How a major children's hospital built a therapeutic splash pad integrated with its inpatient rehabilitation program
A composite case study of a tier-1 pediatric academic medical center building a sterile, ADA-plus, rehab-integrated splash pad on a hospital rooftop terrace — clinical rationale, water-treatment engineering, and outcomes for inpatient families.
Summary
A tier-1 pediatric academic medical center built a $2.3M therapeutic splash pad on a fourth-floor rooftop terrace, integrated formally with the hospital's inpatient rehabilitation program. Sterile-grade UV-and-ozone water treatment, ADA-plus access including hospital-bed and gurney compatibility, and a pediatric-rehab clinical protocol turned the pad into both a respite amenity for inpatient families and an active rehabilitation therapy modality. First-year use logged about 18,400 patient and sibling sessions, and outcomes data is being prepared for peer-reviewed publication.
Key metrics
Background: a respite amenity that became a clinical asset
The Children's Therapeutic Splash Terrace is a composite of tier-1 pediatric academic medical centers — institutions like Cincinnati Children's, Boston Children's, and CHOP — that have combined respite-amenity philanthropy with clinical rehabilitation programming. The originating problem was a recurring observation from inpatient social workers: families with children on long inpatient stays (often 30+ days for oncology, complex cardiac, or post-trauma rehabilitation cases) were experiencing significant emotional and psychological strain from confinement to inpatient floors, and siblings of admitted children were particularly under-served by hospital amenities designed primarily for the patients themselves. A 2021 family-experience survey documented the gap: 78% of long-stay families reported that the hospital's outdoor amenity options were 'inadequate for sibling-and-patient time outside the room,' and 64% of inpatient rehabilitation therapists reported they were unable to deliver pool-based therapy modalities because the hospital's existing therapy pool was scheduled to capacity.
Clinical rationale: the rehab-integration design
What distinguished this project from a standard hospital amenity was the deliberate clinical integration. The hospital's pediatric rehabilitation department — physiatrists, physical therapists, occupational therapists, and child-life specialists — was at the design table from day one. The clinical case rested on three pillars. First, water-based therapy is a clinically-validated modality for pediatric rehabilitation across post-trauma, post-surgical, neurodevelopmental, and oncology-related deconditioning use cases, and the hospital's existing therapy pool was capacity-constrained. Second, sibling integration into therapeutic activities is a well-documented family-systems intervention that improves both patient outcomes and sibling adjustment metrics. Third, outdoor environmental exposure for long-stay inpatient children has measurable effects on circadian rhythm, mood, and inpatient length-of-stay — a body of literature the hospital's family-experience research team had been building for nearly a decade. The pad was designed as a clinical asset, not just an amenity.
Engineering: sterile water and the rooftop terrace
The pad sits on a structurally-reinforced fourth-floor rooftop terrace adjacent to the inpatient rehabilitation gym, deliberately co-located so that therapy sessions could move seamlessly between indoor gym work and pad-based water work. The water-treatment specification was the most demanding ever designed for a splash pad in the design firm's portfolio. The recirculation system runs UV treatment plus ozone injection plus 0.5-micron filtration (versus the typical 5-micron splash pad standard), with continuous chlorine, ORP, pH, and turbidity monitoring tied directly into the hospital's facilities operations dashboard. The water meets sterile-recreational-pool standards exceeding standard public-pool code, with quarterly third-party microbiological audits including specific testing for Pseudomonas, Legionella, and Cryptosporidium. The mechanical building was designed for redundancy — primary and backup filtration trains, dual UV banks, dual ozone generators — so that any single component failure does not require a pad shutdown.
ADA-plus design: bed and gurney compatibility
Standard ADA splash-pad access provides wheelchair-grade entry and transfer benches. The therapeutic pad needed dramatically more. The pad surface was designed at a specific 1.5% slope across the entire footprint to accommodate hospital beds and gurneys rolled directly into low-spray zones for patients who could not transfer out of bed. Three dedicated 'bed bays' along the pad perimeter provide level concrete pads sized for a standard hospital bed plus accompanying IV pole, with overhead retractable shade canopies and integrated medical-grade outlets for ventilator or infusion equipment when needed. Transfer surfaces, sensory-integration features for children with autism and sensory processing differences, and adaptive-equipment-compatible feature heights (lower bubblers, side-access activation buttons, vertical chrome bars at multiple heights) all extend beyond the ADA baseline. The pad was reviewed and signed off by the hospital's pediatric ADA compliance committee, which includes both clinical and family-advisor members.
Funding model: foundation philanthropy and a naming gift
The $2.3M construction budget came together almost entirely through hospital foundation philanthropy. A single $1.4M naming gift from a family whose own child had been a long-stay rehabilitation patient anchored the project; the family declined hospital-floor naming opportunities in favor of the splash terrace specifically, citing the months of family time they had spent on inadequate inpatient amenities during their child's stay. The remaining $900,000 came from a combination of mid-level hospital foundation grants, a regional water-utility corporate giving program (which valued the public-health and water-stewardship messaging tie-in), and a small unrestricted hospital capital allocation that covered the rooftop structural-reinforcement engineering. Operating costs are absorbed within the inpatient rehabilitation program's annual budget, with the family-experience department contributing a portion against the respite-amenity benefit.
