Drinking Water Filtration > Single Stage Single stage filtration systems use a single carbon filter to reduce impurities and improve water quality. Our single stage systems work with a variety of filter types, so whether you're concerned about unhealthy elements in your drinking water or simply want to improve its taste and odor, you can select the filter that fits your needs.   Featuring the new Twist-and-Lock Design. Remove and install filters in seconds — a simple quarter-turn twist and you're done. No tools necessary! Learn More   Filters last up to 6 months.

Filter Included Faucet Type & Color Installation Kit Available From Models: GX1S50F* Performance (US) GQ1S50F* Performance (Canada) GXRLQR see replacement filters Long-reach Black-on-Chrome Tubing and fittings included Home Depot For building contractors: Model GX1S01C sump Includes sump (filter housing) only; filter, faucet, and fittings sold separately see replacement filters Available from Home Depot

* Not for sale in the state of California

Certified by NSF, the most highly recognized independent testing institution in the water treatment industry. NSF inspects, tests, and certifies our product performance.