Understanding the PHS Indoor Pool Dehumidification Systems and Facility Costs

*UPDATE: PSD removed the PHS pool from the list of potential budget reductions at the March 13, 2026, Study Session. Watch the Study Session online.

Why humidity control matters in aquatic centers

At the February 17, 2026, school Board meeting, district staff presented a list of proposed budget reductions based on Board direction, community feedback, committee discussions, and district-level financial analysis. Each proposed reduction carries impacts, and the goal has been to distribute adjustments across programs rather than concentrate on them in a single area.

One proposal includes the permanent closure of the Puyallup High School Aquatic Center, which could contribute approximately $300,000 toward the district’s reduction target. The proposal also reflects the significant future capital investment needed to maintain the facility, estimated at more than $8.9 million over the next 2–6 years. These costs are separate from the current $15 million reduction target and would require future voter-approved funding.

Community feedback throughout our discussions has highlighted that the Puyallup High School Aquatics Center is viewed by many as more than an athletic facility. For some families and community members, it represents a resource for student safety, access, and equity. Community members have noted the importance of water safety instruction, the limited number of pools available in the region, and the role of school-based aquatic programs for students who may not otherwise have access to swimming instruction. 

District leaders recognize these perspectives and the trade-offs involved. As the district evaluates facility needs, operating costs, and long-term capital investments, these community considerations are part of the broader discussion occurring during the budget restoration process. 

Complexity and long-term costs

While our aquatic centers provide valuable athletic and educational opportunities, they are also among the most costly and complex school facilities to maintain and operate. A significant driver of future capital budget costs for Puyallup High School is the pool building dehumidification system, which plays a critical role in protecting the building’s structure and indoor air quality. Recent Investments in the Facility

Thanks to voter support for the 2024 Capital Levy, several important system improvements are already planned or underway at the pool, including:

• Upgrades to pool pumps, motors, and filtration systems (Summer 2025)
• Cooling tower refurbishment to extend its service life (Summer 2025)
• Lighting re-lamp to LED (Summer 2025)  

Pool mechanical systems tend to age faster than many other building systems because of the high-moisture environment and chemicals, such as chlorine, needed to maintain a safe water environment.

These projects help maintain daily operations. However, additional major facility renewals are projected in the coming years. Based on today’s rates and prices, the estimated cost is approximately $8.9 million over six years, which includes an immediate need of $4.4 million for a dehumidification system and exceeds the funding currently available for the pool.

Projected future needs not currently funded include:

• Dehumidification system replacement – estimated $4.4 million this year
• HVAC water-source heat pumps and controls
• Boiler replacements
• Pool resurfacing
• Lighting upgrades
• Future cooling tower replacement

Large-scale facility projects such as these typically require future voter-approved bond or levy funding.

What Is a Pool Dehumidification System?

Indoor swimming pools create a unique building environment. Warm pool water constantly evaporates into the air, creating high levels of humidity inside the building.

A dehumidification system is designed specifically to manage this environment. It works by:

• Removing excess moisture from the air
• Maintaining safe temperature and humidity levels
• Protecting building materials from moisture damage
• Creating a safe and comfortable environment for swimmers, staff, and spectators

Because pools continuously release moisture into the air, humidity control systems must run consistently and be carefully maintained.

Why Humidity Control Is Critical

Without proper humidity control, moisture can accumulate inside the building.

Potential impacts include:

• Condensation forming on ceilings, walls, windows, and structural elements
• Corrosion of metal components
• Growth of mold or mildew in damp areas
• Deterioration of building materials over time

These conditions can affect both the building structure and the mechanical systems that support the facility.

What Happens If a Dehumidification System Fails?

If the dehumidification system becomes ineffective or stops operating:

• Moisture can accumulate inside the building
• Condensation may collect on ceilings and overhead structures
• In severe cases, moisture can drip from ceilings or beams, sometimes described as “rain inside the building.”
• Prolonged exposure to moisture can lead to dry rot or structural damage, requiring significant repairs. 

For this reason, aquatic facilities require continuous monitoring, mechanical maintenance, and periodic system replacement to maintain safe building conditions for students and the community.

Why Aquatic Facilities Cost More to Operate

Swimming pools are among the most resource-intensive facilities in a school district. Unlike typical classrooms or gymnasiums, pools require multiple specialized systems that operate continuously.

Key cost factors include:

• Water Heating - Pools must maintain a consistent water temperature for physical education classes, athletic practices, competitions, and community swim programs. Heating large volumes of water requires significant energy use year-round.
• Air Temperature and Humidity Control - Indoor aquatic centers rely on specialized ventilation and dehumidification systems to manage moisture and maintain safe air conditioning.
• Water Treatment and Filtration - Pools require continuous filtration and chemical treatment to meet health and safety standards. Water must circulate throughout the day to maintain proper chemical balance and water quality.
• Mechanical Systems - Aquatic facilities rely on specialized equipment such as:
  • High-capacity pumps and filtration systems
  • Water and air heating systems
  • Dehumidification and ventilation systems
  • Monitoring and safety equipment
  • Because these systems operate for long hours in a demanding environment, they require regular maintenance and periodic replacement.
• Staffing and Safety
  • Operating a pool requires trained personnel, including:
  • Certified lifeguards
  • Aquatic instructors and coaches
  • Facility operators trained in pool maintenance and water chemistry
• Moisture Exposure - Aquatic centers operate in highly humid environments. Over time, moisture and chemical vapors can accelerate wear on building materials, mechanical equipment, and structural components. As a result, these facilities often require more frequent maintenance and system upgrades than other school buildings.

Stewardship of Public Facilities

The Puyallup School District is beginning a budget restoration process to address long-term financial challenges and maintain high quality educational services for all students. Throughout this process, the district will keep the community informed about the needs, the reasons behind the decisions, and the steps ahead.

As we make decisions for the budget restoration, PSD is committed to staying focused on what matters most to students and families.

• Student-centered: Prioritizing learning, safety, and well-being
• Equity-focused: Providing fair and inclusive support for all students
• Sustainable: Balancing today’s challenges with future needs
• Data-informed: Using financial and academic data to guide actions
• Transparent: Sharing updates regularly with our community

Maintaining aquatic facilities requires balancing educational opportunities with the long-term cost of operating and maintaining specialized buildings. Mechanical systems like dehumidification units are critical to protecting the facility itself and preserving public investment in the building.

District leaders continue to review facility needs, operating costs, and long-term capital requirements as part of the ongoing budget process.

District stewardship includes maintaining facilities that are safe, climate-controlled, energy efficient, and aligned with student learning needs. Aquatic facilities require specialized systems, and components like dehumidification units play a central role in protecting the building and preserving public investment. 
 
To learn more about Puyallup School District’s Aquatic Centers visit our website School Facilities Planning - Puyallup School District

Read frequently asked questions and answers on our website School Facilities Planning - Puyallup School District