Center Enamel’s 500,000-Gallon AWWA D103-09 Drinking Water Tanks: The Ideal Solution for Cold Water Storage

Center Enamel’s 500,000-Gallon AWWA D103-09 Drinking Water Tanks: The Ideal Solution for Cold Water Storage

Water is a fundamental necessity for human survival and industrial progress. As global demand for clean and safe drinking water grows, so does the need for innovative, reliable, and standards-compliant water storage solutions. One such solution is the 500,000-gallon AWWA D103-09 Glass-Fused-to-Steel (GFS) drinking water tank, manufactured by Shijiazhuang Zhengzhong Technology Co., Ltd (Center Enamel).

With more than 30 years of experience, Center Enamel is the first and most experienced manufacturer of GFS tanks in China, and a global leader in bolted tank technology. The company’s tanks are widely used for cold water storage, particularly in municipal, industrial, and rural water supply systems across more than 100 countries.

This article presents a comprehensive overview of Center Enamel’s 500,000-gallon drinking water storage tank, designed in full compliance with AWWA D103-09, specifically for cold water applications, showcasing its superior performance, safety, and sustainability.

As a leading storage tanks manufacturer worldwide. Center Enamel can provide Glass-Fused-to-Steel (GFS) tanks, fusion bonded epoxy tanks, stainless steel tanks, galvanized steel tanks and aluminum geodesic dome roofs, Wastewater and Biogas Project Equipments for global customers.

WasteWater Treatment Project Equipment Supply

Why Choose Center Enamel?

Center Enamel is more than just a tank supplier—we are a full-scope water storage solutions provider. With decades of research, innovation, and global service under our belt, we offer:

Top-tier engineering and design capabilities

Turnkey project solutions

High-standard certifications

Global supply chain and service support

Customizable and scalable tank solutions

From municipal drinking water projects to industrial water systems in extreme cold-weather regions, Center Enamel has demonstrated excellence through its superior tank design, industry compliance, and dedicated after-sales service.

2. Technical Overview of the 500,000-Gallon Tank

Nominal Capacity: 500,000 US gallons (1,893,000 liters)

Diameter: ~64 feet (19.5 meters)

Height: ~24 feet (7.3 meters) (varies based on design requirements)

Material: Glass-Fused-to-Steel (GFS), also known as enamel-coated steel

Design Standard: AWWA D103-09

Color Options: Blue, Green, White, or Custom RAL Colors

Design Life: Over 30 years

3. Compliance with AWWA D103-09: Assurance of Quality and Safety

The American Water Works Association (AWWA) standard D103-09 is the globally recognized benchmark for bolted steel tanks designed for potable water storage. Center Enamel’s 500,000-gallon drinking water tanks are manufactured and tested strictly in accordance with this standard to ensure:

Proper structural design and wall stress resistance

Safe water containment for human consumption

Resistance to corrosion, temperature change, and UV exposure

Easy maintenance and inspection procedures

In addition to AWWA D103-09, our tanks are also certified to NSF/ANSI 61 for potable water safety and ISO 9001:2015 for quality management.

4. Glass-Fused-to-Steel: Unmatched Durability and Corrosion Resistance

The core advantage of Center Enamel’s storage tanks lies in our advanced Glass-Fused-to-Steel (GFS) technology—a process where two materials become one at over 850°C, fusing a corrosion-resistant glass coating onto high-strength steel plates.

Benefits of GFS:

Exceptional corrosion resistance even in acidic or alkaline environments

Minimal maintenance costs and long service life

Non-reactive surface ideal for drinking water applications

Aesthetic appeal with customizable color options

Quick installation compared to concrete or welded tanks

This fusion process results in a hard, inert, glossy finish that ensures water purity and prevents bacterial growth or contamination—especially critical in cold storage conditions.

5. Designed for Cold Climates

Our 500,000-gallon drinking water tanks are specially designed to handle sub-zero temperatures and freezing climates. Key features for cold water storage include:

Anti-freeze structural design for internal support and thermal movement

Low-temperature-resistant sealing materials

Optional insulation panels or outer shell systems

Enhanced coating elasticity to withstand expansion and contraction cycles

Corrosion-resistant bolts and gaskets for secure sealing in icy environments

Whether installed in the mountainous regions of North America, the plateaus of Central Asia, or northern Europe, our tanks consistently perform in the most challenging cold-weather applications.

6. Easy Installation and Low Life-Cycle Cost

Center Enamel's bolted tank system is modular, allowing for quick on-site assembly with minimal equipment. Our factory-fabricated panels are pre-drilled, labeled, and coated—significantly reducing field construction time and labor costs.

Installation benefits:

No need for heavy welding equipment

Shorter project timeline (up to 50% faster than concrete tanks)

No curing time required

Expandable and relocatable

Our tanks also boast a low total life-cycle cost due to their long lifespan, minimal maintenance requirements, and low risk of structural failures or leaks.

7. Applications of the 500,000-Gallon Tank

Our 500,000-gallon AWWA D103-09 tanks are used in a wide range of cold water storage applications, including:

Municipal drinking water systems

Emergency water reserves

Industrial water cooling or process supply

Military base supply tanks

Water utility backup storage

Rural water supply networks

Hydropower station auxiliary water

Because of their scalable and modular nature, these tanks can also be customized for larger-capacity systems or configured in tandem for redundancy and reliability.

8. Sustainability and Environmental Commitment

In line with our corporate responsibility, Center Enamel embraces green manufacturing practices. Our tank materials are:

Recyclable and non-toxic

Energy-efficient to produce

Lightweight for reduced transportation emissions

We contribute to sustainable water infrastructure by extending the life of systems, minimizing environmental impact, and supporting water conservation efforts worldwide.

9. Support and Service You Can Trust

We don’t just deliver tanks—we deliver peace of mind. Our dedicated global service teams offer:

Technical consultation and 3D modeling

On-site training and supervision

Maintenance manuals and checklists

24/7 customer support hotline

Spare parts supply and logistics

Our support system ensures your tank system operates at peak performance throughout its entire lifespan.

Invest in Reliability, Safety, and Performance

The Center Enamel 500,000-gallon AWWA D103-09 drinking water storage tank is a world-class solution for any organization or municipality seeking reliable, safe, and long-lasting cold water storage infrastructure. With over three decades of proven expertise, proprietary Glass-Fused-to-Steel technology, and global certifications, we are confident in offering a solution that surpasses expectations.

As cold climates continue to challenge infrastructure across the globe, choosing the right water storage solution has never been more important. Trust Center Enamel for your next project, and invest in a future of safe, sustainable, and scalable water storage.