JR Water Filtration Learning Centre
Water Filtration Learning Centre
Understand what water filters remove, which technology does what, and how to choose the right system for your home.
JR Gas & Water's filtration learning centre brings together our detailed guides on contaminants, micron ratings, activated carbon, water hardness, chlorine and chloramine, unusual taste or smell, pressure loss and cartridge replacement. Start with your problem and work toward the treatment that actually matches it.
What Do You Need Help With?
Choose the question closest to yours and we'll send you directly to the most useful JR guide.
These guides explain treatment categories and common residential applications. Final system selection should be based on the water source, treatment objective, required flow and exact product performance.
Water Filtration Is Really a Treatment-Matching Problem
A sediment filter catches particles. Activated carbon can reduce chlorine, taste, odour and selected chemicals. Specialist carbon can target more demanding contaminants such as chloramine. Reverse osmosis can reduce a broad range of dissolved substances at a drinking-water outlet. UV addresses microbiological treatment. Water softeners specifically treat hardness.
Problems occur when these technologies are treated as interchangeable.
This learning centre is designed to help Brisbane and Gold Coast homeowners identify the problem first, understand the appropriate treatment category second, and only then choose the actual filtration system.
Explore the Complete Water Filtration Guide Library
Each guide covers one major water-filtration question in depth and includes its own diagnostic, comparison or selection tool.
What Do Water Filters Remove?
Understand sediment, chlorine, chloramine, PFAS, fluoride, hardness, bacteria, dissolved salts and which filtration technologies can — and cannot — reduce them.
Explore Contaminants → 02Water Filter Micron Ratings Explained
Compare 1, 5, 10, 20 and 50 micron filters, nominal vs absolute ratings, whole-house applications and the relationship between fine filtration and pressure loss.
Compare Micron Ratings → 03Carbon Block vs GAC Water Filters
Compare compressed carbon block with granular activated carbon for drinking water, whole-house flow, chlorine, chloramine, taste and contaminant treatment.
Compare Carbon Types → 04Water Filter vs Water Softener
Learn the difference between filtration, genuine water softening and scale-control treatment — and why standard sediment and carbon filters do not remove hardness.
Compare Filter vs Softener → 05Chlorine vs Chloramine in Drinking Water
Understand why drinking water is disinfected, how chlorine and chloramine differ, and why chloramine can require more specialised carbon treatment.
Compare Disinfectants → 06Why Does Filtered Water Taste or Smell Different?
Diagnose chlorine taste, carbon fines, stale water, metallic taste, rainwater odours, new-filter changes and signs an old cartridge may be exhausted.
Diagnose Taste & Smell → 07Low Water Pressure After Installing a Water Filter
Understand filter pressure drop, cartridge loading, housing size, micron restriction, peak flow and why a system can work with one tap but struggle with two showers.
Diagnose Low Pressure → 08How Do I Know When My Water Filter Needs Changing?
Learn the signs of cartridge exhaustion, how service intervals vary between sediment, carbon, RO and UV systems, and why good pressure does not prove carbon is still effective.
Check Filter Replacement →Find the Right Water Filter Guide by Problem
If you already know what is bothering you about the water, use that symptom as the starting point.
Dirt, Rust or Sediment
Start with micron size and understand how fine filtration affects flow and cartridge life.
Micron Ratings Guide →Chlorine Taste or Smell
Understand carbon treatment and whether the disinfectant is chlorine or chloramine.
Chlorine vs Chloramine →Hard Water or Scale
Determine whether you need filtration, softening or scale management.
Filter vs Softener →Specific Contaminant
Start with what different filtration technologies actually remove.
Contaminant Guide →Water Tastes Different
Diagnose new cartridges, stale filters, plumbing and source-water effects.
Taste & Smell Guide →Low Water Pressure
Work out whether the cartridge is blocked or the whole system is too restrictive.
Pressure Guide →Filter Is Getting Old
Check replacement intervals, capacity and signs the cartridge is due.
Replacement Guide →Main Types of Residential Water Filtration
Different technologies perform different treatment jobs. A good system combines only the stages needed for the water and the treatment objective.
Sediment Filtration
Removes suspended material such as dirt, rust, silt and other particles.
Micron rating, surface area and sediment loading determine how fine the filtration is and how quickly the cartridge becomes restrictive.
