GrowFL Announces 50 Florida Companies to Watch

Leader in Submergent Cleaning Selected as Top Second Stage Honoree


(Sarasota, Florida, September 24, 2018)
– U.S. Submergent Technologies® (USST), a premier service provider specializing in submergent cleaning of hard-to-reach environments, is among GrowFL’s Companies to Watch for 2018, having been selected from a group of more than 500 nominees.  An innovator in the waste removal industry, USST is the only company in its category to be recognized.

“We are thrilled and humbled to have been selected as a Florida Company to Watch and it is a privilege to share this honor with 49 prestigious companies,” said USST’s CEO, Denver Stutler, Jr.  “Our unique, patented Combination truck is the only one of its kind, coupled with our entire USST team, we stand ready to solve problems for our customers by restoring the capacity of wet infrastructure.”

Denver Stutler, Jr., CEO USST

The statewide competition aims to recognize second-stage companies who show steady growth in both revenue and employee counts, innovation in leadership and technology, demonstrate community support, have a strong corporate culture, and other factors.  Total economic impact of the finalists collectively represented $339 million in 2017 revenue and 1,750 employees across 31 cities in 18 different industries.

“These stand-out companies are all led by entrepreneurs, and have demonstrated their capacity and intent to grow,” said Dr. Tom O’Neal, GrowFL Executive Director.  “They also all have critical intellectual property or a niche position that gives them a competitive edge in their markets,” he said.

The 50 Honorees will be honored at the 8th Annual GrowFL Florida Companies to Watch event held at the Straz Center in Tampa, Florida on February 24th, 2019.


 About U.S. Submergent Technologies

Founded in 2011, U.S. Submergent Technologies® (USST) is the premier service provider for restoring the capacity of wet infrastructure.   USST specializes in submergent cleaning from hard-to-clean environments such as tanks and pipes from the following industries: wastewater and stormwater, oil and gas, shipyards, power plants and more.

USST developed the Combination³® Truck to function as a standalone cleaning system powerful and versatile enough to remove accumulated sand, grit and rag material from a variety of submerged conditions.  The unique, GritGone Process® generates paint-filter dry sand, ready for disposal, while facilities remain in full operation, meaning no need for bypass pumping.

The proprietary capacity restoration services of USST helps utilities and companies extend the life of their infrastructure and increase efficiencies, saving time, energy, and money, while limiting the need for confined space entry.

With headquarters in Sarasota, Florida and operations based out of Central, Florida, USST is positioned to best service its customers across all areas of the state.  For more information, visit

 About GrowFL

Founded in 2009 as program focused on aiding second-stage growth companies succeed, GrowFL, in association with the Edward Lowe Foundation, celebrates growing companies who have demonstrated innovation in the marketplace by honoring them as a Florida Company to Watch.  The organization assists new Florida-based companies reach the next level by providing strategies, resources and tools typically only afforded by larger, Fortune 500 companies.  For more information, visit


Sand Gone, Capacity Restored

38-Tons Removed in Sebring, FL,
Facilities Remain Online

USST’s Combination3® truck removing sand & grit material

Two facilities in The City of Sebring, Florida were experiencing reduced capacity due to a buildup of sand and grit.  Paul Stephenson of U.S. Submergent Technologies (USST) mobilized the USST crew to Sebring and was able to efficiently clean all affected structures.

“Cleaning in submerged conditions is no problem for the USST crew,” said Paul.  “Our Combination truck outfitted with extended boom, downhole pump, and jetter allows us to be extremely efficient in removing material without having to drain down the tank or require confined space entry.”

“We can save a client valuable time and resources by not having to drain down tanks in order to remove material,” said Denver Stutler, Jr., CEO of USST.  “Our equipment is extremely efficient in submerged and surcharged conditions, and tank height is almost never an issue for us.”

USST Crew Members Corey Horsey & Dan Synan identifying areas with accumulated sand

A lack of an onsite water supply added complexity to the project, but the crew was able to successfully navigate the issue.  Approximately 24-tons of sand and grit material was removed from an aeration basin at the Country Club of Sebring Wastewater Treatment Plant (WWTP), as well as nearly 14-tons removed from two SBR basins at the Airport Wastewater Treatment Facility (WWTF).  The 38 total tons of material was deposited to onsite drying beds, and both facilities remained in full operation during the removal process.

