WSP Whole House Iron & Sulfur Filter - All-In-One, Katalox, Control Flow

If your water leaves orange-brown stains on fixtures and laundry, or your hot water smells like rotten eggs, you’re dealing with iron and sulfur in your supply. The WSP Whole House Iron & Sulfur Filter reduces these issues for cleaner water throughout your home.

The Problem

Orange-brown rings on your toilet tank, rusty stains on sinks and tubs, and a persistent rotten-egg smell when you run hot water are clear signs of iron and sulfur problems in your water. These issues don’t just look or smell bad—they can affect how your water feels and the way your clothes and dishes come out.

Why It’s Happening

Iron and sulfur naturally occur in many water sources, especially well water. Iron shows up as dissolved particles that turn rusty when exposed to air, causing that orange staining. Sulfur, often in the form of hydrogen sulfide gas, creates the rotten-egg odor when it escapes from your water, especially when heated.

A simple water test looking for iron and hydrogen sulfide concentrations can confirm if these are your problems. Many local labs or your plumber can perform such a test.

What It’s Costing You to Leave It

Leaving iron and sulfur untreated means you’ll keep scrubbing orange stains, wasting time and cleaners. The smell can linger in your water heater and pipes, affecting how your water tastes and smells when you shower or make coffee. Over time, iron deposits can build up in your water heater and plumbing, making them less efficient and possibly shortening their life. Appliances like dishwashers and washing machines may work harder, using more detergent and energy.

How This System Fixes It

This filter uses a process called air injection oxidation combined with a special filtering media named Katalox-Light®. The system injects air into your water to turn dissolved iron and sulfur into solid particles that the filter media then traps and removes. This method doesn’t rely on adding harsh chemicals like chlorine or potassium permanganate, making it simpler to operate and maintain.

What This System Can Handle

The WSP Whole House Iron & Sulfur Filter tackles iron and sulfur together, plus manganese and some other metals often found alongside them. Its 10-inch by 54-inch tank holds 1½ cubic feet of Katalox-Light® media, offering a strong capacity that suits most homes. It works efficiently for flow rates common in residential use, with demand-based regeneration that backwashes (cleans) the media only when needed. This helps keep water pressure steady and reduces the time and water used for maintenance. It can handle well water with moderate to high iron and sulfur levels, making it a good choice if you’ve struggled with simpler filters or separate systems.

What You Actually Get

With this system, you receive a black polyglass mineral tank covered by a lifetime warranty on the tank itself. The included control valve manages the filtration cycles using advanced Control Flow Technology but carries its own manufacturer warranty. A bypass valve comes standard, letting you isolate the filter for service while keeping water running to your home—a convenience often sold separately by others. You’ll also get 10 feet of discharge hose for the drain line, ready for your plumber’s installation.

Is This the Right Size for You?

This filter fits most single-family homes with typical water usage and moderate to high iron and sulfur levels. If your household is very large, or your water has extremely high contaminant levels, you might require a larger or custom-sized system. Conversely, for low iron or sulfur levels, a smaller, simpler filter might suffice. Our team will help confirm the right size once they understand your water conditions and usage.

Living With It

Maintenance mainly involves periodic backwashing triggered automatically by the system’s control valve. This process flushes out trapped particles to keep the media clean. You’ll need to ensure the drain line is clear and occasionally check the bypass valve for proper operation. While the system avoids recurring chemical additions, the control valve and electronics require normal care as detailed by the manufacturer. Your local plumber can handle any routine service or repairs using available parts.

What It Won’t Do

This filter reduces iron, sulfur, manganese, and some other metals, but it doesn’t soften water or remove hardness minerals like calcium and magnesium. If hard water scale is also a concern, you would need a separate water softener. It also doesn’t filter out bacteria, viruses, or sediment, so additional treatment may be necessary if those are issues.

Why Buy It From Us

Water Softener Plus offers this house-brand system with genuine, serviceable components backed by a lifetime warranty on the tank. We provide free U.S. shipping from Tampa and will help you with sizing and configuration to suit your specific water problem. We don’t do in-home installation or service, but our team is available to guide your plumber. Our approach is straightforward—no pressure, no hype—just reliable equipment and clear, honest advice. We also stand behind our products with a 90-day money-back guarantee.

Included with this system

• Lifetime warranty on the tank. The control valve and electronics carry the manufacturer's own warranty.
• Bypass valve included, so the system can be isolated for service while water keeps running to the house.
• 10 feet of discharge hose for the drain line.

Specifications

What this system handles

• Orange-brown iron staining
• Rotten-egg sulfur smell
• Rust rings in toilets and tubs
• Staining on laundry

The Next Step

Contact the WSP team to request your free quote and sizing. Please have your ZIP code and a description of your water problem ready. We’ll confirm the right configuration for your home and send pricing details promptly.