Water quality issues in sterile processing do not always appear first as a failed water test. They can show up as stained instruments, scale, corrosion, recurring washer or sterilizer problems, extra cleaning, repeat processing or reduced capacity. The hidden cost can extend into instrument life, equipment reliability, staff time, workflow and Sterile Processing Department (SPD) uptime.
In 2026, ECRI ranked poor water quality during instrument sterilization among its Top 10 Health Technology Hazards. ECRI warns that insufficiently pure water during high-level disinfection or sterilization can create patient-exposure risk, damage instruments or leave visible debris that makes them unsuitable for use, and reports cases where water-quality challenges significantly curtailed operating-room procedure volumes. It recommends that healthcare organizations work toward the goals of ANSI/AAMI ST108:2023, Water for the Processing of Medical Devices.
Envirogen is seeing that shift firsthand across live healthcare projects, as hospitals move from understanding ST108 to assessing, specifying and implementing the water-system changes needed to support it in practice.
WATER-QUALITY PROBLEMS NEED ROOT-CAUSE INVESTIGATION
A stain, deposit, leak or equipment alarm should trigger investigation, not an automatic conclusion that the water system has failed. Similar symptoms can involve water impurities, cleaning chemistry, steam or condensate, equipment condition or several factors together.
ST108 is an American National Standard rather than a federal regulation. But where recurring water, instrument or equipment problems are affecting a department, it provides a benchmark against which the facility can review its approach alongside the relevant manufacturers’ instructions for use (IFUs). That helps move the discussion from reactive fixes toward evidence-based corrective action or capital investment.
STERILE PROCESSING WATER QUALITY IS AN ASSET-PROTECTION ISSUE
Unsuitable sterile processing water quality can contribute to mineral residues, scale, staining, corrosion and pitting on instruments and processing equipment. For hospitals, water quality for surgical instruments and reprocessing equipment is an asset-protection and operational-resilience issue.
The cost may include extra inspection, manual cleaning, repeat processing, service calls, component replacement and instrument repair. If a washer or sterilizer is unavailable, remaining capacity has to absorb the load. Where redundancy is limited, a recurring hospital water quality problem can become an uptime, workflow and business-continuity issue.
PHOEBE PUTNEY SHOWS THE VALUE OF A HOSPITAL-WIDE VIEW
A January 2026 AAMI case study from Phoebe Putney Memorial Hospital in Georgia shows why repair history and water-quality evidence should be reviewed together. Independent testing found silica approaching 33 mg/L, with more than 20 of the 33 contaminants tested exceeding ST108 limits. AAMI also reported nearly 100 repair orders for autoclave water leaks since 2018, together with extensive replacement of corroded piping, connections and valves. The case concerned existing hospital infrastructure unrelated to Envirogen, but it demonstrates why recurring equipment failures and water-quality issues should trigger investigation across the wider system rather than being treated as isolated problems.
At Phoebe Putney, that wider investigation involved Biomedical Engineering and central sterile processing (CSP) leadership reviewing ST108 alongside documented failures, downtime and asset condition. An asset-replacement scoring method was then used to support capital planning, turning the investigation into a standards-aligned strategy rather than another repair cycle.
AAMI also records a recommendation to involve Facilities and Supply Chain earlier and to compare RO vendors more systematically. That points to a broader implementation lesson: water-system decisions are stronger when the relevant hospital stakeholders and experienced water-treatment specialists are brought together in a multidisciplinary review before the ST108 specification is fixed.
FOLLOW THE EVIDENCE ACROSS THE COMPLETE PROCESS
At a high level, a structured review should bring the evidence together across five areas:
- Symptoms and history: What is happening, where and how often, and what does the repair history show?
- Requirements: What water quality do the equipment and device IFUs require?
- Testing evidence: What does representative testing show at the incoming supply, treatment system and relevant points of use, including steam or condensate where applicable?
- Complete pathway: Could treatment, storage, distribution, recirculation, materials, chemistry, equipment condition or point-of-use conditions be contributing?
- Operational impact: What is the effect on rework, downtime, capacity, repeated repairs, asset life and total cost of ownership?
Our separate articles on sterile processing water testing and the complete ST108 water pathway cover testing and infrastructure in more detail. Where the evidence suggests a wider system issue, a site review before selecting a new ST108 water system can establish what can remain, what needs verification and what may need modification, upgrade or replacement.
MOVE FROM REACTIVE REPAIR TO A STANDARDS-BASED ASSET STRATEGY
The strongest response brings CSP/SPD leadership, Biomedical Engineering/Healthcare Technology Management (HTM), Facilities/Engineering, equipment manufacturers and an experienced water-treatment specialist together around the evidence. An independent technical viewpoint can challenge established assumptions about the existing approach, test whether like-for-like replacement is really the best answer, and give the hospital a stronger technical, operational and financial basis for deciding what investment is justified.
When water quality issues in sterile processing recur, the case for intervention should combine water evidence, repair and downtime history, operational consequences, lifecycle cost and the wider implications of recurring failure. This gives the hospital a clearer basis for deciding whether the right response is targeted remedial action, an upgrade to existing infrastructure or investment in a replacement water-treatment system. The decision is not only about equipment cost or technical performance. It is also about protecting service continuity, demonstrating appropriate professional standards and giving stakeholders confidence that identified risks are being addressed responsibly.
Envirogen works with hospital teams, original equipment manufacturers (OEMs), consulting engineers and wider project stakeholders to assess, engineer and deliver complete water-treatment solutions. Depending on the feedwater and site requirements, that can include pretreatment such as water softening, reverse osmosis (RO), storage, distribution interfaces, monitoring and lifecycle support. EndoTherm healthcare water purification systems are backed by Envirogen’s performance guarantee, with the agreed duty and criteria confirmed for each installation.
The goal is not simply to repair the next failure, but to use the evidence to address the underlying water-system risk and protect instruments, equipment and sterile-processing uptime over the long term.
ADDITIONAL READING
- ANSI/AAMI ST108 Explained: What Water Quality Requirements Mean for Sterile Processing
- From AAMI TIR34 to ST108: What Changed for Sterile Processing Water?
- Sterile Processing Water Requirements: Designing the Complete ST108 Water Pathway
- Sterile Processing Water Testing: What Hospitals Need to Verify
- Hospital Sterile Processing Water Specification: What Should Be Reviewed on Site Before Selecting a New ST108 Water System?
- Thermal Sanitization vs Chemical Sanitization for Sterile Processing Water Systems
- Maintaining Performance After Commissioning: ST108 Water Monitoring, Testing and Lifecycle Support
GET YOUR FREE ST108 CONSULTATION
Seeing recurring staining, scale, equipment failures or water-quality issues in your SPD? Talk with Envirogen about source water, treatment, distribution, equipment interfaces and lifecycle impact before another reactive fix is made.
Request a free ST108 consultation to discuss the next steps for your site.