Cowart Industrial provides cooling tower cleaning for industrial plants, data centers, and campus utility systems across the Southeast. A cooling tower is an air washer whether you want it to be or not: it scrubs dust, pollen, and process fallout out of every cubic foot of air it moves, and all of it settles in the basin as sludge, packs into the fill as scale and biofilm, and plates onto the distribution nozzles. Our scope covers the whole tower: basin and sump sludge removal with vacuum trucks, fill cleaning matched to the fill type, distribution deck and nozzle cleaning, drift eliminator and louver washing, and structure and casing pressure washing.
The work is engineered around two constraints. First, most towers can't come fully offline, so we clean cell by cell under lockout, one cell isolated and drained while the rest carry the load. Second, modern film fill is fragile: hit it with a hydroblast wand and you destroy it. Fill cleaning is done with low-pressure washing or circulated chemistry depending on the fill type and the deposit, drawing on the same chemical cleaning capability we run for heat exchangers and boilers. Where the facility runs a water management program, we coordinate disinfection steps with the water treatment provider and document every cleaning event for the program's records.
Everything that comes out of the tower leaves on our equipment. Basin sludge is vacuumed directly into our tankers, transported under Cowart's DOT number, and processed at our own non-hazardous wastewater treatment plant in Carrollton, Georgia. No third-party disposal handoff, no sludge drying in a corner of your yard, one vendor from the first vacuum pass to the disposal record. Crews carry HAZWOPER-40, OSHA-30, and confined-space entry certification, and the basin of a cooling tower is a permit-required confined space more often than operators expect.
Why towers foul, and what cleaning actually removes
Three things accumulate in a cooling tower, and they arrive by different routes. Silt and airborne debris are scrubbed out of the air stream, the tower moves enormous volumes of outside air, and everything in that air that touches wet surface stays. Scale comes from the water itself: evaporation concentrates dissolved minerals, and past the saturation point they precipitate onto the hottest, wettest surfaces, which is the fill. Biofilm grows wherever there's warm water, nutrients, and surface area, and a cooling tower is close to a purpose-built incubator.
The cost of leaving it alone shows up as approach temperature creep. Fouled fill transfers less heat, so the tower supplies warmer water, so the chillers work harder, and chiller energy is usually the single largest line on the utility bill of any facility that runs one. Deposit-covered surfaces also corrode underneath the deposit where inhibitors can't reach, and an inch of basin sludge is exactly the warm, sheltered, low-flow habitat that Legionella colonizes. Cleaning is not cosmetic. It's heat transfer recovery, corrosion control, and pathogen habitat removal in one scope.
Data centers, where the cooling system is the plant
At a data center, cooling is not a support system, it is half the facility. Evaporative cooling towers and condenser water loops carry the entire heat rejection load for the white space, and a degraded tower shows up directly as lost cooling capacity and higher PUE. The good news is that data center cooling plants are built with redundancy, N+1 or better, which is exactly what cell-by-cell cleaning is designed for: we take one tower or cell at a time while the redundant capacity carries the load, and the facility never drops below its required cooling margin.
We support data centers across the construction and operations cycle: pre-commissioning flushing and cleaning of condenser water loops and tower basins before the plant goes live (see our line flushing service for the loop side of that scope), first-year cleanouts after construction dust has worked through the system, and recurring basin and fill cleaning on the semiannual cycle most water management programs specify. With the volume of data center construction underway across Georgia and the Southeast, we built this scope to be scheduled the way data centers need it: documented, badged, escorted where required, and off the critical path.
Cleaning, disinfection, and your water management plan
Most facilities that operate cooling towers now maintain a water management program consistent with ASHRAE Standard 188 and CDC guidance on Legionella control, and those programs almost always call for periodic mechanical cleaning and disinfection of the towers. Cowart is the mechanical arm of that plan. We do the physical work the program requires, basin sludge removal, fill and distribution cleaning, and the disinfection steps, coordinated with your water treatment provider who owns the ongoing chemistry.
