Ask about Outdoor Pump Water Filter
Product Overview
01A compact manual water filtration system designed for camping, hiking, travel, emergency preparedness, and outdoor freshwater use.
A portable hand-pump system that draws source water through a replaceable filter cartridge without electricity or batteries.
High-precision physical filtration is provided by the internal hollow fiber ultrafiltration membrane.
Actual filter life may vary according to source water quality, sediment level, maintenance, and frequency of use.
Operate the system with the integrated hand pump—no charging, batteries, electrical outlets, or plumbing installation required.
The included cup provides a convenient container for collecting filtered water during outdoor use.
A compact body designed to fit into backpacks, travel bags, preparedness kits, and outdoor equipment storage.
Lightweight enough for individual outdoor carrying while providing a complete pump-based filtration setup.
Select the clearest available freshwater source whenever possible to support better flow and longer filter life.
The outlet hose can be secured to the supplied clean-water cup with the included clip for controlled water collection.
The intake floater helps position the inlet away from heavy sediment at the bottom of the water source.
Suitable for outdoor recreation, preparedness kits, remote travel, and temporary freshwater filtration situations.
3-Stage Filtration System
02Manual Pumping, Multi-Layer Filtration
Each movement of the pump handle draws freshwater through the external pre-filter and internal composite cartridge. The filter materials work together to help reduce sediment, suspended particles, chlorine, unpleasant taste, and odor before water reaches the outlet hose.
PP Cotton Pre-Filtration
Helps intercept sediment, soil, rust particles, and other suspended material before water reaches the finer filtration layers.
Activated Carbon Fiber
Helps reduce chlorine, unpleasant taste, and odor to improve the overall drinking experience.
0.01 μm Hollow Fiber UF Membrane
Provides high-precision physical filtration through a compact hollow fiber ultrafiltration membrane.
Replacement Filters & Components
03Replace the Filtration Components, Not the Entire System
The internal filter cartridge and external pre-filter can be replaced separately. This allows continued use of the pump body, handle, hoses, connectors, floater, and clean-water cup.
The main cartridge combines PP cotton, activated carbon fiber, and a hollow fiber UF membrane. It installs inside the K8187 pump filter body and provides the system’s primary filtration performance.
The pre-filter attaches to the longer inlet hose and helps intercept larger debris and suspended material before source water enters the main filter cartridge.
Key Product Indicators
04Actual flow may vary depending on pump speed, source water quality, filter condition, hose position, and sediment level.
Actual filter life depends on source water quality, sediment level, maintenance, and frequency of use.
Repeated movement of the handle draws source water through the filtration system and directs filtered water through the outlet.
The internal cartridge combines PP cotton, activated carbon fiber, and hollow fiber ultrafiltration materials.
The intake pre-filter helps reduce larger debris before water enters the primary filter cartridge.
Designed for situations where electrical power, charging, and fixed water connections are unavailable.
The longer hose draws untreated water into the system, while the shorter hose directs filtered water into a clean container.
Store unused components in a clean, dry, cool, and ventilated place away from direct sunlight and corrosive substances.
Care & Use Notes
05Avoid heavily muddy water whenever another source is available. High sediment levels may reduce flow and shorten filter life.
Do not allow the outlet hose, clean-water cup, or water outlet to contact untreated water or dirty surfaces.
Do not clean the cartridge with soap, bleach, solvents, chemical cleaners, or abrasive materials.
Carbonated, acidic, sugary, flavored, or alcoholic liquids may damage the filtration materials and affect performance.
If the handle becomes stiff after storage, gently rotate it from side to side, pull upward, and pump several times.
Inspect and clean the external pre-filter when pumping becomes more difficult or water intake becomes noticeably slower.
After each use, drain the hoses, cup, pre-filter, pump body, and cartridge as thoroughly as possible.
Allow washable components to air-dry in a clean, ventilated area before packing the system away.
Avoid sharp impacts, freezing conditions, excessive heat, or handling that could damage the hollow fiber membrane.
Replace the cartridge at its rated capacity, or earlier when flow, taste, odor, or physical condition indicates replacement.
Check the hoses, connectors, seals, floater, clip, and pre-filter for looseness, wear, or damage before outdoor use.
The filter is not designed to make seawater or water affected by fuels, industrial chemicals, or hazardous contamination drinkable.
How to Set Up Your Countertop Gravity Water Filter System
Follow these simple steps to assemble the system, install the core filters, flush before first use, and prepare it for daily use.
Prepare and Clean the Parts
Before assembly, check the main parts and clean the system components.
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1
Wash Your Hands Handle the system with clean hands before setup.
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2
Check Included Parts Make sure the chambers, lid, spigot, stand, and core filters are ready.
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3
Clean Before Assembly Rinse the chambers and accessories before first use.
Assemble the Lid Knob
Attach the lid knob to the lid and secure it with the included hardware.
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1
Place the Lid Knob Insert the lid knob into the center hole of the lid.
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2
Add Washer and Gasket Place the washer and gasket in the correct position.
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3
Tighten the Screw Fasten the knob until it feels stable.
Install the Basic Spigot
Install the basic spigot into the lower chamber before stacking the system.
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1
Insert the Spigot Place the spigot through the lower chamber hole with the gasket and washer.
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2
Add the Inside Parts Place the remaining washer and gasket from the inside of the chamber.
