VIQUA VH200 UV Water System

What this system actually does — and what it does not

The VIQUA VH200 is a whole-home ultraviolet disinfection system. Its job is biological: it inactivates living microorganisms so they cannot reproduce and make you sick. It does not remove chemicals, heavy metals, sediment, or dissolved solids. That distinction matters because UV and filtration are complementary, not interchangeable — they solve different problems.

If your concern is chlorine, PFAS, fluoride, or hard-water scale, a filtration system handles that. If your concern is bacteria, cysts, and viruses that can pass right through a carbon filter, that is where UV earns its place.

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What it inactivates — by name

The VH200 is rated to inactivate:

• Cryptosporidium — a chlorine-resistant protozoan cyst that causes severe gastrointestinal illness; a known risk in surface-influenced and agricultural-area water supplies
• Giardia — another cyst that survives standard chlorination; particularly common in well water near livestock or wildlife
• E. coli — fecal coliform bacteria and the most-cited indicator of sewage or animal-waste contamination
• Fecal coliform (the broader category that includes E. coli)

The key word throughout is inactivation, not removal. UV light scrambles the DNA of a microorganism so it cannot replicate. The organism is still present in the water — it has simply been rendered harmless. This is why clear, particle-free water going into the UV chamber matters: turbidity and sediment can physically block UV light from reaching pathogens. Run filtration upstream.

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How UV disinfection works

Water flows through a compact stainless-steel chamber surrounding a UV lamp. As water passes the lamp, it is exposed to UV-C light at 254 nanometers — the germicidal wavelength used for water disinfection — at a specific dose. That dose — measured in millijoules per square centimeter — is what determines whether a microorganism’s DNA is disrupted beyond repair.

The VH200 uses a high-output lamp that delivers the necessary UV dose at a flow rate of 9 gallons per minute without requiring a long, bulky chamber. High output means the same disinfection performance in a smaller footprint — that is the engineering trade-off VIQUA made, and it is why this system installs neatly at a point-of-entry without dominating a utility room.

No chemicals are added. No taste or odor changes. No disinfection byproducts.

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Specifications

Spec	Value
Flow rate	9 GPM — sufficient for whole-home simultaneous use
Lamp wattage	35W
Chamber material	Stainless steel — stable across temperature, pressure, and pH variation
Safety features	Safety cap + lamp plug to prevent accidental UV exposure during maintenance
SKU	CP-UV
Price	$660

Replacement parts (genuine VIQUA)

Part	Part number
Controller	BA-ICE-CL
UV lamp	S200RL-HO / QL-200
Quartz sleeve	QS-001

Use genuine VIQUA parts. Off-brand lamps may not meet the UV output spec the system was designed around, which means the dose the water receives may be lower than intended.

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Maintenance: what it takes to keep this system effective

Annual lamp replacement — this is not optional

UV output from any lamp degrades over time. After roughly a year of continuous operation, the lamp’s output weakens enough that it may no longer deliver a reliable disinfection dose — even though the lamp itself is still glowing. A visually lit lamp is not a working lamp. Replace it on schedule regardless of appearance.

The process is straightforward: power down, swap the lamp, restart. The controller (BA-ICE-CL) monitors the system and will alert you when service is due.

Sleeve cleaning — as needed

The quartz sleeve surrounding the lamp must stay clear for UV light to pass through into the water. Mineral scale and biofilm can accumulate on the sleeve over time and reduce UV transmission. Wipe it clean during each lamp change at minimum; inspect more frequently if your water has high hardness.

Pre-filtration — the non-obvious maintenance lever

Turbid or sediment-laden water is the enemy of UV effectiveness. Any particulate that can shield a pathogen from direct UV exposure undermines the system. If you are on well water or surface-influenced supply, run a sediment pre-filter upstream of the VH200. Keep that pre-filter on its own replacement schedule.

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Installation: professional is the right call here

The VH200 installs at the point of entry — meaning it treats all water entering the home before it branches to any fixture. That location is ideal for whole-home protection, and it is also where your home’s main plumbing and electrical supply converge.

Professional installation is recommended. This system requires both plumbing connections (fitting the unit into your main supply line) and a dedicated electrical connection for the 35W lamp and controller. An improperly plumbed point-of-entry install can affect water pressure throughout the house. Get it done right once.

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Who this system is for

The VH200 is the right tool if any of the following describes your situation:

• Private well water — wells have no municipal disinfection backstop; bacteria and cysts from surface runoff, agricultural activity, or septic proximity are real risks
• Surface-influenced water — water sources that respond to rainfall or runoff events can carry transient microbial contamination
• Post-filtration microbiological layer — you already have whole-house or well filtration handling chemicals and sediment, and you want a dedicated biological barrier on top of it
• Immunocompromised household members — cryptosporidium and giardia are disproportionately dangerous for people with weakened immune systems; UV addresses both without chemical additives
• Boil-water advisory history — if your area has a track record of advisories, a UV system is exactly what those advisories are trying to substitute for

The filter-first rule

If you are pairing the VH200 with a whole-house filtration system, install filtration upstream of the UV unit. Filters remove the turbidity and particulate that would otherwise shade pathogens from the UV lamp. UV then handles what filters cannot: the living microorganisms that pass straight through mechanical and chemical filtration media.

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What you are covered by

• 30-day money-back guarantee — if it is not the right fit, return it
• Free shipping on orders over $99
• 1-year mechanical warranty — covers housings and hardware; filters and filter media are excluded.
• Lifetime support — questions on install, maintenance, or replacement parts are handled by the Mountain Pure Water team

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Sources & honesty note

All product specifications and inactivation targets in this page — flow rate (9 GPM), lamp wattage (35W), stainless-steel chamber, safety cap and lamp plug, the annual lamp replacement guidance, and the microorganism list (Cryptosporidium, Giardia, E. coli, Fecal Coliform) — are drawn directly from the VIQUA VH200 product listing and verified against Mountain Pure Water’s internal accuracy audit (2026-06-16). No log-reduction numbers or third-party certification claims have been stated here because none were present in the verified source data; we do not invent specs. Replacement part numbers (BA-ICE-CL, S200RL-HO/QL-200, QS-001) are quoted verbatim from the manufacturer listing.

UV disinfection mechanism described above (DNA disruption, inactivation vs. removal, turbidity effects on dose delivery) reflects well-established photobiology; no novel claims are made.