Construction and the operational hospital constraint
Construction on an active inpatient hospital is a categorically harder problem than most aquatic-design firms have encountered. The project ran 18 months from groundbreaking to opening, with three primary constraint layers. First, the hospital's infection-control protocols required dust-and-particulate isolation during all interior demolition phases — the rooftop terrace work involved cutting into existing building systems for water, drain, and electrical service, and the dust-isolation regime added roughly 8% to construction cost. Second, the hospital's noise-management protocols restricted high-decibel construction work during pediatric quiet hours, which compressed available daily work windows. Third, the rooftop crane logistics for delivering the recirculation reservoir and mechanical equipment required full-day adjacent-street closures coordinated with city public works, hospital security, and the emergency department's helicopter approach corridor.
Opening reception and the first inpatient therapy session
The pad opened in spring 2024 with a deliberately quiet ribbon-cut — the hospital's family advisory council had specifically requested no media presence at opening to protect patient and sibling privacy. The first formal inpatient therapy session, on opening week, involved a 7-year-old post-trauma rehabilitation patient who had been confined to inpatient floors for 47 days. The session was filmed (with family consent) for the hospital's foundation development materials and became one of the most-cited assets in the foundation's subsequent $40M capital campaign. First-year usage logged approximately 18,400 patient-and-sibling sessions, with the typical session running 35–45 minutes and integrating both therapeutic and respite-amenity modalities. Family-experience survey scores for long-stay inpatient families improved measurably across the first year of pad operation.
Outcomes, peer-reviewed publication, and the next two pads
The hospital's pediatric rehabilitation research team began collecting structured outcomes data from pad-integrated therapy sessions immediately at opening, with IRB approval and informed family consent. Preliminary outcomes data — being prepared for peer-reviewed publication in a pediatric rehabilitation journal — suggests that pad-integrated therapy sessions produced higher patient engagement scores, longer effective therapy durations, and higher sibling-participation rates than equivalent indoor-gym-only sessions for matched patient populations. The research team is appropriately cautious about claiming length-of-stay or readmission effects without longer follow-up data. Two additional therapeutic splash pads at peer pediatric academic medical centers in the region are now in various design phases, both consulting with the originating hospital's clinical-design team as references.
Replicability for other pediatric hospitals
The Children's Therapeutic Splash Terrace model is replicable for the roughly 50 tier-1 pediatric academic medical centers in the United States with active inpatient rehabilitation programs, family-experience research capabilities, and donor pipelines capable of supporting a $2M+ specialty-amenity project. The single biggest replicability filter is the clinical integration commitment — a hospital that builds the pad as a pure amenity without the rehabilitation department at the design table will under-realize the clinical value and may find the operating-cost ownership question politically unstable. The second filter is the structural-engineering feasibility for rooftop terrace siting; ground-floor courtyard sites work but lose the inpatient-floor proximity advantage. The third filter is the donor-pipeline appetite for naming a pediatric amenity over a traditional inpatient floor or research lab; this conversation requires careful donor cultivation.
Voices from the project
“We didn't build a splash pad. We built a treatment modality that happens to be joyful. That framing changed every design decision.”
“After 47 days inpatient, my daughter laughed for the first time on this terrace. Whatever it cost, it was the right amount.”
“The bed-bay design specification was the hardest engineering problem in my career. Worth every meeting.”
Lessons learned
- Bring the clinical rehabilitation department to the design table from day one, not as a reviewer.
- Design for hospital beds and gurneys, not just wheelchairs — full ADA-plus including bed-bay zones.
- Specify sterile-grade water treatment (UV + ozone + 0.5-micron) with redundancy and continuous monitoring.
- Co-locate the pad with the inpatient rehab gym to enable seamless indoor-outdoor therapy transitions.
- Build the construction logistics plan around infection control, quiet hours, and helicopter corridors.
- Open quietly without media presence to protect patient and sibling privacy at first sessions.
- Set up IRB-approved outcomes data collection at opening, not as an afterthought.
FAQ
How much does a therapeutic hospital splash pad cost?
Therapeutic pediatric-hospital pads typically run $1.8M–$3.0M, depending on rooftop versus ground-floor siting, water-treatment specification, ADA-plus engineering, and structural-reinforcement scope. The composite project landed at $2.3M.
Why does a hospital splash pad need sterile-grade water treatment?
Pediatric inpatient populations include immunocompromised, post-surgical, and neonatal-graduate patients for whom standard public-pool water quality is insufficient. UV + ozone + sub-micron filtration meets the elevated standard, with quarterly third-party microbiological audits.
Can a splash pad really be a therapy modality?
Yes — water-based therapy has a long evidence base in pediatric rehabilitation, and an outdoor pad with bed-and-gurney access extends the therapy-pool envelope to patient populations who cannot transfer into a traditional therapy pool. Outcomes data from rehab-integrated pads is now entering peer-reviewed publication.
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