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3
Tighten the Hex Nut Use the wrench to secure the spigot vertically.
Install the Core Filters
Use the required number of core filters for your system model.
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1
Insert the Core Filters Place the core filters through the holes in the upper chamber.
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Secure the Filters Use the filter washer and wing nut to hold each core filter in place.
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3
Check Stability Make sure each core filter is firmly installed before adding water.
Stack the Chambers and Stand
Set the system together in the correct order before flushing.
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Attach the Anti-slip Mat Place the anti-slip mat on the bottom of the lower chamber.
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2
Place the Lower Chamber on the Stand Set the lower chamber securely on the stand.
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3
Add the Upper Chamber and Lid Place the upper chamber into the lower chamber, then cover it with the lid.
Flush Before First Use
Flush the system before drinking water from it for the first time.
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Fill the Upper Chamber Add water and let it move through the core filters.
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Discard the First Batch Pour out the first filtered water from the lower chamber.
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Repeat 2–3 Times After flushing, the system is ready for regular use.
How the Filter System Works
Water is added to the upper chamber and moves through the center filter by gravity. After filtration, water collects in the lower chamber and is ready to dispense from the spigot.
Add water to the top chamber. The system works without electricity, plumbing, or pressure.
Water naturally flows downward through the center filter element, where the filtration process takes place.
After passing through the filter, water collects in the lower chamber for storage and daily use.
Open the spigot to pour filtered water for drinking, cooking, or everyday hydration.
Filter Replacement Guide
Replacing filters on time helps your filtration system keep working properly. It also helps maintain water flow, drinking water taste, and everyday use confidence.
Filter life may vary by water quality, usage frequency, and total water volume filtered.
Replace the filters when they reach the rated lifespan listed for your filter model.
If filtering takes much longer than usual, clean or replace the filters as needed.
If unwanted taste or smell becomes noticeable again, it may be time to replace the filters.
Rain, river, stream, or well water may shorten filter life compared with regular tap water.
Choose filters that match your filtration system, filter series, and setup.
Prime, rinse, or flush new filters according to the product instructions.
Make sure washers, seals, and threaded parts are installed correctly.
Empty and clean the upper and lower chambers before installing new filters.
If your system uses paired filters, replace matching filters together when needed.
Write down the replacement date and set a reminder based on your usage.
Use this checklist to choose the right replacement filter for your Purewell system and check whether it may also fit select compatible systems from other brands.
| Filter Category | Filter Type | Fits Purewell Systems | Other Compatible Systems |
|---|---|---|---|
| K Series Carbon Filters (Pro) | Core Filter | SS Series and K Series filtration systems. | Select ProOne Big+ / Big II and Berkey BB9-2 style systems. |
| K Series Carbon Filters | Core Filter | SS Series and K Series filtration systems. | Select ProOne Big+ / Big II and Berkey BB9-2 style systems. |
| K Series Carbon Filters (Classic) | Core Filter | SS Series and K Series filtration systems. | Black Berkey Elements style systems and select Berkey gravity systems. |
| K Series Ceramic Filters | Core Filter | SS Series and K Series filtration systems. | Most gravity-fed systems from major brands, including Berkey, ProOne, Alexapure, Waterdrop, Doulton, Boroux, Culligan, and more. |
| SS Series Square Carbon Filters | Core Filter | SS Series and K Series filtration systems. | Select ProOne Big+ / Big II and Berkey BB9-2 style systems. |
| SF Series Multi-Functional Filter | Core Filter | SF Series filtration systems. | Select Zero pitchers and dispensers. |
| BO Series Unique Compound Filter | Core Filter | BO Series filtration systems only. | Not intended for K Series, SS Series, or other gravity filtration systems. |
| K Series Specialty Add-On Filters | Supplemental Filter | Use together with K Series or SS Series core filters. | Select Travel, Big, Royal, Imperial, Light, and Crown Berkey models as an additional filter option. |
System Package
Main parts included for the countertop gravity water filter system.
- Upper Chamber× 1
- Lower Chamber× 1
- Lid× 1
- Anti-slip Mat× 1
- Stand× 1
- User Manual× 1
Basic Spigot Parts
Parts used to install the basic stainless steel spigot.
- Basic Spigot× 1
- Spigot Gasket× 2
- Beveled Washer× 2
- Spigot Hex Nut× 1
- Wrench× 1
- Screwdriver× 1
- Plastic Spigot× 1
- Silicone Plug× 1
Selected Filter Package
Your package includes the BO Series Carbon Filters selected with this system. The filter option may vary based on your product selection.
- Selected Filters SF Series Core Filter
- Package Quantity 1 Box / 1 Filter
- System Use Install One Filter Only
2.25 Gallon Water Filter System Installation Video
Watch this step-by-step guide to set up your Purewell 2.25 gallon water filter system and install the filter element in the correct position before first use.
2.25 Gallon System Setup & Filter Placement
This video shows how to assemble the Purewell 2.25 gallon water filter system, including how to place and install the filter element properly for daily filtration.
NSF Certified for Your Health
Independently tested to meet NSF/ANSI 42 & 372 standards, the highest level of trust in water filtration.
Lead-Free Guarantee (NSF/ANSI 372)
Certified lead-free materials to keep your water worry-free.






















































