Commercial pool operators are often asked to do two things at the same time: maintain safe, clear, comfortable water and control operating costs. That can be difficult because aquatic facilities are expensive to run. Chemicals, electricity, equipment maintenance, staff time, water replacement, ventilation and customer experience all affect the bottom line.
When facilities compare water treatment options, the conversation often starts with purchase price. How much does the equipment cost? What is the installation cost? What are the monthly chemical costs? These are important questions, but they do not tell the whole story.
A more useful question is: what is the total cost of ownership?
For aquatic facilities, total cost of ownership includes the direct and indirect costs of keeping water safe, balanced, clear and operational every day. That includes chemical usage, energy demand, replacement parts, maintenance time, labor, troubleshooting, water replacement, air quality complaints, downtime and the overall swimmer experience.
This broader view is especially important when comparing treatment technologies such as UV and Hydroxyl-Based AOP (advanced oxidation process).
The Difference Between Price and Cost
The price of a water treatment system is the amount paid to purchase and install it. Cost of ownership is what the facility spends to operate, maintain and support that system over time.
A system with a lower purchase price may not always be the lower-cost option if it requires higher chemical use, more electricity, frequent component replacement or more operator attention. Likewise, a system with a higher initial cost may provide long-term value if it reduces operating expenses, improves water quality stability and lowers the number of corrective actions required.
For commercial aquatic facilities, recurring costs often matter more than the initial purchase price. Pools operate for years. Many operate every day. Small differences in chemical demand, energy use, service requirements and labor can become significant over time.
This is why cost calculators can be useful. They help operators look beyond a single equipment quote and evaluate how the system may affect annual operating expenses.
The Major Cost Categories in Aquatic Facilities
Every aquatic facility is different, but most cost-of-ownership conversations include several major categories.
1. Chemical Costs
The first is chemical cost. This includes sanitizer, pH control, alkalinity adjustment, calcium hardness adjustment, shock products, clarifiers, enzymes, phosphate removers, specialty treatments and other products used to correct water quality problems. Chemical cost is easy to track because it appears on invoices, but it is only one part of the operating picture.
2. Energy
The second category is energy. Pumps, heaters, dehumidification systems, air handlers, chemical controllers, UV pool systems, feeders and supplemental treatment equipment all use energy. In indoor facilities, air handling and humidity control can be major operating expenses. Operators should evaluate treatment technologies based on water quality impact, power requirements and how they interact with the broader mechanical system.
3. Maintenance
The third category is maintenance. This includes replacement parts, cartridges, lamps, sleeves, tubing, check valves, sensors, pumps, compressors, service calls, cleaning, calibration and inspection. When operators manage equipment properly, maintenance costs can stay predictable. Ignoring problems or choosing a system that does not fit the application can drive costs up.
4. Labor
The fourth category is labor. Labor is often a hidden cost in pool operations. When water quality is unstable, staff spend more time testing, adjusting, documenting, cleaning, backwashing, responding to complaints and coordinating service. A treatment program that reduces recurring problems may save time even if those savings are not immediately obvious on a monthly invoice.
5. Operational Disruption
The fifth category is operational disruption. Cloudy water, high combined chlorine, odor complaints, equipment failures, and poor swimmer comfort can affect programming, rentals, swim lessons, member satisfaction, and facility reputation. These are real costs, even if they are harder to calculate.
Why Chemical Demand Drives More Than Chemical Cost
Chemical demand is one of the most important cost drivers in commercial pools. Every swimmer adds contaminants to the water. Sweat, urine, body oils, lotions, cosmetics, hair products, dirt and other materials create an oxidation burden.
Chlorine is essential because it provides a measurable sanitizer residual. However, chlorine is also used up as it reacts with contaminants. When bather load increases or water quality becomes unstable, chlorine demand can rise. Operators may then need to feed more sanitizer, adjust pH more often, shock more frequently, dilute water, or use additional products to manage clarity and odor.
This is where chemical demand becomes more than a chemical expense. Higher chemical demand can also increase labor, testing frequency, maintenance and customer complaints. If combined chlorine rises, operators may need to investigate filtration, ventilation, water replacement, bather hygiene and circulation. If water becomes cloudy, staff may need to spend additional time troubleshooting the cause.
In other words, chemical demand affects costs beyond chlorine alone.
How Hydroxyl-Based AOP Fits Into Cost of Ownership
Hydroxyl-Based AOP is a supplemental oxidation technology. It is designed to help break down contaminants at the point of treatment. Hydroxyl radicals are highly reactive and short-lived, which means they do not create a long-lasting residual in the pool water. Operators still need chlorine or bromine to maintain code-required sanitizer levels.
The value of AOP is that it can help reduce the contaminant burden placed on chlorine. Properly applied supplemental oxidation can help chlorine perform its role as a residual sanitizer. This can contribute to more stable water quality and may help reduce the frequency of corrective chemical actions.
From a cost-of-ownership perspective, this matters because stable water is usually less expensive to manage than unstable water. A pool that requires fewer emergency corrections, fewer odor investigations, fewer clarity interventions, and fewer chemical swings can reduce strain on staff and equipment.
AOP is not a magic solution or a replacement for good operations. It still depends on proper flow, turnover, air injection, filtration, water balance and maintenance. But when those fundamentals are in place, AOP can be part of a cost-control strategy.
Comparing AOP and UV Through an Ownership Lens
Commercial aquatic facilities commonly use UV systems to support disinfection and chloramine control. UV can be effective in certain applications, but it also has operating considerations. Facilities should account for energy use, lamp replacement, sleeve cleaning, maintenance requirements and the way UV interacts with overall chemical demand.