“I found your crew to be very professional and thorough in their cleaning of our aeration basins. Great Job!” said Jack Pollard, Superintendent for the City of Sebring Wastewater Utilities Department.

In addition to valuable capacity being restored, due to the quiet nature of the Combination truck which operates under 70-decibels, no noise complaints were reported from surrounding neighborhoods.

Have a tank that needs attention?  Call one of our knowledgeable representatives for a free quote or to ask any questions you may have at (844) 765-7866 or email

The Value of Restoring Capacity

A Cost-Savings Opportunity for Wastewater Treatment & Collection Facilities

You’ve heard it before and most likely experienced it firsthand – the buildup of sand and grit in wastewater treatment infrastructure resulting in reduced treatment volume and increased energy usage.  The questions to ask are, do you have a sand and grit problem, and how do you know?   If you can’t see it, it must not exist!  The water at a wastewater treatment plant is often too murky to see through, and sand and grit might or not might not be present.  If it is present, there is value in restoring capacity.

USST Combination3® truck removing sand from tank

Determining whether or not there is an issue can be the real challenge.  Over time, sand seeps into pipes and lift stations and is eventually transported to wastewater treatment infrastructure.  Since the water in tanks at facilities are not see-through, accumulated sand at the bottom of tanks remains unseen and unnoticed until the associated problems have become acute and require immediate attention.

Often, the first solution to restoring capacity is to build a new tank instead of cleaning existing tanks.  Consider instead the value of restoring capacity versus replacing capacity by cleaning; when the sand is removed, capacity is restored in the structure.  Removing sand from wastewater collection and treatment infrastructure has three potential benefits which may be worth considering if they apply:

  1. Restoring capacity may eliminate or defer a capital expense. The value of a cubic yard of restored capacity in a wastewater treatment structure at a facility of ≤5 MGD can be as high as $3,000 per cubic yard.  In other words, we see a savings of approximately $3,000 of bricks and mortar for every cubic yard of sand removed.
  2. Sand removal provides an alternative strategy to lining or replacing leaking pipes and lift stations.
  3. Removing sand can reduce energy demand when aeration performance has been impacted. The benefit of reducing the amount of energy required to run blower systems by removing sand can be significant.

Ultimately, when the annual cost of maintenance is less than the cost of borrowing the capital to build a new structure or even repair the existing structure, then removing sand at the treatment facility may make more sense.

This brings us back to the original question: Do you have a sand problem?  Our knowledgeable team can help you answer that question and assist in building a preventative maintenance plan for your facility.  If you are a facility ≤3 MGD, you may even qualify for state grant assistance.  Call (844) 765-7866 to learn more.

Florida Environmental News

Red Tide: Is It Finally On Its Way Out?

If you’re currently living in the state of Florida, chances are you’ve been affected by red tide this summer.  The West Coast of Florida has been hit the hardest, with the first severe bloom of red tide spreading through the Gulf of Mexico this past June, pushing Gov. Rick Scott to declare a State of Emergency, making national headlines.  Dead fish and wildlife littered beaches, cloudy, toxic water lapped the shores, and residents suffered from upper respiratory and eye irritation.  Tourists have steered clear of the coasts and local businesses felt the loss this past Fourth of July and Labor Day.

Florida Fish and Wildlife Conservation Commission’s weekly report on current red tide status

As Floridians, we’ve experienced the effects of red tide in previous years, but what made this year’s bloom so much worse?  The first intense bloom of the year appeared off the coast of Sarasota in June, but scientists say it never really went away from October of last year, creating a convergence of old and new blooms.

“Scientists widely agree red tide, made up of Karenia brevis algae, gets seeded offshore at the bottom of the Florida shelf, then carried inshore by bottom currents.  As the algae gets close to coastal waters polluted by a host of sources, from farm and lawn fertilizer to leaky septic tanks, it [is believed] it can grow more intensely and create toxic blooms.”1

What is not clear is whether factors such as nutrient runoff, warmer waters tied to climate change, and man-made pollution is causing red tide, or simply feeding and prolonging the bloom, and more research is needed in order to fully answer this question.  Other contributing factors could include the impacts of hurricanes on deep water oscillations, Sahara dust, and heavy rainfall.

