Sterling Water Treatment CRS-3 Drinking Walter Filtration System - CRS-3

  • SKU #: STWCRS3
  • UPC #: 813310020381
  • MPN #: CRS-3
MSRP: $355.00
$259.94
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Sterling CRS‑3 3‑Stage Drinking Water System — Ultrafiltration With Filter Faucet

Sterling Water Treatment’s CRS‑3 system offers high-performance ultrafiltration without reverse osmosis waste. Designed for simplicity and sustainability, it delivers safer, better-tasting water directly to your tap.


  • Brand: Sterling Water Treatment
  • Model (MPN): CRS‑3
  • Filtration Stages: 3—Sediment, Carbon Block, 0.03 µm UF Membrane
  • Membrane Pore Size: 0.03 microns (ultra-filtration)
  • Membrane Production (Initial): ~5,000 gal (at 65 PSI, 77 °F)
  • Operating Pressure: 40–100 PSI
  • Water Temperature: 40–100 °F 
  • TDS Limit: ≤ 2,000 ppm
  • Chlorine Tolerance: ≤ 200 mg/L 
  • pH Range: 4–11 Turbidity: ≤ 300 NTU
  • Faucet: Included (long‑reach chrome)
  • Waste: No wastewater; UF retains impurities
  • Warranty: 1-year limited factory warranty

Ultrafiltration with 0.03 µm Hollow Fiber Membrane

Captures bacteria, viruses, and ultrafine particles down to 0.03 µm—far more than carbon or sediment alone.

No Wastewater Production

Unlike RO systems, the UF process does not produce wastewater, improving efficiency and sustainability.

Three-Stage Filtration for Taste & Safety

Sediment and carbon block filters remove debris and chlorine; the UF membrane ensures microbial safety for fresh-tasting water.

Compact, Faucet-Included Installation

Ideal for under-sink use with included long-reach chrome faucet—no extra accessories needed.

Built to Withstand Typical Tap Conditions

Performance rated through 5,000 gallons; handles moderate hardness and chlorine levels with robust operating range.


Additional Features:

  • No tools required: quick-change filters
  • Leak-stop valve standard
  • Durable aluminum bracket and quick-connect fittings
  • NSF-type performance without certification
  • Manual includes detailed install/maintenance guide
  • Ideal for city or well water (microbiologically safe)
  • 1
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  • 12 Months
  • Membrane
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  • Point of Use
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