USWF Water Treatment

This collection is mainly a parts catalog of US Water Filters replacement UV lamps and quartz sleeves for Viqua systems, plus USWF's own water treatment products. Each USWF lamp and sleeve is cross-referenced to a specific Viqua model series, so they aren't universal across UV systems.

Finding your replacement lamp or sleeve

Start with the model number on your Viqua system's label or on your current lamp, such as the S1Q, S2Q, S5Q, S8Q, or S12Q. The number roughly reflects the system's flow capacity, and each series takes its own lamp and sleeve size. Find the USWF part listed for your exact series rather than assuming one will fit.

A UV lamp loses disinfecting strength even while it still glows, so replace it every 12 months. Clean the quartz sleeve at each lamp change, and replace it if it's scratched, cracked, or permanently clouded.

USWF's own products

4C-series whole-house UV systems rated for 10–15 GPM.
Water softener resin for refilling softener tanks. See USWF Water Treatment Resin.
Gravity filter systems for countertop drinking water without plumbing.

Shopping for genuine Viqua systems and parts instead? See Viqua UV Disinfection Systems.

Not sure which part matches your system? Call 1-800-277-3458 with your Viqua model number handy.