Complete Whole House System — Best
Sediment + GAC/KDF + CTO — the only tier that reduces lead, mercury, hydrogen sulfide, and heavy metals.
Our premium whole-house package, and the only tier that reduces lead, mercury, hydrogen sulfide, and heavy metals. A WGB32B-KS 20"×4.5" set — sediment, GAC/KDF, and CTO — with 1" ports, up to 15 GPM, and roughly 100,000 gallons of capacity. Includes spin-down prefilter and UV sterilization.
Features
What you get
- Sediment + GAC/KDF + CTO (WGB32B-KS), 20"×4.5"
- The ONLY tier that reduces lead, mercury, hydrogen sulfide, and heavy metals
- 1" ports, up to 15 GPM, ~100,000 gallons
- Also reduces chlorine, PFAS, and odors
- Spin-down sediment prefilter (WSP50ARB) + UV sterilization (UVF50 LED)
- Bypass valves and pressure gauges
System Specifications
Specs
- Filter set
- Sediment + GAC/KDF + CTO (WGB32B-KS)
- Housing
- 20" × 4.5"
- Ports
- 1"
- Flow rate
- Up to 15 GPM
- Capacity
- ~100,000 gallons
- Prefilter + UV
- Spin-down (WSP50ARB) + UVF50 LED (13.2 GPM)
- Reduces
- Lead, mercury, hydrogen sulfide, heavy metals, chlorine, PFAS
How It Works
Three stages
- 1
Sediment pre-filtration
Water enters through the spin-down sediment prefilter, removing sand, silt, and large particles before they reach the main filters.
- 2
GAC/KDF + CTO filtration
The GAC/KDF and CTO stages reduce lead, mercury, hydrogen sulfide, and heavy metals, along with chlorine, PFAS, and odors — contaminants the Good and Better tiers do not remove.
- 3
UV sterilization
UV sterilization eliminates 99.99% of bacteria and viruses before water reaches your taps.
What's Included
Everything you need for clean water
Filtration system
WGB32B-KS whole-house set — sediment + GAC/KDF + CTO, 20"×4.5", 1" ports
UV sterilizer
iSpring UVF50 LED ultraviolet sterilization system — mercury-free, no warm-up, and nothing to replace: no bulb, no quartz sleeve. The LED module is long-life, and its indicator light turns RED when it is no longer working properly, so you know without a service call. When it does fail you replace the unit, not a part. Needs a 120V outlet at the unit.
Spin-down prefilter
WSP50ARB reusable spin-down sediment prefilter
Bypass valves & gauges
Bypass valves and pressure gauges for easy maintenance
Professional installation
Installation by our certified local technicians
Free water test
Comprehensive in-home water quality test
Setup & calibration
Full system setup, pressure calibration, and flow testing
Replacement filters
First set of replacement filters included
Satisfaction guarantee
30-day satisfaction guarantee
Why This System?
Our most advanced whole-house system, and the only tier that reduces lead, mercury, hydrogen sulfide, and heavy metals — thanks to its GAC/KDF media — on top of chlorine, PFAS, and odors. In a 20"×4.5" format with 1" ports and up to 15 GPM, it also delivers the highest flow and longest capacity we offer (~100,000 gallons). If you want the highest level of protection, this is it.
Every system includes a 30-day satisfaction guarantee and is eligible for our BWS Care plans — scheduled filter changes, UV lamp replacement, and full system inspections.
Comparing options? See all Whole-House Filtration tiers side by side.
Compare Whole-House FiltrationMaintenance
How Often Should I Replace My Filters?
We recommend a visual inspection every 6 months and a full filter replacement every 12 months. Local water is hard on filters, so keeping to this schedule holds the system at full performance and protects everything downstream. UV bulbs also lose intensity over time and should be replaced once a year. With a Whole House Care Plan we track when yours are due, bring the right iSpring set, and install it on schedule. The annual filter set, UV bulb, and two service visits per year are all included, so there is no border run to source parts and no guessing when they are due.
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