For Facilities leaders, the message is clear: water quality is no longer just an engineering concern—it is a patient safety responsibility.
If water quality fails, washers fail.
If washers fail, sterilization fails.
And when sterilization fails, the OR stops.
2025: The Year ST108 Became Real for SPDs
While ANSI/AAMI ST108 was published in 2023, 2025 was the year it truly landed.
This is the year when:
Sterile Processing Departments (SPDs) nationwide really became aware of ST108
Facilities, Infection Prevention, and SPD leaders began asking “Are we actually compliant?”
Hospitals shifted from theoretical understanding to real implementation planning
ST108 fundamentally changed the expectations placed on hospital water systems used for medical device processing. It moved water quality from a “should-do” recommendation to a defined, auditable requirement.
Now Facilities teams are given:
Mandatory performance thresholds for conductivity, chlorides, and microbial control
Clear expectations for “Critical Water” at the point of use
A standard that no longer allows reliance on annual municipal water reports
Under ST108, hospitals must manage water chemistry where it matters most—inside SPD. If steam generators or washers are fed water that falls outside these limits, the downstream impacts are predictable: scale, biofilm, instrument pitting, failed cycles, and increased infection risk.
This is not theoretical. It’s operational reality.
Change Is Hard—Especially in a 24/7 Hospital Environment
Facilities leaders understand better than anyone that infrastructure change doesn’t happen overnight. Transitioning an SPD to meet ST108 expectations is a marathon, not a sprint—often constrained by legacy systems, limited capital budgets, and the pressure of maintaining continuous clinical operations.
At the same time, waiting carries its own risk.
What 2025 made clear is that reactive water management is no longer defensible. Hospitals need ways to keep water quality visible, documented, and controlled—before it becomes a patient issue and before it ends up in the news.
That’s where a more modern approach begins to matter.
Two Steps Facilities Leaders Can Take Now
1. Establish a High-Resolution Testing Baseline
You can’t manage what you don’t measure.
Most facility water testing focuses on potability—lead, coliforms, or basic safety indicators. ST108 compliance, however, requires understanding the chemistry that affects equipment performance, including hardness, pH, chlorides, and conductivity.
The action:
Conduct a comprehensive water analysis at:
The entrance to your SPD
The point of use feeding sterilizers
Compare those results directly to the ST108 Critical Water table, not municipal thresholds. This baseline becomes the foundation for compliance planning, capital justification, and informed decision-making.
2. Move From Periodic Checks to Continuous Awareness
Many hospitals still rely on periodic manual testing or aging treatment systems that operate largely unseen. When municipal water chemistry shifts—or a system begins to degrade—Facilities often finds out after equipment performance is impacted.
The action:
Introduce tools that provide ongoing visibility into water quality trends, not just snapshots in time. Remote monitoring capabilities allow Facilities teams to:
Track key parameters continuously
Detect deviations early
Document performance for compliance and leadership review
For Facilities leaders navigating ST108, remote monitoring is not about automation—it’s about situational awareness in a complex, high-risk environment.
The Bottom Line
2025 was the year hospital water infrastructure crossed a threshold.
Facilities Engineers are no longer being asked to simply deliver water—they are being asked to help protect patients by ensuring that water consistently meets clinical standards.
The teams that succeed in this new environment will be the ones who stop treating water as a “set-and-forget” utility and start managing it as a precision-engineered clinical asset, supported by data, visibility, and collaboration.
Need an Healthcare Engineering Partner to Help Navigate ST108?
VERDA Water Quality Systems supports Facilities leaders as they adapt to this new reality.
We help hospitals:
Perform high-resolution diagnostic testing aligned with ST108
Implement modern water management and monitoring strategies
Design centralized, high-purity water systems for SPD compliance
At VERDA, we speak SPD. We understand the pressure of maintaining a 24/7 clinical environment while meeting increasingly strict standards.
Let’s make sure your water quality is never the reason your facility becomes a headline.