Activated Carbon
Commonly used for chlorine, taste, odour and selected organic compounds.
Carbon quantity, media type, flow and contact time are all important.
Catalytic Carbon
Specially processed carbon that can offer enhanced performance for treatment targets including chloramine.
Reverse Osmosis
Membrane treatment used primarily at drinking-water outlets to reduce a broad range of dissolved substances.
UV Treatment
Uses ultraviolet light for microbiological treatment and is especially relevant to appropriately designed rainwater systems.
Water Softening
Ion-exchange softening targets dissolved calcium and magnesium hardness. It performs a different job from normal sediment and carbon filtration.
Which Water Treatment Is Used for Which Problem?
This is the core distinction to understand before comparing actual products.
| Water Concern | Common Treatment Category | Useful Guide |
|---|---|---|
| Dirt, rust, silt | Sediment filtration | Micron Ratings Explained |
| Chlorine | Activated carbon | Chlorine vs Chloramine |
| Chloramine | Suitable / catalytic carbon with adequate contact time | Chlorine vs Chloramine |
| Taste & odour | Often activated carbon, depending on cause | Taste & Smell Guide |
| Hardness | Water softening | Filter vs Softener |
| Dissolved salts / TDS | Reverse osmosis for appropriate point-of-use applications | What Do Filters Remove? |
| Selected PFAS compounds | Purpose-selected carbon and/or appropriate membrane treatment | What Do Filters Remove? |
| Fluoride | Appropriate specialist treatment such as RO | What Do Filters Remove? |
| Microbiological concern | Purpose-designed treatment such as UV where suitable | What Do Filters Remove? |
Whole-House Water Filter or Drinking-Water Filter?
Whole-House Water Filtration
Treats water before it is distributed to multiple fixtures throughout the property.
- High flow requirement
- Pressure drop is critical
- Larger cartridges or media systems
- Can protect downstream fixtures and equipment
- Processes much more water
Drinking-Water Filtration
Treats only the water used from a dedicated tap or selected kitchen outlet.
- Much lower flow requirement
- Smaller cartridges can be effective
- Suitable for carbon and RO treatment
- Only treats water used for drinking / cooking
- Often lower total media usage
The 4 Things Every Water Filter System Has to Get Right
1. Correct Treatment
Choose media designed for the actual particle, chemical, mineral or microbiological problem.
2. Enough Capacity
Cartridge size and media quantity determine how much water and contaminant load the system can handle.
3. Enough Flow
Whole-house filtration must treat water without creating unacceptable pressure loss during peak demand.
4. Proper Maintenance
Filters have finite physical or chemical capacity and must be changed according to their service requirements.
Bonus: Correct Staging
Heavy sediment should generally be dealt with before expensive or restrictive downstream media.
Bonus: Actual Water Conditions
Treat the water that exists at the property rather than buying filtration based only on generic contaminant lists.
Water Filtration in Brisbane & the Gold Coast
JR's local filtration advice is built around the difference between treated mains water, private rainwater systems and the actual goal of the homeowner.
Brisbane Mains Water
Brisbane homes considering filtration are often looking to alter taste, disinfectant residual, selected contaminants or sediment rather than make untreated water safe.
Whole-house systems need enough cartridge area and carbon capacity to maintain useful flow across the property.
Gold Coast Mains Water
Gold Coast homes face the same basic decision: determine the treatment objective first, then size the filtration technology around household flow and service capacity.
Drinking-water and whole-house treatment should not be sized the same way.
Rainwater Properties
Rainwater treatment requires broader consideration of roof catchment, first flush, tank sediment, filtration and microbiological treatment.
A carbon cartridge alone should not be treated as a complete rainwater treatment strategy.
How to Choose a Water Filter Without Guessing
Define the Problem
Sediment, chlorine, hardness and dissolved contaminants require different treatment.
Choose Treatment Point
Decide whether you want drinking-water treatment or filtration throughout the entire home.
Size the System
Match media capacity, housing size and flow rating to actual household demand.
Plan the Servicing
Know cartridge replacement requirements before choosing the system.
Common Water Filtration Misconceptions
"More Stages Means Better"
Extra stages only help if each one performs a useful treatment function.
"Lower Micron Means Better"
Finer filtration can increase pressure loss and cartridge loading without improving dissolved-contaminant treatment.
