Critical Water Storage Tanks for ANSI/AAMI ST108
Your critical water can get worse after it’s made.
If water sits, picks up contamination, or won’t fully drain, you can lose control fast.
Talk to an ST108 Water Expert
ST108 storage tanks are built to keep critical water clean, drainable, and easy to disinfect.
What is a Critical Water Storage Tank?
A critical water storage tank holds high-purity water after treatment so it’s ready when your department needs it. The goal is simple: store water without letting contamination or bacteria build up.
How ST108 Defines and Supports Proper Storage Tank Design
ST108 Requirements for Storage Tanks
ST108 gives clear direction for tank design. When storage tanks are used, they must drain completely, remain sealed, stay filtered, and be easy to clean. Proper design helps limit contamination and supports consistent water quality.
How Our Tanks Support ST108
Our tank design minimizes bacteria growth with a cone-bottom for full drainage, internal spray-down, gasket-sealed lids, and 0.2 µm vent filtration. Each feature supports clean, compliant, and reliable tank operation.
Key Features of a Compliant Tank
Our tanks use low-extractable poly materials and include high/low/full level controls, dual check valves, loop drains, sample ports, flow meters, gauges, and thermometers—everything needed for safe, compliant performance.
Where Storage Tanks Fit in the System
Storage is typically placed after purification and before distribution: Pretreatment → RO/EDI → Storage Tank → Loop → Point of Use. The tank stabilizes supply and supports ongoing control of water quality.
Our ST108 Approach
How it Works
Review Your System Layout and Water Demand
We assess how your system is built and how much water you use so the tank design supports stable flow, proper turnover, and ST108 expectations.
Recommend the Right Tank Features
We guide you on the features ST108 systems need, including a drainable cone or bowl base, a 0.2 µm vent filter, and effective disinfection methods to help limit contamination.
Size the Tank Correctly
We ensure your storage tank is sized for your flow rate, demand, and loop design, helping maintain consistent water quality throughout the system.
Support Testing and Monitoring Planning
We help define the sampling points, monitoring frequency, and documentation needed so your tank and distribution loop stay compliant over time.
NSF Certified Chemicals
Our formulations meet NSF safety standards to protect your people and your equipment.
50+ Years of Expertise
Backed by decades of industry experience and a proven track record of results.
Regional Expertise
Serving facilities across the midwest with responsive, local water treatment support.
Optimize Your ST108 Storage Tank Setup
Our Services
Closed Loop Water Treatment
Closed loops feed your heat exchangers too. Explore our Closed Loop Water Treatment and Glycol Solutions to stop corrosion before it reaches your boiler.
Cooling Tower Solutions
Your steam system isn’t the only one that needs protection. Keep your cooling water clean and balanced with our Cooling Tower Treatment Programs.
Filtration Solutions
For maximum reliability, combine your boiler program with Filtration Solutions to remove rust and debris before they enter your feedwater system