Recently, the bloom has begun to slowly move a few hundred yards off the coast, bringing a welcome relief.  The National Weather Service also dropped its hazardous beach conditions advisory for several Southwest Florida counties.2

There are a few valuable resources available if you’d like to monitor the progress of this year’s bloom.  The Florida Fish and Wildlife Conservation Commission releases a weekly report on the current status of red tide, and the National Oceanic and Atmospheric Administration issues Harmful Algae Bloom forecasts for Florida and Texas.  Mote Marine also dedicates resources to researching and monitoring red tide and developed the Beach Conditions Report, a useful source for the public to follow what’s happening on the shores of the 26 Gulf Coast beaches in Florida.



Under the River & Around the Corner

70-Cubic Yards of Material Creatively Removed from 660-Feet of Pipe, While in Operation

USST’s Combination3® truck at work under the Hillsborough River

U.S. Submergent Technologies (USST) recently completed work for the City of Tampa on a 300-foot section of interceptor sewer pipe running alongside the Hillsborough River which was experiencing reduced capacity due to a buildup of sand and grit.

Located in a neighborhood, USST setup downstream on the southeast bank of the Hillsborough River.  In order to access the 300-foot 48-inch diameter interceptor sewer pipe, the USST crew had to maneuver through a 360-foot 36-inch diameter siphon and parallel 20-inch diameter siphon under the river, with a 115-degree change in direction.

Close-up of Siphon

USST’s unique Combination truck with extended boom, dripless tube system, and jetter were utilized to travel the 360-foot length of siphon, navigate the 115-degree turn, and remove material from 300-feet of interceptor sewer pipe.  USST’s Field Supervisor, Aaron Hood lead the USST crew on the Tampa project, having been with the company since 2014, and has the most experience managing the capabilities of USST’s Combination truck and the GritGone Process®.

“While I was surprised at the amount of material that we encountered in the pipe, I wasn’t surprised that we had the capability to remove it,” said Aaron.

Almost 70-cubic yards of sand and grit was removed from the pipes, restoring more than 26% of its capacity, all while remaining in full operation.

Material removed from the Siphon

“The exceptional ability of our equipment to make a 115-degree turn in submerged conditions and remove a significant amount of material while remaining operational is what separates us from others in the market,” said Denver Stutler, Jr., co-founder and CEO of USST.  “I’m proud of our team and their effort to restore capacity, as well as our working relationship with the City of Tampa.”

Specializing in hard-to-reach environments in submerged conditions, USST can build a plan to safely and efficiently remove material from tanks, pipes, lift stations, and more.  Check out our video to learn more about the Combination technology and the GritGone Process® and give one of our representatives a call for a free site assessment at (844) 765-7866.

USST on the Tampa jobsite

Who’s Got the “Quench Factor?”

Best Tasting Water Contest Results,
FRWA Conference

18 utility companies serving customers in Florida came together at the FRWA Conference last week to compete in the Best Tasting Water Contest.  We spoke to Ben Lewis, State Water Trainer, and got the details about FRWA’s annual event.

Contestants are judged on four factors:  taste, odor, color and the quench factor.  The first three categories are easy to understand, but what exactly is “the quench factor?”  When asked Ben about this category, he explained that it is to observe how refreshed you feel after tasting the sample, the “ahhh” factor.

Up to 120 potential points per contestant are up for grabs from three judges.  Each judge can give up to 10 points per category, and the identity of the judges is anonymous.  The three judges are picked in the following way:

  • One judge must be from a regulatory body, such as the FDEP.
  • The second judge must be a vendor present at the conference.
  • The third judge is either the head chef from the hotel or can also be an individual from a water utility that is not participating in the contest.

When judging the water samples, judges assign each sample a number, and it takes the panel about 30-45 minutes to complete the tastings, make their decisions, assign points, and determine a winner.

This year, Talquin Electric Cooperative, Meadows Regional Water took first place in this year’s contest by earning 106 out of 120 points.  They will go on to compete in the 2019 National Rural Water Association’s Water Rally in Washington, D.C.