Hydroxyl-Based AOP should be evaluated using the same ownership lens. Operators should consider purchase cost, installation, energy use, maintenance, replacement components, expected chemical impact and the facility’s operating profile.
A fair comparison should include questions such as:
- How many hours per day does the pool operate?
- How many days per year is the facility open?
- What is the pool volume?
- What is the flow rate?
- What is the facility’s current annual chemical cost?
- What is the local electricity rate?
- How much maintenance does the current system require?
- How often are lamps, sleeves, cartridges, valves, tubing or other components replaced?
- How often does the facility experience odor, combined chlorine or clarity complaints?
The answers to these questions help operators move from a simple equipment comparison to a true cost-of-ownership comparison.
Flow Rate and Operating Hours Matter
Two facilities with the same pool volume may have very different operating costs. One may operate eight hours per day, while another operates sixteen. One may have a moderate bather load, while another may run swim lessons, therapy sessions, rentals and team practices from morning to night.
Flow rate also matters. Water treatment equipment must be matched to the hydraulic reality of the facility. If the system does not receive the correct flow, or if variable-speed operation causes flow to drop too low during key treatment periods, performance may suffer.
For AOP systems, proper flow and air injection are critical. Too little flow can limit treatment exposure. Incorrect air injection can reduce performance or create operational issues. This is why cost ownership cannot be separated from proper application. A poorly applied system may fail to deliver expected value, even if the technology itself is sound.
Maintenance Planning Protects ROI
Any commercial pool treatment system requires maintenance. The goal is not to eliminate maintenance; the goal is to make maintenance predictable, manageable and cost-effective.
For AOP pool systems, typical maintenance includes:
- Cartridge Exchanges: The only scheduled AOP system maintenance is a 15-minute cartridge exchange once a year. The annual cartridge exchange requires no special tools, professional training or downtime.
- Inspect Parts: Visually inspect key components such as air tubing, check valves, flow meters, compressors and injection points. Check valves are especially important, as they help prevent water from moving where it shouldn’t.
- Diffusers: May require inspection or cleaning depending on water balance, scale potential, debris and facility conditions.
For UV pool systems, typical maintenance includes:
- UV Lamp Replacement: Replace lamps at the end of their rated service life. Without a bypass, servicing may require operational downtime to isolate the UV unit.
- Quartz Sleeve Cleaning: Periodically remove, inspect and descale quartz sleeves to maintain UV performance. Replace sleeves if damaged or no longer effectively cleanable.
- O-Ring and Seal Replacement: Inspect for leaks, wear and damage and replace as needed. Some systems require scheduled O-ring replacement with UV lamp changes.
- UV Vessel Cleaning: Periodically inspect and clean the vessel to remove scale and buildup. Servicing requires taking the UV unit offline and draining the vessel.
- Electrical and Controls: Routinely inspect lamp operation, alarms, sensors and other control components where equipped. Electrical troubleshooting or repairs to ballasts, power supplies and connections require qualified personnel.
The best cost-of-ownership analysis includes these recurring maintenance items. A system that looks inexpensive upfront may become more expensive if it requires frequent service or if neglected maintenance leads to performance loss.
The Hidden Value of Water Quality Stability
Stable water has financial value. Operators can spend more time managing the facility and less time reacting to problems when they maintain clear, balanced and predictable pool water.
Stable water can reduce customer complaints, staff frustration, chemical corrections, emergency service calls and interruptions to programming. It can also support a better swimmer experience. For swim schools, hotels, universities, recreation centers, therapy pools and waterparks, that experience directly affects reputation and retention.
This does not mean AOP alone creates stability. Water quality stability comes from the full operating program: sanitizer residual, oxidation, filtration, circulation, ventilation, source control, water replacement and operator expertise. But supplemental oxidation can play an important role in reducing the burden on the rest of the system.
What Operators Should Track Before Comparing Systems
Before making a treatment decision, operators should gather baseline data. This makes cost comparisons more accurate and helps avoid guesswork.
Useful data includes annual chemical spend, electricity rate, operating hours, operating days, pool volume, flow rate, free chlorine, combined chlorine, pH, ORP, alkalinity, calcium hardness, CYA where applicable, TDS, water temperature, backwash frequency, water replacement, service history and complaint history.
Operators should also document maintenance costs, replacement parts, staff time spent on water quality correction and any programming disruptions caused by water issues.
The better the input data, the more meaningful the cost-of-ownership analysis becomes.
The Bottom Line
Aquatic facility cost of ownership is bigger than chemical spend and equipment price. It includes chemicals, energy, maintenance, labor, water replacement, air quality, swimmer comfort and operational reliability.
Hydroxyl-Based AOP can support cost control by adding supplemental oxidation and helping reduce the contaminant burden placed on chlorine. When properly applied and maintained, it may help facilities improve water quality consistency, reduce chemical demand and lower the operational strain associated with recurring water problems.
The key is to evaluate treatment options through the full ownership picture. Operators should compare not only what a system costs to buy, but what it costs to operate every day. They should consider chemical impact, energy use, maintenance requirements, staff time, flow rate, operating hours and the value of stable water.
For commercial pool operators, the most cost-effective treatment strategy is rarely based on one number. It is based on understanding the entire facility. When operators connect water treatment decisions to total cost of ownership, they are better equipped to protect their budget, support their staff and deliver a better swimmer experience.
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Louie Warco
Customer Success Manager
