Product Price Filter Capacity (gallons) Flow Rate (GPM (Gallons Per Minute)) Contaminant Removal Installation Dimensions (inches (L x W x H)) Warranty
Berkey Big Berkey Gravity Filter System 2.25 Gallon
US
£274.18 2.25 gallons 4 gal/hr with 2 elements; 7 gal/hr with 4 elements Removes bacteria, viruses, heavy metals, VOCs, chlorine, pesticides, herbicides, PFAS/PFOA, pharmaceuticals (via Black Berkey elements) 19 in height x 8.5 in diameter Lifetime limited warranty (varies by seller)

A stainless-steel, countertop gravity-fed water purifier that holds 2.25 gallons and ships with two Black Berkey purification elements; flow can be increased by adding up to two more elements. It removes a wide range of biological and chemical contaminants without electricity or plumbing, making it portable and low-maintenance.

★ Ideal for

Ideal for quiet countertop water filtration because it is gravity-fed (no pump or motor) and produces 4 gal/hr with two elements while remaining silent.

Clearly Filtered Clearly Filtered Countertop Pitcher with Affinity Filtration Technology
US
£67.24 100 gallons 2.27 GPH 365+ contaminants including PFAS fluoride lead arsenic microplastics VOCs 11.4 x 5.25 x 10.87 in Limited lifetime warranty

A 10-cup (80oz) gravity-feed pitcher using Affinity Filtration Technology to reduce 365+ contaminants including PFAS, fluoride, lead and arsenic. It features a 100-gallon filter life, slow steady flow for greater contact time, and requires no installation, making it portable and easy to use.

★ Ideal for

Suitable for quiet countertop filter needs because it is a gravity-fill pitcher with a measured flow rate of 2.27 GPH, producing no mechanical noise during operation.

ISpring ISPRING RCD100SPKHC Countertop Reverse Osmosis Sparkling Water Maker
US
£488.96 12 months (FPCM100) PFAS,TDS and general RO contaminant removal (multilayer RO)

Countertop reverse osmosis sparkling water maker with built-in UV, real-time TDS monitor, hot/cold and instant sparkling functions; accepts standard screw-in CO2 cylinders and uses a 12-month all-in-one replacement filter. Suits users who want filtered sparkling water and contamination reduction (including PFAS) with countertop installation.

★ Ideal for

Suitable for the quietest countertop water filter systems list because it is a countertop RO unit with a built-in UV and a 12-month all-in-one filter (FPCM100), providing high contaminant reduction without plumbing modifications.

Waterdrop Waterdrop Countertop Reverse Osmosis WD-N1-W
US
£223.38 CF filter up to 6 months; MRO membrane up to 18 months 75 GPD Removes chlorine, arsenic, antimony, PFAS, bacteria and viruses (0.0001 micron RO membrane + carbon block + UV sterilization) 17.1 x 7.0 x 17.8 in 1 year

The Waterdrop N1 (WD-N1-W) is a 4-stage countertop RO dispenser with a 0.0001-micron membrane, activated carbon block, and hourly UV sterilization offering high contaminant removal and a 3:1 pure-to-waste ratio. It's plug-and-play countertop installation with a smart display and electric pump, producing up to 75 gallons per day and long-life filters.

★ Ideal for

Ideal for quiet countertop filtration because its integrated electric pump and enclosed countertop design produce filtered water at 75 GPD with a 3:1 efficiency while avoiding under-sink installation noise and plumbing connections.

Waterdrop Waterdrop WD-A2 Countertop Reverse Osmosis System
US
£298.83 12 months 100 GPD TDS,PFOA,PFOS,Chlorine,Fluoride,Arsenic,Lead,Nitrate,Chromium-VI,Copper,Sediment,Salt 15.9 in x 8.2 in x 15.7 in 12 month manufacturer warranty

The Waterdrop WD-A2 is a countertop reverse osmosis hot-and-cold dispenser with a 0.0001 μm RO membrane, 5-stage filtration, and a portable pure water tank. It offers smart touch controls, temperature and volume presets, and a compact plug-and-play countertop installation suited for homes and offices wanting purified hot and cold water without plumbing.

★ Ideal for

Ideal for the quietest countertop water filter systems search because it is a plug-and-play countertop RO with a 100 GPD flow rate, 159 oz tank, and no continuous pump or plumbing noise source.