Why Prefiltration Matters: Your First Line of Defense for Clean, Safe Water at Home

When we think of clean water at home, we usually picture the end result: clear, fresh water flowing from the tap. However, reaching that level of purity is the result of an entire treatment process—starting with the essential step of prefiltration.

Prefiltration: The Foundation of Every Home Water Filtration System

At BWT, we design water treatment systems with multiple filtration stages, each responsible for a specific function. Prefiltration is the first and most fundamental step. This stage removes large particles like sand, rust, and sediment that can enter your household plumbing through public pipelines or private water sources.

By eliminating coarse contaminants early, prefiltration helps the finer filters downstream perform more effectively, while also protecting appliances and plumbing from premature damage or corrosion.

Key benefits of prefiltration:

• Shields your household plumbing and water-using appliances
• Increases the efficiency and lifespan of downstream filter
• Prevents sediment buildup and corrosion
• Enhances overall hygiene and water quality

BWT’s Trusted Prefiltration Solutions

According to current technical standards, installing a prefilter in any domestic water system is mandatory. However, in reality, many filters are not cleaned or replaced regularly—mainly due to complicated maintenance procedures. This can severely affect the hygiene of the plumbing system and water quality.

That’s why BWT has developed a range of reliable and user-friendly prefiltration products that make clean water not only possible—but sustainable. Here are three of our most trusted solutions:

💧 BWT E1 Single-Lever Filter

Effortless maintenance in a modern, compact design

Designed for users who value simplicity and safety, the BWT E1 lets you change the filter cartridge at home in just 30 seconds—without tools, without touching water-affected parts, and without any splashing.

Thanks to its unique lever mechanism, maintenance is no longer a hassle. This convenience encourages regular filter changes, ensuring optimal hygiene and long-term protection for your water system.

Key features:

• Fine mesh filtration (90–100 µm)
• Hygienic cartridge replacement in under 30 seconds
• Built-in shut-off valve with a single-lever mechanism
• Complies with HACCP food-grade safety standards

🔧 BWT Protector Manual Backwash Filter

Robust, reliable, and easy to maintain

The BWT Protector efficiently removes coarse particles above 90 microns before they enter your household plumbing and fixtures. Its manual backwash function allows you to clean the filter element regularly—without the need to remove or replace parts.
Crafted from high-grade industrial materials, the Protector offers consistent filtration performance, long service life, and minimal maintenance effort.

Key features:

• Manual backwash filter
• Built to withstand high pressure
• High efficiency particle pre-filtration
• Made of materials used in high-tech industries

⚙️ BWT Infinity A/AP Automatic Backwash Filter

Smart automation and high-capacity performance

Representing the next generation of prefiltration, BWT’s Infinity A/AP models utilize automatic backwashing technology. These systems clean themselves without interrupting water flow, ensuring uninterrupted performance and maximum hygiene.

Advanced versions are equipped with pressure sensors, LCD screens, and remote-control capability—perfect for larger households or tech-forward homes.

Key advantages:

•  Automatic backwash filter
• High-strength, corrosion-resistant construction
• Space-saving, compact design
• Digital controls and monitoring (on select models)

Build a Strong Foundation for Cleaner Water

A reliable pre-filtration system is the first step toward clean and safe water for your home. With BWT’s E1, Protector, and Infinity product lines, you have effective, flexible, and easy-to-maintain solutions in hand – laying a solid foundation for a comprehensive water filtration system.

Let BWT take care of your water from the source – so every drop in your home is clean and safe!