access up and over high walls and down into the tank.  Utilizing USST’s one-of-a-kind GritGone Process®, the crew removed 63 tons of built-up sand and grit while the structure remained online.

To learn more about the Florida Sand and Grit Grant program call (941) 404-3405 or email

If you’ve Got Grit, USST can Grit ‘Er Done!®

Sanitary Sewer Overflows – Is There a Solution?

USST’s See, Clean, & VerifyTM Services Save Time and Money

Sanitary Sewer Overflows – Is There a Solution?  Yes, especially if the overflow is caused by an obstruction.   When working with a customer who is facing issues with sanitary sewer overflow (SSO) U.S. Submergent Technologies (USST) first tries to understand the problem.  At USST, our experience has been that every sewer pipeline system is unique and collects debris differently and gaining visibility into the pipeline is the first step. 

Recently, a county in Southwest Florida was at risk of SSO from their large diameter sanitary sewer pipeline, which encompassed over 15,000 feet.  USST was called in to perform our See, Clean, & VerifyTM services using our combined CCTV crawler and sonar imaging to inspect or see where accumulation was occurring and perform an inspection of surcharged lines. 

“We went in and conducted a full inspection and met with the county to review our pre-cleaning report, which targeted areas of their sanitary sewer line that were of greatest concern with a high accumulation of sand and grit,” said Aaron Hood, Operations Manager at USST. “Working with the county, we established a targeted plan for 2,000 of the 15,000 feet of large-diameter sanitary sewer line, to remove accumulated material that was increasing the risk of SSO during a rain event.”

See, Clean, & Verify Large Diameter Pipe

Using our powerful Combination Truck and unique GritGone Process® to remove material from the pipes meant the county did not have to shut down operations or bypass flow.  Our knowledgeable crews removed over 100 tons of sand and grit from the sanitary sewer lines, restoring capacity, flow, and efficiency to the county’s sewer operations. 

This customer was very pleased with our post-cleaning report which verified that all the targeted areas of their sanitary sewer pipe obstructed by material had been cleaned.  Following this project, a few rain events occurred in the area that would have typically caused SSO, however, because of USST’s See, Clean, & VerifyTM services, there was no flooding for the customer to deal with.

See, Clean, & VerifyTM says it all.  Obtaining visibility in pipes allows for developing the best plan of attack.  By seeing what’s there, targeted cleaning of specific pipe segments yields a cost-effective solution that is verifiable,” said Denver J. Stutler, Jr., CEO at USST.  “When it comes to assessing and developing a strategy for cleaning large diameter pipe there is no one better at implementing USST’s See, Clean, & VerifyTM services than our Operations Manager, Aaron Hood.”

USST delivers on our promise to the operators responsible for maintaining critical wet infrastructure. Nothing says verified better than an image. As the saying goes, a picture is worth a thousand words.

Learn more about the structures we clean here or email us for a free quote at

977 Tons of Sand Removed From EQ Tank

A Massive Job Calls for USST’s Expert Knowledge

A large primary clarifier serving as an equalization tank at a city’s wastewater treatment facility had accumulated 16-foot-high mounds of sand along the bottom, seriously reducing its capacity and potentially passing grit through the treatment process.  U.S. Submergent Technologies’ (USST) expertly trained crew set about to handle cleaning this massive 125-foot in diameter structure. 

Wastewater Tank Grit Removal
USST’s crew removed 977 tons of sand from this large primary clarifier in Central Florida. If you’ve got grit, USST can Grit ‘Er Done!®

“Our knowledgeable crews have a proven keen ability to navigate obstacles on the ground and this job presented some unique challenges,” said Paul Del Favero, Operations Manager at USST.  “This tank was huge, it’s covered, and the walls were about 25 feet high, so accessing the material inside was not going to be easy. By utilizing specialized equipment, we were able to set up our process inside the structure and clean out the sand efficiently and without damaging the structure.”

Crew members extended hydraulic lines and ran a 120-foot hose setting up a pump to run on our powerful Combination Truck.  Using our GritGone Process®, USST removed sand and grit while returning decanted water back to the plant for further treatment. The crew used reclaimed water from the facility to clean the structure. All these measures contributed to lowering our carbon footprint on this job site.

In total, 977 tons of sand were removed from this primary clarifier which holds on average 1.4 million gallons of water.  With capacity and flow restored, the facility is functioning more efficiently.


Our crews quickly and safely remove debris from all kinds of environments under various conditions. Structures and situations we specialize in include:

  • Tanks with high walls while in operation
  • Large-diameter pipes in submerged or surcharged conditions with no bypass
  • Deep wet wells while in service
  • Splitter boxes or box culverts while in operation

If you have a problem that needs solving, chances are we’ve handled it in the past and can offer a solution. We employ a variety of different methodologies to capture debris using our versatile, one-of-a-kind Combination Truck.

