Kind Water WS-6000UV
Whole House Filter + Salt-Free Conditioner + UV · Well Water
4-component system: sediment pre-filter + KDF/carbon + TAC conditioning + UV sterilization
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The WS-6000UV is the right system for well water households that need both hardness control and bacterial disinfection in one unit. The TAC conditioning stage handles scale prevention without salt or brine; the UV stage handles bacteria, viruses, and protozoa without chemicals. The iron limit applies here too — above 0.3 PPM ferrous iron, dedicated iron removal is required upstream. At $3,222 with a 17% discount from retail, it replaces what would otherwise be two separate system purchases.
What the UV stage adds over the standard WS-6000
The WS-6000UV adds a 254nm UV lamp and chamber installed after the filtration and conditioning tanks. Water must be clear before it reaches the UV stage — the upstream sediment and carbon filtration ensures this. UV light penetrates microbial cell walls and disrupts DNA, neutralizing organisms so they cannot reproduce or infect.
UV eliminates
- E. coli and coliform bacteria
- Giardia and Cryptosporidium
- Viruses (norovirus, rotavirus)
- Legionella
- 99.99% of waterborne pathogens
UV does not remove
- Iron or manganese
- Hardness minerals (TAC handles this)
- Chemical contaminants
- Sediment or turbidity
- Dead organisms (they stay in water)
UV maintenance: The UV lamp must be replaced annually regardless of whether it appears to be working — UV output degrades before visible light output fails. Lamp replacement cost: $50–80/year. The quartz sleeve should be inspected annually and replaced every 2–3 years.
Who needs the UV upgrade
Get the WS-6000UV if:
- Your well has ever tested positive for coliform or E. coli
- Your well is shallow (under 100 feet) — more susceptible to surface contamination
- Your property is near agricultural land, livestock, or septic systems
- You're in an area with high rainfall that could carry surface runoff into the aquifer
- You have infants, elderly, or immunocompromised household members
- You haven't tested your well in over a year and want the protection regardless
Standard WS-6000 is sufficient if:
- Your well consistently tests clean on bacteria and coliform
- Your well is deep (200+ feet) in a protected aquifer
- Hardness and scale prevention is your only concern
- You want to minimize ongoing maintenance (no annual lamp replacement)
Complete system — all four components
Sediment pre-filter
5-micron cartridge, removes sand, silt, rust. Replace every 3–6 months. Protects all downstream components.
KDF + activated carbon filter tank
Removes hydrogen sulfide (low concentrations), heavy metals, VOCs, trace organics. Rated 1 million gallons. Also ensures clear water before the UV stage.
TAC salt-free conditioning tank
Converts hardness minerals into scale-resistant crystals. No salt, no brine, no electricity, no regeneration. Iron tolerance: 0.3 PPM maximum. Rated 1 million gallons.
UV sterilization chamber (WS-6000UV only)
254nm UV lamp, 99.99% pathogen elimination. Requires annual lamp replacement. Needs standard electrical outlet. Clear water from upstream stages ensures full UV effectiveness.
Specifications
| Model | WS-6000UV |
| Price (May 2026) | $3,222.33 (17% off retail $3,882) |
| UV wavelength | 254nm |
| Pathogen elimination | 99.99% bacteria, viruses, Giardia, Cryptosporidium |
| Conditioning technology | TAC (Template Assisted Crystallization) |
| Iron tolerance | 0.3 PPM ferrous iron maximum |
| Media lifespan | 1 million gallons (~10 years) |
| UV lamp replacement | Annual, ~$50–80 |
| Salt / brine | None |
| Electricity | Required for UV lamp only |
| Warranty | Lifetime on tanks, 1 year on parts |
Questions
Yes. The UV lamp delivers 254nm ultraviolet light that neutralizes 99.99% of bacteria, viruses, Giardia, and Cryptosporidium. It does not remove organisms from the water — it renders them unable to reproduce or cause infection. For well water with confirmed bacterial contamination, UV disinfection is the most effective chemical-free treatment available.
If your well has bacterial concerns — past positive tests, shallow depth, proximity to livestock or septic — yes. A standalone UV system costs $200–600 installed, plus the labor to integrate it with your existing system. The WS-6000UV bundles UV into a pre-designed, pre-plumbed package where the upstream filtration stages are already optimized to deliver clear water to the UV chamber. If bacterial risk is not a concern, save the $879 and get the standard WS-6000.
No. The TAC conditioning media tolerates up to 0.3 PPM ferrous iron without fouling, but does not remove it. Iron above 0.3 PPM requires dedicated iron removal upstream — an air injection or peroxide injection system. See our iron filter guide. Iron particles in the water also reduce UV effectiveness by blocking UV light, which is another reason pre-treatment is essential before this system.
Annually. UV lamps degrade over time — UV output drops significantly after 9,000–12,000 hours of operation even when the lamp still appears to glow. Replace once per year regardless of visible condition. Lamp cost is typically $50–80. The quartz sleeve that protects the lamp should be inspected annually and replaced every 2–3 years.
Verdict
The WS-6000UV is the most complete salt-free well water treatment system available in one package. For households that need scale prevention and bacterial disinfection without salt, brine discharge, or chemical treatment, it delivers both in a pre-integrated system. Test your iron before ordering — that is the one constraint that determines whether this system is right for your well.
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Don't need UV? The standard WS-6000 is $879 less.
Same filtration and TAC conditioning, no UV lamp maintenance. Right choice if your well tests clean on bacteria.
WS-6000 — $2,343 at Kind Water →Related pages
- Kind Water WS-6000 review — standard model without UV
- Well water UV systems — how UV disinfection works
- Coliform in well water — treatment guide
- Salt-free water softener for well water — how TAC works
- Iron filters for well water — required if iron above 0.3 PPM
- Tap Score well water testing — test before you buy