Selecting the right disinfection technology is one of the most important decisions facility operators, engineers, and managers make. Whether you oversee an aquatic center, industrial process system, or municipal treatment facility, your choice impacts water quality, operational safety, regulatory compliance, operating costs, and long-term sustainability.
Disinfection technologies have evolved significantly over the years. Today’s most common options include ultraviolet (UV) disinfection, chlorine-based systems, ozone, and peracetic acid (PAA). Each method has advantages and limitations depending on the application.
In this blog, we take an objective, side-by-side look at ETS-UV compared to ozone, chlorine, and peracetic acid, focusing on cost, safety, performance, and environmental impact. The goal is not to oversimplify the decision, but to provide clarity so you can choose the solution that best fits your facility’s needs.
An Overview of Common Disinfection Technologies
Before comparing systems, it’s helpful to understand how each technology works at a high level.
Ultraviolet (UV) Disinfection
UV systems use germicidal light to inactivate microorganisms by damaging their DNA or RNA, preventing replication. Neptune Benson ETS-UV systems are engineered to deliver a precise UV dose at high flow rates with low headloss.
Chlorine-Based Disinfection
Chlorine disinfects by oxidizing microorganisms. It can be applied as gas, liquid sodium hypochlorite, or calcium hypochlorite and provides a residual in distribution systems.
Ozone Disinfection
Ozone is a powerful oxidant generated on-site. It disinfects rapidly and can improve water clarity, but must be carefully managed due to safety concerns and short half-life.
Peracetic Acid (PAA)
PAA is a strong chemical disinfectant commonly used in wastewater and industrial applications. It breaks down into acetic acid, oxygen, and water.
Each technology plays a role in modern treatment strategies—but not all are equal in every category.
Performance and Disinfection Effectiveness
ETS-UV Performance
ETS-UV systems deliver consistent, measurable disinfection without altering water chemistry. UV is effective against:
-
Bacteria
-
Viruses
-
Protozoa (including chlorine-resistant organisms)
UV works instantly as water passes through the reactor, making performance predictable and easy to verify through sensors and control systems.
Chlorine Performance
Chlorine is effective against many pathogens, but performance depends heavily on:
-
pH
-
Contact time
-
Temperature
-
Organic load
Some microorganisms are more resistant to chlorine, requiring higher doses or longer contact times.
Ozone Performance
Ozone is extremely effective at disinfection and oxidation. However:
-
It must be generated on-site
-
It has no lasting residual
-
Performance drops quickly if system conditions fluctuate
Peracetic Acid Performance
PAA provides strong disinfection and is less sensitive to pH than chlorine. However, dosing accuracy is critical, and overdosing can create operational and safety concerns.
Bottom line:
UV provides consistent, measurable performance without chemical dependency, making ETS-UV highly attractive for facilities seeking predictable results.
Operational Safety and Risk Management
ETS-UV Safety Advantages
One of UV’s strongest advantages is safety. ETS-UV systems:
-
Use no hazardous chemicals
-
Eliminate chemical storage and handling risks
-
Reduce staff exposure to fumes or spills
-
Lower insurance and compliance risks
Maintenance is mechanical and electrical, not chemical—making training simpler and safer.
Chlorine Safety Risks
Chlorine systems introduce several safety challenges:
-
Chemical storage and delivery risks
-
Potential for gas leaks or spills
-
Corrosive exposure to staff and infrastructure
-
Increased regulatory and emergency planning requirements
Facilities using chlorine must invest heavily in safety training and mitigation.
Ozone Safety Risks
Ozone is toxic at low concentrations and must be fully contained. Risks include:
-
Ozone gas leaks
-
Strict ventilation requirements
-
Complex monitoring systems
-
Higher operator training requirements
Peracetic Acid Safety Risks
PAA is corrosive and requires careful handling. Risks include:
-
Chemical burns
-
Storage and spill containment concerns
-
Specialized PPE requirements
Bottom line:
ETS-UV significantly reduces operational risk by eliminating hazardous chemical handling altogether.
Environmental Impact and Sustainability
ETS-UV Environmental Benefits
UV disinfection is widely recognized as an environmentally responsible solution. ETS-UV systems:
-
Add no chemicals to water
-
Produce no disinfection byproducts
-
Reduce chemical transportation emissions
-
Support sustainability and ESG goals
UV aligns well with facilities seeking to reduce their environmental footprint without compromising performance.
Chlorine Environmental Considerations
Chlorine can form disinfection byproducts (DBPs) that may impact:
-
Air quality (especially indoors)
-
Water quality downstream
-
Environmental compliance requirements
Transporting and storing chemicals also adds environmental burden.
