iSpring Chloramine & Heavy Metals Whole House Water Filter System

The iSpring WGB32B-KSNC is a whole-house water filtration system designed to treat municipal and well water before it reaches your sinks, showers, and appliances. By targeting widespread tap contaminants like chloramine, heavy metals, and particulate matter, it provides cleaner water across every fixture in your home without requiring separate point-of-use units at every faucet.

Filtration happens in three dedicated stages. Incoming water first passes through a 10-inch polypropylene sediment filter to catch physical dirt and debris. It then enters an FG25B-KS cartridge combining KDF media and granular activated carbon (GAC), which reduces lead, mercury, hydrogen sulfide, pesticides, and radon. The final stage uses an FC25B-NC catalytic carbon block tested by SGS to NSF/ANSI 42 standards, proven to remove up to 94.4% of chloramine while cutting chlorine, volatile organic compounds (VOCs), and unpleasant odors.

Plumbing integration is designed around standard residential needs, featuring 1-inch NPT connection ports and standard 20-inch by 4.5-inch filter housings. The unit delivers a robust flow rate of up to 15 gallons per minute (GPM), preventing noticeable water pressure drops during simultaneous household use. The cartridges provide a service life of up to 100,000 gallons or roughly 12 months depending on water usage and source quality, keeping ongoing maintenance low.

Keep in mind that this setup is not engineered to reduce total dissolved solids (TDS), as it intentionally retains dissolved minerals in your water. If your goal is zero-TDS drinking water, the system must be paired with a separate reverse osmosis unit. DIY setup is supported by included manuals and video guides, backed by a 1-year limited warranty and U.S.-based technical assistance.

Verdict: The iSpring WGB32B-KSNC is an excellent choice for homeowners looking to eliminate heavy metals, chlorine, and tough chloramines throughout the entire house. It offers high-volume throughput and comprehensive media filtration while leaving natural minerals intact.

• Model: WGB32B-KSNC
• Stages: 3-stage filtration
• Flow Rate: Up to 15 GPM
• Cartridge Dimensions: 20 inches x 4.5 inches (Stage 2/3), 10-inch sediment (Stage 1)
• Inlet/Outlet Connection: 1-inch NPT
• Filter Capacity: Up to 100,000 gallons (or 12 months)
• Warranty: 1-year limited warranty

A great fit if you:

• Rely on municipal water treated with chloramines and want whole-home reduction up to 94.4%.
• Need to lower lead, mercury, hydrogen sulfide, or radon levels across all taps.
• Require strong water throughput up to 15 GPM to run multiple fixtures at once.
• Want low-maintenance filtration that lasts up to 100,000 gallons per cartridge set.

Consider something else if you:

• Need to reduce total dissolved solids (TDS) without adding a separate reverse osmosis system.
• Have extremely tight installation space that cannot fit a three-stage 20-inch housing setup.

Does this system lower TDS levels in tap water?
No, it is designed to retain beneficial minerals and does not reduce total dissolved solids. To lower TDS, it should be paired with an iSpring Reverse Osmosis system.

How often do the filter cartridges need to be replaced?
The system delivers reliable filtration for up to 100,000 gallons or roughly 12 months, depending on your household water quality and usage.

What plumbing connections does the system use?
It features standard 1-inch NPT connections and utilizes standard 20-inch by 4.5-inch filter cartridges.

What testing standard applies to the chloramine filter?
The catalytic carbon filter has been tested by SGS according to NSF/ANSI 42 standards, showing chloramine removal of up to 94.4%.