"Carbon Removes Everything"
Carbon is useful for many compounds but does not perform the same job as RO, UV, sediment filtration or softening.
"Clear Water Means Clean Water"
Many dissolved substances cannot be seen by looking at a glass of water.
"Good Flow Means the Filter Is Fine"
Carbon can lose treatment capacity while remaining physically open enough to provide normal water flow.
"One Filter Fits Every Home"
Water source, treatment goals, household size and peak flow make filtration requirements property specific.
Not Sure Where to Start?
For most customers, this sequence answers the filtration question without jumping between unrelated topics.
Step 1: What Are You Trying to Remove?
Start with our contaminant guide to understand which technologies perform which jobs.
What Do Water Filters Remove? →Step 2: Choose the Treatment Style
If carbon is involved, understand carbon block vs GAC and whether chlorine or chloramine is the target.
Carbon Block vs GAC →Step 3: Size for Flow
Whole-house filtration needs enough capacity to avoid unnecessary pressure loss.
Water Filter Pressure Guide →Step 4: Choose the Micron Level
Select sediment filtration around the actual particle load rather than automatically choosing the smallest number.
Micron Ratings Explained →Step 5: Know the Maintenance
Understand cartridge life, rated capacity and replacement symptoms before buying.
Filter Replacement Guide →Step 6: Compare Actual Systems
Once the treatment requirement is clear, compare JR water-filter options.
View Water Filters →Water Filter Questions
What type of water filter do I need?
Start by identifying the treatment objective. Sediment, chlorine, chloramine, hardness, dissolved salts and microorganisms require different filtration or treatment technologies.
What does a water filter actually remove?
It depends on the filter technology. Sediment filters remove suspended particles, carbon targets selected chemicals and taste or odour compounds, RO reduces many dissolved substances, and specialist technologies perform other treatment functions.
What micron water filter should I use?
The correct micron rating depends on particle size, sediment loading, required flow and system design. Smaller micron numbers are not automatically better.
Is carbon block better than GAC?
Neither is universally better. Carbon block can provide controlled flow paths and fine particle retention, while properly sized GAC systems can provide large carbon volumes and strong whole-house flow.
Do I need a water filter or a water softener?
Filtration addresses particles, chemicals and other selected contaminants. A conventional water softener specifically reduces calcium and magnesium hardness.
Does a water filter remove chlorine?
Appropriately sized activated-carbon filtration is commonly used to reduce free chlorine.
Does a water filter remove chloramine?
Selected carbon systems can reduce chloramine, but media type, media volume, contact time and flow are particularly important.
Why does filtered water taste different?
Filtration changes the composition of the water by reducing selected compounds. New cartridges, ageing cartridges, plumbing and the source water can also influence taste and smell.
Do whole-house water filters reduce water pressure?
Every filtration system creates some resistance. Correctly sized whole-house systems are designed to keep pressure loss acceptable at the required household flow.
How often should water filters be changed?
There is no universal interval. Cartridge type, water usage, sediment loading, treatment capacity and manufacturer requirements all affect replacement timing.
Is a whole-house filter better than an under-sink filter?
They serve different purposes. Whole-house filtration treats water throughout the property, while under-sink systems treat only selected drinking and cooking water.
Do I need to filter Brisbane mains water?
Household filtration is generally an additional treatment choice rather than a requirement for making Brisbane mains water potable. Whether it is useful depends on the homeowner's treatment goals.
Do I need to filter Gold Coast mains water?
Gold Coast household filtration is also normally an optional additional treatment choice. Choose a system only after identifying what you want changed in the water.
Can the same filter be used for rainwater?
Rainwater treatment often requires different staging because sediment and microbiological risks can differ substantially from treated mains water.
Does more filter stages mean better water?
No. Each stage should have a defined treatment function. Adding unnecessary stages can increase cost, servicing requirements and pressure loss.
Can one water filter remove everything?
No single residential filtration technology should be assumed to remove every possible contaminant. Treatment needs to be matched to the actual water-quality objective.
Understand the Water First. Then Choose the Filter.
JR Gas & Water supplies and installs whole-house, under-sink, reverse-osmosis and rainwater filtration systems across Greater Brisbane and the Gold Coast. Use the guides above to identify the treatment you actually need, then compare filtration systems built around that requirement.