Best Water Purifier Without Water Wastage

Since water is a valuable resource, you should take all measures possible to ensure minimum wastage.

Your goal should be to have a purification process that guarantees clean water without wasting much of it.

Since the market has so many options, we have prepared a detailed review of the best water purifier without water wastage.

Let’s delve in.

Express Water RO5DX RO Filtration System

Express Water RO5DX Reverse Osmosis Filtration NSF Certified 5 Stage RO System with Faucet and Tank...
  • Reverse Osmosis Water Filter: Experience what water should taste like with the Express Water reverse osmosis water filtration system removing up to 99.99% of Lead, Chlorine, Fluoride, Nitrates, Calcium, Arsenic, and more.
  • Water Purification System: Drink the healthiest water on Earth. All our water filters are specially engineered to work together, producing the safest and best tasting water you’ll ever drink
  • Under Sink Water Filter: Don’t waste money on professional installation. Express Water’s quick and easy-to-understand design means you can install and understand everything about your new water filtration system

Top on the list is this Express filtration system, the reason being its an efficient purifier with minimal water wastage.

This system can eliminate up to 98% of the contaminants present in your water in its purification process.

With the five stages purification process, the final product is pure water. The first stage works to remove the larger particles such as sand, dust, rust, and dirt.

The next two stages comprise granular activated carbon that helps the system remove the chemical components such as organic materials and chemicals like chlorine.

Reverse osmosis happens in the fourth stage, where the more difficult impurities such as lead are eliminated. The semi-permeable membrane allows only the water molecules through, resulting in purified water.

Finally, the final stage polishes your water to give it great an excellent taste and remove any foul odor in your water.

This system is fitted with a leakage detector to reduce water wastage, and an increase in the detector’s moisture content raises the alarm. This makes it possible to mitigate any leakage within the system.

It’s also fitted with a vital shut-off valve in case excess water from leakage is detected. Furthermore, the filters in this system are double sealed, which means they are preserved to give you maximum value.

This purifier can withstand a flow rate of up to 0.8 GPM. It allows the water to flow fast without being held in the system, which could overwhelm it, leading to leakages.

This system also comes with a 4-gallon tank which also aids in minimizing water wastage. Holding the water in the tank means that you get access to pure water when you need it, and in case of a break down the tank can hold the water as you do the repairs.

Filters that come with this system last up to 6 months. This means in a year, you get to flush the system when cleaning it twice; thus, minimal water loss during the replacement procedure.


  • Zero leakages
  • High flow rate
  • Removes most contaminants
  • Removes foul odor from your water
  • Easy to maintain
  • Great tasting water
  • Easy to install


  • Some people find it costly

iSpring RCC7AK, Under Sink RO Drinking Water Filter

iSpring RCC7AK 6-Stage Under Sink Reverse Osmosis Drinking Water Filter System, NSF Certified,...
  • Certified to NSF/ANSI 58, 6-Stage Alkaline Remineralization Layered Filtration: Exclusively designed to restore the natural alkalinity and mineral balance of water; this reliable and ultra-safe Reverse Osmosis (RO) water filtration system converts your water into clean, pure and healthy drinking water by removing up to 99% of over 1, 000 harmful contaminants like chlorine, fluoride, lead (removes up to 98%), arsenic, asbestos, calcium, sodium and more.
  • BENEFITS: The iSpring RCC7AK water softener includes an additional sixth stage - an Alkaline Remineralization filter which restores healthy minerals and produces a balanced alkalinity, which gives your water a more natural taste than regular 5 stage RO water filter; the RO membrane removes not only harmful pollutants but also a few helpful minerals. As a result, a standard 5 stage RO system produces slightly acidic water with a pH of 7. 0 or below
  • FEATURES: Beautiful European-Style kitchen faucet. Transparent 1st stage housing for easy visual inspection. Three extra long life pre-filters to remove large contaminants and protect RO membrane. Ultra fine (RO) filter to remove contaminants down to 0. 0001 microns; fine GAC filter to provide final polishing to the purified water and (AK) filter to finally restore just the right proportion of healthy minerals and a natural alkaline balance. The end result is great-tasting bottled-water quality

With this RO water purifier, you are assured of quality purified water and minimal wastage. This system uses six stages in its purification process.

Fitted with a clear first-stage filter makes it possible for you to monitor as it wears out visually. With this, you can easily plan for the replacement in good time.

The consecutive four stages involve a thorough purification procedure that eliminates up to 99% of the contaminants in your water.

The Ispring has a 6th stage filter whose work is to restore the essential minerals lost in the previous stages. This aspect makes this system a favorite for most households.

