Advanced Reverse Osmosis Filtration for City Water & Chloramine Removal

The Luna Crescent - 5 Stage Under Sink Reverse Osmosis System is designed specifically to treat municipal city water, where disinfectants like chlorine and chloramine are commonly used to maintain water safety in distribution systems.

This advanced under sink RO water filter system combines catalytic carbon technology with precision reverse osmosis filtration to reduce chemical disinfectants, heavy metals, and dissolved contaminants, producing clean, great-tasting drinking water directly from your faucet.

With five carefully engineered filtration stages, the system delivers high-purity water for drinking, cooking, coffee, tea, and everyday hydration.

Stage 1 – Sediment Filter

Reduces

• rust
• sand
• sediment
• suspended particles

Stage 2 – Catalytic Carbon Filter

Reduces

• chloramine
• chlorine
• chemical taste and odor
• volatile organic compounds (VOCs)

Stage 3 – Carbon Block Filter

Reduces

• residual disinfectants
• pesticides and herbicides
• organic chemicals
• unwanted taste and odor

Stage 4 – Reverse Osmosis Membrane

The reverse osmosis membrane is the core purification stage of the system

Removes or reduces

• lead
• arsenic
• fluoride
• nitrates
• heavy metals
• dissolved salts
• many pharmaceutical and industrial contaminants

Membrane Size Options (50–200 GPD)

Reverse osmosis membranes are rated by GPD (gallons per day), indicating how much purified water the system can produce under optimal conditions.

50 GPD Reverse Osmosis Membrane * (default size option) *
Best for 1–2 people or light drinking water use.

75–100 GPD Reverse Osmosis Membrane
Ideal for average households (3–4 people) using filtered water for drinking and cooking.

150–200 GPD Reverse Osmosis Membrane
Recommended for larger families or higher water usage, providing faster tank refill and higher daily production.

Selecting the right membrane size ensures your under sink RO system keeps up with your household’s drinking water demand.

Stage 5 – Post Carbon Polishing Filter

The final filtration stage is a post-carbon polishing filter, which enhances the taste and freshness of the water before it reaches the faucet.

Tank Specifications

Model
RO-122

Total Tank Capacity
3.2 Gallons

Usable Water Storage Capacity
2.8 Gallons

Connection Size
1/4" NPT

Tank Dimensions
9" Diameter × 15" Height

Certification

This storage tank has been tested and certified by NSF International under ANSI/NSF Standard 58, meeting established requirements for material safety and structural integrity in reverse osmosis system components.