Ozone Environmental Considerations
Ozone breaks down quickly and leaves no residual, but:
-
Energy use for generation can be significant
-
Equipment complexity increases lifecycle impact
Peracetic Acid Environmental Considerations
PAA breaks down into relatively benign compounds, but:
-
Production, transport, and handling still carry environmental costs
-
Overdosing can affect downstream processes
Bottom line:
ETS-UV offers one of the cleanest disinfection profiles available today.
Cost Comparison: Upfront vs. Lifecycle
Initial Capital Costs
-
ETS-UV: Moderate upfront investment
-
Chlorine: Lower initial equipment cost
-
Ozone: Higher capital cost due to generators and controls
-
PAA: Moderate initial system cost
While chlorine often appears cheaper initially, capital cost alone rarely tells the full story.
Operating and Maintenance Costs
ETS-UV
-
Predictable lamp replacement intervals
-
Minimal chemical costs
-
Lower labor requirements
-
Reduced corrosion-related maintenance
Chlorine
-
Ongoing chemical purchases
-
Safety equipment and training
-
Corrosion damage to facilities
-
Air quality mitigation costs
Ozone
-
High energy consumption
-
Skilled maintenance requirements
-
Replacement of generators and components
Peracetic Acid
-
Continuous chemical dosing costs
-
Storage and handling infrastructure
-
Monitoring and safety compliance costs
Total Lifecycle Cost
When evaluated over 10–20 years, ETS-UV systems often deliver lower total lifecycle costs due to:
-
Reduced chemical expenses
-
Fewer safety-related costs
-
Minimal impact on surrounding infrastructure
-
Long equipment life
This is especially true in aquatic facilities, indoor environments, and high-flow industrial systems.
Ease of Operation and Reliability
ETS-UV
-
Automated controls
-
Real-time UV intensity monitoring
-
Simple operator training
-
Low operational variability
Chlorine
-
Requires continuous chemical management
-
Sensitive to water chemistry changes
-
Operator error can significantly impact performance
Ozone
-
Complex systems with multiple failure points
-
Requires skilled technicians
-
Sensitive to operational changes
Peracetic Acid
-
Requires accurate dosing control
-
Operator oversight is critical
Bottom line:
ETS-UV systems are among the easiest disinfection technologies to operate consistently.
Regulatory Acceptance and Compliance
UV disinfection is widely accepted across:
-
Aquatic health codes
-
Municipal treatment standards
-
Industrial reuse and discharge requirements
ETS-UV systems provide:
-
Verifiable dose measurement
-
Data logging and reporting
-
Proven compliance performance
Chemical systems often require additional monitoring, documentation, and safety audits.
Technology Comparison Summary
| Category | ETS-UV | Chlorine | Ozone | Peracetic Acid |
|---|---|---|---|---|
| Chemical-Free | ✓ | ✕ | ✓ | ✕ |
| Operator Safety | High | Low–Moderate | Moderate | Moderate |
| Environmental Impact | Low | Moderate–High | Moderate | Moderate |
| Maintenance Complexity | Low | Moderate | High | Moderate |
| Lifecycle Cost | Low–Moderate | Moderate–High | High | Moderate |
| Indoor Air Quality | Excellent | Poor–Moderate | Moderate | Good |
Why Many Facilities Choose ETS-UV as the Primary or Complementary Solution
Increasingly, facilities are choosing ETS-UV because it:
-
Enhances safety for staff and patrons
-
Improves water and air quality
-
Reduces long-term operating costs
-
Simplifies regulatory compliance
-
Supports sustainability initiatives
In many cases, UV is used alongside reduced chemical dosing—delivering the benefits of both approaches while minimizing drawbacks.
How Orca Pacific Helps You Choose the Right Solution
Selecting the right disinfection strategy isn’t one-size-fits-all. Orca Pacific works closely with facility operators, engineers, and decision-makers to evaluate:
-
Flow rates and hydraulic conditions
-
Water quality characteristics
-
Regulatory requirements
-
Budget and lifecycle expectations
As an experienced supplier of Neptune Benson ETS-UV systems, Orca Pacific helps ensure your solution is properly sized, configured, and supported over its full lifespan.
Looking Ahead: The Future of Disinfection
As regulations tighten and facilities prioritize safety and sustainability, UV continues to gain momentum across industries. Advances in lamp efficiency, controls, and monitoring make systems like ETS-UV even more reliable and cost-effective.
For facilities planning long-term investments, UV offers a future-ready approach that aligns with evolving operational and environmental expectations.
Discover how ETS-UV can lower your total lifecycle cost.
Contact Orca Pacific to learn how Neptune Benson ETS-UV systems can support safer operations, better water quality, and long-term value for your facility.
