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Central Sterile Water Systems

The quality of water is important to the operation of sterile processing equipment. Water can actually be detrimental to washing, disinfection and sterilization equipment, and to the condition and life of surgical instruments, if it does not meet manufacturers’ specifications. Some of the systems that require high purity water include:

  • Automated Endoscope Reprocessors (AERs)
  • Stills and Steam Disinfection Boilers
  • Medical Washers / Disinfectors
  • Glassware Washers

Recently AAMI (Association of the Advancement of Medical Instrumentation) published ANSI/AAMI ST108:2023 Water for the Processing of Medical Devices, which replaces the AAMI TIR34 guidelines. The purpose of this standard is to establish quality criteria for various types of water utilized in the processing of medical devices. It also offers guidance on the appropriate times and contexts for the use of each water category. These standards are divided into three segments for medical device reprocessing: utility water, critical water and steam. Critical water is held to a higher level. This water is treated to ensure microorganisms and inorganic and organic material are removed and is used for the final rinse and for producing steam.

AAMI ST108 places significant importance on:

  • Proper Water System Design
  • Distribution Loop Design
  • Monitoring of the Water System
  • Routine Water Quality Testing
  • Routine Maintenance And Disinfection

Additional Items Required, W2 Systems can help develop in conjunction with Hospital staff::

  • A Water System Management Program
  • Cross-Functional Team With Assigned Responsibilities
  • Validation and Risk Assessment Protocols For The Water System

W2 Systems water filtration systems meet the AAMI ST108 water quality specifications for washers, disinfectors, glassware washers, steam boilers and final rinses. Our water systems combined with proper maintenance and monitoring will help you to meet the ST108 requirements.

Contact us today for a free consultation about your water filtration needs at 415.468.9858 or

W2 Systems also provides a line of FDA cleared filters for sinks, showers and ice machines, which aid in infection control.

Complete water treatment systems for Central Sterile Processing from W2 Systems are designed to use a minimum of valuable floor space and provide high quality water for washing, rinsing and disinfecting.

The MRO product line is perfect for dialysis applications ranging from single patient through multi stations. Each unit has everything you need to transform your tap water into dialysis quality water.

With reverse osmosis systems and deionizer packages that produce up to 18 meg ohm water quality, W2 Systems has the right ultra pure water system for your laboratory.

Using high quality water in your blood analyzer produces consistent results. W2 Systems offers a range of water treatment systems to meet your flow rate and volume requirements – along with your budget.

Getting residue-free glassware is easy with water treatment from W2 Systems. A variety of reverse osmosis and deionizer systems are available based on your daily usage.

Treated water for endoscope reprocessing reduces the risk of patient infection. W2 Systems offers water treatment systems that reduce bacteria, particulate and total dissolved solids for endoscope reprocessing and rinsing.

W2 Systems can provide analysis of your water, selection and implementation of the correct equipment and services needed to not only comply with ST108, but have the engineered solutions and support services to ensure that your facility continuously meets and/or exceeds those standards.
W2 Systems provides water management planning implementation and follow-on services to ensure your facility complies with and shows proof of meeting and/or exceeding those requirements, including engineering solution implementation and on-site services and lab analyses.

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If you have a question, we’ll answer it in simple terms, so that you understand your equipment.