USST at FRWA Conference in Daytona Beach, FL

USST team at 2018 FRWA COnference in Daytona Beach, Florida.
USST team at 2018 FRWA Conference in Daytona Beach, Florida.

For the 5th year in a row, USST exhibited at last week’s 2018 Florida Rural Water Association Conference (FRWA) in Daytona Beach, Florida.   Our team was excited to meet and greet with customers, discuss their facility’s needs, and had fun spinning the prize wheel giveaway.

More than 600 attendees traveled to Daytona Beach this year, and we enjoyed speaking with everyone who stopped by the booth.  The Best Tasting Water Contest was held at the conference where 18 utilities competed for a spot in next year’s National Rural Water Association’s Water Rally in Washington, D.C.  We’ve got details about how the contest works and who won here.

If you missed us at FRWA, you can catch us at the next event.  Keep an eye on our Conferences page which we’ll update as new events are scheduled, or simply give us a call to make an appointment at any time at (844) 765-7688.

72-Tons Sand and Grit Removed While Plant Remained in Operation

Lake Wales WWTP's Oxidation Ditch
Lake Wales WWTP’s Oxidation Ditch.

The City of Lake Wales Wastewater Treatment Plant (WWTP) was due for maintenance on a large Oxidation Ditch and experiencing reduced plant capacity.  The facility’s treatment process is comprised of a Type 1 Oxidation Ditch operating as a conventional activated sludge treatment facility, and had built up a significant amount of sand and grit material, and needed to be cleaned while it remained in operation.

U.S. Submergent Technologies’ (USST) Paul Stephenson arrived with a team to the Lake Wales site prepared to remove material from submerged conditions.

“Using our unique Combination truck and GritGone Process®, we were able to efficiently remove about 72-tons of sand and grit while the plant remained in full operation,” said Paul.  “I knew our reliable equipment and exceptional crew would be able to get the job done quickly and on schedule.”

USST's Combination3® truck at work in Lake Wales.
USST’s Combination3® truck at work in Lake Wales.

The Combination truck’s extended boom, downhole pump, and jetter was utilized to safely remove sand and grit from the oxidation ditch.  No confined space entry was needed to complete the job, making it safer for the onsite crew and limiting costs for the client.

“When our solution reduces or eliminates the need for confined space entry and gets the job done, everybody wins,” says USST’s CEO, Denver J. Stutler, Jr.  “Less risk taken is always safer.”

Approximately 72-tons of material was successfully removed from the plant and deposited to onsite drying beds, increasing the effective treatment plant capacity to more than 9,000 gallons.

Lake Wales Oxidation Ditch
Lake Wales Oxidation Ditch.

Ted Long, Wastewater Superintendent and Chief Plant Operator for the City of Lake Wales for the past 9-years, has been in the wastewater treatment industry since 1979.  He said, “The process of grit and sand removal went very smooth with no interruptions of service. [USST’s] staff answered all questions and handled the task professionally.  I look forward to working with U.S. Submergent Technologies in the future […].”

Specializing in hard-to-reach environments in submerged conditions, USST can build a plan to safely and efficiently remove material from tanks, pipes, lift stations, and more.  Check out our video to learn more about the Combination technology and the GritGone Process® and give one of our representatives a call for a free site assessment at (844) 765-7866.

In the USST Spotlight: Michael Kisling

Michael Kisling, USST Crew member.
Michael Kisling, USST Crew member.

Say hello to Michael Kisling,

one of our hardworking Service Technicians here at USST.  Originally from Germany, Michael moved his family to America three and a half years ago with no home, no job, and couldn’t speak any English.  In just a short time, he has accomplished what some would call the American dream: his family has a home, become fully fluent in English, and has proven himself to be a valuable and reliable member of the USST crew.

Michael began his career two years ago with USST as a Tech II, moving up to the position of Tech 1 due to his leadership ability, attention to detail, and mechanical skills.  He even developed a training process for new team members needing to learn how to operate some of our equipment.

Read on to learn some other surprising details about our team member.

Hometown:  Landshut, Germany, located northeast of Munich in the Bavarian area.

