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ICE MACHINE WATER SAFETY · LOG 10 CERTIFIED · INLINE FILTRATION
Your ice machine has a water supply line. That's where bacteria enter.
MWT inline filters install at the supply line - before the water reaches your machine. Log 10 certified bacterial reduction. No equipment modification. Five-minute install.
Log 10
Bacterial reduction
0.08 µm
Membrane pore size
3,700 gal
Service life
ASTM F838-20 · Log 10
NSF P376
FDA Registered
No machine modification
The three risk points - before the water freezes
#1
Supply line temperature
Water in supply lines remains at ambient temperature between production cycles, within Legionella growth range. The ice machine chills water internally, but upstream lines and hoses are not temperature controlled.
#2
Idle water stagnation
Overnight. Weekends. Low-demand periods. Stagnant water in the supply line and inlet valve is when biofilm forms and bacteria count builds - before the next batch of ice is made.
#3
Direct exposure pathway
Ice is consumed directly or in beverages. While ingestion risk is low, aspiration of contaminated meltwater can introduce bacteria into the lungs. Freezing preserves bacteria until thawing.
Legionella and ice machines in the United States
MWT Inline Pureflow® filters are installed on the supply line, before water reaches the machine. Log 10 certified bacterial reduction. No equipment modification required.
4×
increase in US Legionnaires' cases since 2000 - CDC surveillance
9.3%
average annual case increase rate since 2002 —
CDC
20%
of all US cases are healthcare-associated — highest fatality rate
CMS
names ice machines as a required control point in QSO-17-30 WMPs
Three solutions. One for every facility size.
Pick the right configuration for your setup - all Log 10 certified, FDA registered, no machine modification required.
Option 1 — Standard
Inline Pureflow Blue®
Bacterial filtration at the supply line
0.08 µm
Log 10
3,700 gal
Installs on the cold water supply line entering the ice machine. Hollow fiber 0.08 µm membrane removes Legionella, NTM, and E. coli before water enters the unit. Standard threaded pipe connections.
✓ BEST FOR
Single-machine installs · Hotels · Dental offices · Small clinics · Any standard ice machine with a water supply line
Option 2 — Full Protection
Inline Pureflow Blue® + Red®
Sediment pre-filter + bacterial filtration
0.08 µm Final Stage
2 stages
Log 10
The Red® sediment strainer (20µm + 10µm) captures particles and scale upstream — protecting the Blue® membrane from fouling and extending its service life. The Blue® then delivers Log 10 bacterial reduction at the final stage. Best choice when source water quality is unknown or variable.
✓ BEST FOR
Single-machine installs · Hotels · Dental offices · Small clinics · Any standard ice machine with a water supply line
Option 3 — High Volume
AquaGuard Pro®
High-capacity Log 10 system — click-connect replacement
0.08 µm
Log 10
9,000 gal
9,000-gallon capacity, 2.4× longer life than the Inline Blue®. The click-connect system lets your team swap the filter in seconds without dismantling the unit. Built for facilities with multiple ice machines or 24/7 high-volume output.
✓ BEST FOR
Single-machine installs · Hotels · Dental offices · Small clinics · Any standard ice machine with a water supply line
MWT Ice Machines · Partner resource
Bring MWT to every ice machine conversation.
The MWT Ice Machine brochure - a ready-made resource your team can share with facilities to open the water-safety conversation.
•Frames why Legionella grows in ice machines during idle cycles, in plain language
•Matches the right filter to facility size - single machine to 24/7 multi-machine sites
•Backs it with MWT's independent certifications and the CMS QSO-17-30 control point
•Covers what to do in the first 24 hours of a confirmed case
EMERGENCY WATER SAFETY RESPONSE
Expert Support. Immediate Response.
Same-day dispatch
When Legionella is confirmed at a hotel or resort property, immediate corrective action is required. Health departments, insurance carriers, and corporate stakeholders expect implemented, documented control measures at the follow up inspection. Purchase orders and proposals are not sufficient to clear a public health notice or satisfy liability requirements.
Installed point of use filtration with FDA and ASTM documentation provides a clear, auditable corrective measure.
MWT systems are designed for same day dispatch and allow facility staff to complete installation in under 5 minutes per fixture. This ensures guest safety and regulatory compliance using medical grade technology without the need for a licensed plumber or system shutdown.
** Emergency dispatch limited to 100 units per facility; larger orders follow standard channels, subject to our Terms & Conditions.
Complete Your Coverage
Protect every water contact point -
not just the ice machine
LEGIONELLA PREVENTION & WATER FILTRATION FOR ICE MACHINES
1. Can Legionella bacteria grow in commercial ice machines?
Yes. Legionella bacteria can colonize parts of commercial ice machine water systems, particularly where water stagnates, temperatures support bacterial growth, or biofilm develops. Although freezing inhibits bacterial growth, it does not reliably eliminate Legionella from contaminated water.
Healthcare facilities, hotels, senior living communities, and commercial buildings should include ice machines in their water safety assessments. Mentor Water Technologies USA (MWT USA) provides advanced antibacterial inline filtration designed to reduce bacterial contamination in water supplied to compatible ice machines.
2. What is the best Legionella water filter for commercial ice machines?
The best Legionella water filter for commercial ice machines should provide independently verified bacterial retention, reliable water flow, compatibility with the equipment, and appropriate filtration capacity.
Mentor Water Technologies USA offers Inline PureFlow® BLUE, featuring 0.08 µm ultrafiltration and independently tested Log 10 (99.99999999%) bacterial reduction under ASTM F838-20. For water supplies containing sediment, the Inline PureFlow® RED pre-filter can be installed upstream of BLUE to help reduce particulate loading and premature clogging. AquaGuard Pro® provides an additional option for higher-capacity applications.
3. How can hospitals and hotels reduce Legionella contamination in ice machines?
Hospitals and hotels can reduce Legionella contamination risks by maintaining ice machines, cleaning and sanitizing equipment according to manufacturer instructions, preventing water stagnation, monitoring water quality, and incorporating ice machines into their Water Management Programs.
Installing an independently tested antibacterial inline water filter upstream of compatible equipment provides an additional physical barrier against waterborne bacteria entering the machine. MWT USA's Inline PureFlow® BLUE uses 0.08 µm ultrafiltration with laboratory-validated Log 10 bacterial reduction, supporting water safety measures in healthcare and hospitality environments.
4. What is the difference between an antibacterial ice machine water filter and a sediment or carbon filter?
An antibacterial water filter is designed and tested to retain microorganisms, while sediment filters primarily remove suspended particles and carbon filters are generally used to reduce chlorine, taste, odor, and certain chemical contaminants.
MWT USA's Inline PureFlow® BLUE uses 0.08 µm ultrafiltration with independently tested Log 10 bacterial reduction under ASTM F838-20. Inline PureFlow® RED is a sediment pre-filter designed to reduce particulate loading and help protect downstream filtration. Combining RED and BLUE can support filtration performance where incoming water contains elevated sediment levels.
5. How much does Legionella filtration for commercial ice machines cost?
The cost of Legionella filtration for commercial ice machines depends on water quality, filtration capacity, equipment compatibility, installation requirements, and replacement frequency.
Mentor Water Technologies USA offers competitively priced antibacterial inline filtration solutions for healthcare, hospitality, senior living, and commercial applications. Inline PureFlow® BLUE provides up to 3,700 gallons of filtration capacity under specified operating conditions, while AquaGuard Pro® offers higher-capacity filtration of up to 9,000 gallons. Selecting an appropriately sized system and using sediment pre-filtration where needed can help manage maintenance requirements and total operating costs.