Every cleaning event is documented: date, scope, cells cleaned, disinfection performed, and waste disposition, in a format your program administrator can drop straight into the plan's records. If your program is audited, or if you ever face a Legionella investigation, the cleaning records are the evidence that the plan was followed. We treat the paperwork as part of the deliverable, not an afterthought.
Industries we serve
Where we work
- Atlanta
- Augusta
- Columbus
- Macon
- Savannah
- Carrollton
- LaGrange
- Newnan
- Rome
- Birmingham
- Mobile
- Montgomery
- Huntsville
- Tuscaloosa
- Anniston
- Knoxville
- Chattanooga
- Nashville
- Memphis
- Columbia
- Charleston
- Greenville
- Spartanburg
- Charlotte
- Raleigh
- Greensboro
- Wilmington
- Jacksonville
- Tampa
- Pensacola
- Panama City
- Jackson
- Meridian
- Pascagoula
- Gulfport
- Louisville
- Lexington
- Owensboro
- Paducah
Common questions
Quick answers on scope, method, safety, and turnaround. Don’t see your question? Ask us directly.
Q-01What does cooling tower cleaning include?
A full-scope cleaning covers the basin and sump (sludge vacuumed out with our trucks), the fill (cleaned by low-pressure wash or circulated chemistry depending on fill type), the distribution deck and spray nozzles, drift eliminators, louvers, and the structure and casing. Disinfection steps are performed where the facility's water management program calls for them, coordinated with the water treatment provider.
Q-02Can you clean a cooling tower without shutting the plant down?
Usually, yes. Multi-cell towers and redundant tower plants are cleaned cell by cell: one cell is isolated, locked out, and drained while the remaining cells carry the cooling load. This is the standard approach for data centers and process plants that cannot drop cooling capacity. A single-cell tower with no redundancy needs a planned outage window, often scheduled overnight or in shoulder season.
Q-03How often should a cooling tower be cleaned?
Most water management programs specify mechanical cleaning and disinfection at least twice a year, typically spring startup and fall shutdown, plus additional cleanings if inspection finds visible fouling. Sites with heavy airborne loading (construction nearby, agricultural dust, process fallout) often need quarterly basin cleaning. New facilities should also plan a first-year cleanout, because construction debris works through the loop for months after startup.
Q-04Do you handle Legionella disinfection?
We perform the mechanical cleaning and disinfection procedures that water management programs (ASHRAE 188, CDC guidance) require, sludge removal, fill and surface cleaning, and chlorination steps, coordinated with your water treatment provider who owns the ongoing chemistry. Every event is documented for the program's records. We are the mechanical arm of the plan, not a replacement for it.
Q-05What happens to the sludge from the basin?
It's vacuumed directly into our tankers, transported under Cowart's DOT number, and processed at our own non-hazardous wastewater treatment plant in Carrollton, Georgia. You get the disposal record as part of the job documentation, and nothing is left on site to dry out or dispose of separately.
Q-06Do you clean data center cooling towers?
Yes. Data center condenser water plants are a core focus: cell-by-cell cleaning that stays inside the facility's redundancy margin, pre-commissioning basin and loop cleanouts, first-year post-construction cleanings, and recurring service on the cycle the water management program specifies. Crews work badged and escorted where required, and the schedule is built around the facility's change-management process.
Q-07Will pressure washing damage the tower fill?
It can. Modern film fill (thin thermoformed PVC sheets) is easily destroyed by high-pressure water, which is why fill cleaning is matched to the fill type: low-pressure washing or circulated chemical cleaning for film fill, more aggressive washing for splash fill and structural surfaces. Knowing where the hydroblaster is welcome and where it's forbidden is a large part of doing this work without buying the customer a fill replacement.
Q-08What states do you serve for cooling tower cleaning?
Georgia, Alabama, Tennessee, South Carolina, North Carolina, Florida, Mississippi, and Kentucky. Crews dispatch from Carrollton, GA, west of Atlanta, with vacuum tankers and cleaning equipment on the same mobilization.