What I Do as a Service Tech I:  Responsible for where the crew is going that day, organizing trucks and equipment for the project, maintaining contact with the client, monitoring progress and safety throughout the day, and basically making sure everything is straight.  I also train the new guys.

Favorite Aspect of the Job:  The possibility to learn a lot.  I have learned a lot about running a crew, the jobsites we visit, our equipment and I am still learning!

Proudest Accomplishment at USST:  My promotion to Tech I.  I am glad that USST is satisfied with my performance.

My Inspiration:  I do everything for my wife and two daughters.  Even when I have an extra busy day or have to work late, I know what I am doing it for and it is for my family.

My Friends Would Describe Me As:  An honest guy; a family man.

Words That I Live By:  Do the best that you can do.

Favorite Movie/TV Show to Watch:  I don’t really have time to watch anything!

First Job:  My first real job was a certified floor-layer.

Hobbies:  Cars and speakers!  I have a classic BMW that I like to work on if I have any spare time.  Although I haven’t done it in a while, I enjoy building speakers; I build them from wood and install all the electronic pieces myself.

#1 Place I’d Like to Visit:  Can I have more than one?!  I’d like to go to Australia, all of South America, China, Russia and even Antarctica.

Who I’d Want to be Stranded With on a Deserted Island:  My family.

Surprising Talent:  Cooking.  Before I moved to America, I had never cooked before.  I like to throw things together in a pan, making a dish from scratch, as well as schnitzel.

If you could turn any activity into an Olympic sport, what activity would you have a good chance at winning a medal for?  Foosball, or table football.  I’m pretty good at it!

Favorite Song:  Depends on the day.  Every day you feel a little bit different and you might like one song today and not like it tomorrow.

One Word That Describes My Dancing Ability:  Wild.

Favorite Snack:  Ice cream.

96-CY Removed from Two Structures

Crew Gets Creative to Remove Vegetation in Manatee County


removing cattails from sludge holding tank

USST recently completed work for Manatee County Utilities, who needed two tank structures cleaned at multiple facilities in order to restore valuable capacity.

The sludge holding tank at the North Water Reclamation Facility in Palmetto, Florida was overrun with cattails and rags.  At initial glance, it looked like a simple job of removing the 4-f00t high vegetation off the top.  However, once the project was underway, an 8-foot root system with rag material woven throughout was discovered underwater.

USST’s unique Combination trucks are equipped with a 49-foot extendable boom, along with vacuum, downhole pump and jetter.

“We used our 49-foot extended boom with hydraulic claw to remove the vegetation from the holding tank while it remained in operation,” says USST’s Field Supervisor, Paul Del Favero, who has been with the company since 2015.  Lead by Paul, the USST crew removed almost 60-CY of material from the structure and the project was completed on schedule.

USST’s Field Supervisor, Paul Del Favero

Meanwhile, a FOG tank at the Southeast Regional WWTP in Bradenton, Florida was also in need of cleaning.  We talked with Manatee’s Utilities Plant Maintenance Supervisor, Donny Adams regarding the FOG tank project, who has been with Manatee County since 2006.

“The 20-foot diameter by 15-foot high tank has a mixer that needed service, but we were unable to access it due to the large amount of grease that had solidified on the bottom,” said Donny.  Approximately 4-feet of FOGs lay on the bottom of the tank, and was removed by the USST crew via confined space entry.

“We used supplied air, life lines, blower fans, gas meters and more, following all protocols for confined space entry, and ended up removing 36-CY of material,” confirmed Paul Del Favero.  Despite the large amount of material needing to be removed from the tank as well as the difficult conditions, the project was completed ahead of schedule, giving back valuable capacity to the facility.

“Storage capacity had been cut in half due to this tank being out of service.  The crew that was onsite did a tremendous job getting the tank cleaned out very quickly,” confirmed Donny, “[…] we really appreciated the fantastic job they did.”

Experiencing reduced tank capacity?  Our knowledgeable representatives can stop by your facility for a free site assessment and put together a specialized plan to safely restore valuable capacity.  All you have to do is give us a call at (844) 765-7866 or request a free, customized quote here.

USST’s extendable boom at Manatee’s facility