If you’ve got grit, USST can Grit ‘Er Done!®

Call one of our knowledgeable project advisors for a free site assessment at 844-956-1129 or email

Probing vs Complete Visibility Inside Wastewater Tanks

SediVisionTM Reveals Over Three Times The Amount Of Material Than Estimated

In central Florida, a wastewater treatment facility was experiencing loss of capacity and inefficiency with one of its aeration basins.  They probed this 140 by 40-foot digester from a few accessible spots along the walkway and hit concrete every time, indicating minimal material buildup.  However, the aeration basin was still using more energy than required and seemed to be suffering from a loss in capacity.  This facility could not logistically drain this tank down and wanted to know precisely what was occurring under all that dark water. 

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U.S. Submergent Technologies (USST) was called in to perform SediVisionTM on this critical structure to gain complete visibility under the dark water.  In just a few hours, sufficient data was collected from the tank and our team got to work compiling this information to provide complete visibility of the location and volume of material inside.  SediVisionTM revealed that a large amount of material had accumulated along the center portions of the tank, which are not accessible from the walkways.

“Traditional probing of this structure would have led to estimating the amount of material at about six inches across the bottom, or over 100 cubic yards of material.  This would have been a considerable underestimation of the actual amount of material inside this tank,” said Keith Sommers, Senior Cost Estimator at USST. 

SediVisionTM provides complete visibility under dark water in wastewater tanks, which until now, was unheard of in our industry.  This exciting solution allowed USST to estimate the amount of material based on reliable data, allowing the customer to better plan (or predict), and schedule maintenance.   

“In the end, there was nearly three times the amount of material inside this tank,” continued Mr. Sommers.  “Nearly 350 cubic yards of material had accumulated throughout the center of this large structure, decreasing efficiency of the aeration basin and depleting capacity at this facility.”

If you have a wastewater tank that for any reason cannot be drained down, let SediVisionTM provide you with complete visibility.  Eliminate the guesswork and plan your wastewater tank maintenance with confidence.

SediVisionTM leads to better knowledge, a better investment, and longer-lasting infrastructure.

Let us show you how it works: or 844-958-1207.

Laser Focus: Safety on the Road at USST

On any given day at U.S. Submergent Technologies (USST), crews mobilizing Class 8 (any vehicle over 33,000 lbs.) commercial vehicles equipped with specialized cleaning equipment, depart from our operations hub in Orlando Florida.  Their destinations are wastewater treatment facilities and critical wet infrastructure all over Florida and parts of the Southeast.  Their purpose is clear; to safely restore the capacity of wet infrastructure nobody notices but everybody relies upon.  When this professional group of experienced and knowledgeable CDL drivers gets on the road, one word, and one thing is at the top of everyone’s list, safety.  

“At USST, we employ professional CDL drivers because it is a serious business moving heavy equipment and operating commercial vehicles on the road,” said Paul Meding, General Manager at USST.  “We scrutinize our drivers based on the highest safety standards and hold them accountable through our company’s Driver and Fleet Safety Program.  We focus on ongoing training and providing resources for our drivers to do their best on the roads.  The unique type of equipment we’re using every day furthers the need for our emphasis on safety.  These efforts lead to better employee productivity and a significant reduction of the risks we must face.”

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At USST, we utilize duel-facing dashcam and GPS monitoring systems while our fleet vehicles are being driven and operated, our drivers benefit from constant monitoring, vehicle inspections, ride alongs, and professional coaching behind the wheel.  As professional drivers at USST, driving records, history, and patterns define skill level and professionalism on the road.  We are committed to providing ongoing training, resources, and support for our drivers.  These are some of the ways in which our company stands out from others in the industry and our well-deserved reputation for getting the job done safely is a direct result of those efforts. 

Recently, a State Trooper from the Florida Highway Patrol (FHP) Commercial Vehicle Enforcement division met with the USST Operations team to discuss safety on the road and foster an open dialogue on commercial vehicle safety.  The FHP Trooper discussed good driving habits, pre-trip inspections and preparations, state policies for commercial vehicles on the road, and ways to avoid distracted driving, which includes any activity (visual, manual, or cognitive) that takes your focus off the road even for a second.

“USST is constantly looking for ways to help our team grow in their professional roles,” concluded Mr. Meding.  “The essential work we perform can be dangerous and we know we can always do more, better, this keeps our company on the latest techniques when implementing our Health and Safety plans in the field.  I am proud of our crews for the work they perform safely every day and their willingness to embrace standards and practices that nurture our company’s culture of safety.”