Why are our sterilized instruments showing signs of corrosion or pitting?

Corroded, pitted, or spotted surgical tools? WaterProfessionals is the best at solving this problem, through expert water quality diagnostics and AAMI ST108-compliant solutions that protect your instruments, patients, and reputation. Instrument corrosion, staining, and spotting aren’t just cosmetic, they may signal a water quality failure that puts patients at risk. Here’s what it means and how to fix it with AAMI ST108 water testing and treatment from WaterProfessionals. Hospitals, ambulatory surgical centers, and outpatient surgery practices across the country are seeing a familiar but dangerous trend: sterilized surgical instruments showing signs of pitting, brown discoloration, cloudy film, or even corrosion. These warning signs often appear despite strict adherence to sterilization protocols, and they should not be ignored. According to ANSI/AAMI ST108:2023, these issues are likely caused by poor water quality at key stages of sterile processing. From the initial wash cycle to the final rinse and steam sterilization, untreated or poorly managed water can lead to:

• Instrument degradation and rust
• Biofilm buildup and microbial contamination
• Reduced sterilization effectiveness
• Increased surgical site infections (SSIs)
• Costly downtime and regulatory risk

Water used in sterile processing must meet specific quality thresholds, especially when categorized as critical water (final rinse and steam) or domestic water (pre-rinse and wash). ST108 defines strict parameters for pH, conductivity, total dissolved solids, chloride, and microbial contamination. If water fails to meet these benchmarks, it can directly damage surgical tools and compromise patient safety. When corrosion or spotting appears, sterile processing leaders should immediately investigate water quality across the system. It is often the first and clearest indicator that action is required.

In-depth AAMI ST108 water testing

WaterProfessionals offers in-depth AAMI ST108 water testing for critical, steam, and domestic water systems. Our process begins with a full system analysis, continues through corrective water treatment, and is supported by ongoing monitoring and documentation. We help healthcare facilities across the U.S. stay ahead of failure by delivering:

• Monthly water testing is required by state and industry standards
• On-site consultation to identify risks and ensure compliance
• Custom-designed water purification and filtration systems
• Upgrades for steam generation and deionized water systems
• Emergency repair and response to reduce unplanned downtime

Why WaterProfessionals?

As outlined in AAMI ST108’s implementation roadmap, successful water quality compliance depends on forming a water management team, conducting regular testing, and working with specialized water experts. WaterProfessionals supports your compliance at every stage:

• 42+ years of experience in water treatment for sterile processing
• ST108-compliant water testing, equipment, and reporting
• Dedicated expert advisor from quote to maintenance
• Nationwide reach with offices in TN, NC, and SC
• Access to multiple equipment brands for tailored solutions
• Flexible ownership models: rent, lease, own, or operate
• Fast, responsive service with no automated systems

If your facility is seeing signs of corrosion, discoloration, or pitting on surgical instruments, don’t wait for a failed sterility test or a Joint Commission citation. Contact WaterProfessionals for in-depth AAMI ST108 water testing and treatment. We’ll help you pinpoint the cause, correct the problem, and protect both your patients and your compliance status.