This purifier has a leakage detector to prevent water wastage that will prevent massive water loss through leakages.

The overhead tank that comes with this purifier allows it to hold water during repairs and when the system is not in use. Additionally, the shut-off valve helps mitigate water wastage by shutting down the system before a leakage.

Since this purifier can withstand water pressures of up to 70PSI, it manages to contain wastage through the increased flow rate that it can handle.

The increased rate also enables it to dispense up to 75 gallons per day of purified water which is a high volume that can easily satisfy a large family water requirements.


  • Easy installation and maintenance
  • Great tasting water
  • Retains essential minerals
  • Durable
  • High flow rate
  • Minimal water wastage


  • Expensive

APEC Water Systems ROES-50 Drinking Water Filter System

APEC Water Systems ROES-50 Essence Series Top Tier 5-Stage Certified Ultra Safe Reverse Osmosis...
  • Supreme quality - designed, engineered, and assembled in USA to guarantee water safety & your health.
  • Only technology to remove up to 99% of contaminants such as chlorine, taste, odor, VOCs, as well as toxic fluoride, arsenic, lead, nitrates, heavy metals and 1000+ contaminants. Max Total Dissolved Solids - 2000 ppm. Feed Water Pressure 40-85 psi
  • WQA Certified System. Premium long-lasting filters used to treat tap water, well water. Provide unlimited clean, refreshing crisp tasting water superior to bottled water

Looking for a purifier that prevents water wastage? This is it. The quality connector fittings that this purifier has do not require extra lock clips to seal the leaks. With strong stainless steel teeth and unique o-rings, the system can mitigate water wastage.

Unlike other brands in the same category, this system doesn’t need a leak detector. It’s self-sufficient.

Zero leakage threats mean minimal water wastage.

At the same time, you are guaranteed quality purified water that is not only great at the taste, but all the bad odor has also been eliminated.

The APEC is WQA certified; this system guarantees quality assurance in its components and procedures. Meaning the RO water purifier will meet your expectations in conserving and purifying your water.

The purification capacity of this system is 98%. Almost all the contaminants in your water are eliminated. The activated carbon block technology that this purifier uses ensures minimal impurities flow through.

Furthermore, the extensive RO procedure reduces the TDS content in your water and removes bacteria and viruses.

This durable workhorse guarantees to keep your family supplied with purified water for a long time while ensuring minimal water is lost during the process. Get yourself this system that comes with a storage tank with a storage capacity of 3 gallons. This will supply your household with pure water for a long time.


  • Minimal water wastage
  • Highly purified water
  • low maintenance cost
  • Easy installation procedure
  • Durable filters
  • Increased flow rate


  • Can be quite pricey

SimPure Reverse Osmosis Water Filtration System

SimPure Reverse Osmosis Water Filtration System T1-5 Stage Under Sink RO Water Filter - NSF...
  • 💧 REVERSE OSMOSIS with 0.0001 MICRON - The RO membrane is certified against NSF 58 for TDS reduction, using reverse osmosis filtration with an accuracy of 0. 0001μm. With 5 stages filter process, removes up to 99.9% of contaminants such as heavy metals, lead, nickel, cadmium, arsenic, zinc, and chemicals like chlorine, nitrates, fluoride, as well as naturally occurring elements such as calcium, magnesium, and man-made contaminants like PFAS and microplastics, leaving your water safe and fresh.
  • 💧 100% LEAD-FREE FAUCET - The system is pre-assembled with American plumbing fittings and comes with european-style kitchen faucet. The faucet is made of SUS304 stainless steel and lead-free brass body material, never rust and guarding your purified water. With quick-connect, no hassle to install. Follow the comprehensive operator handbook or online assembly video to connect the components using the provided installation kit.
  • 💧 APPLICABILITY - Fits install under sink, the tested full flow rate >3.2 GPH at 60 psi (75 Gallons Per Day), utilizes a 3.2-gallon pressure tank to store purified water for on-demand use (no waiting for the system to process water). All components are made from food-grade materials and premium quality, low maintenance for many years. The water filter system is fully upgraded with quick push connect fittings, does not rely on a water leak detector to protect your home like other brands.

To eliminate water wastage, this purifier comes with quick push connect fittings and doesn’t depend on a leakage detector to control wastage.

The 3.2-gallon storage capacity tank that comes with it ensures that at all times, your family has access to purified water. This means you don’t have to wait for the system to process water on demand.

Also, the pressure water tank ensures that your filtered water flows fast and steady.

With a water pressure of 60 PSI, this purifier comfortably dispenses 75 GPD. This is enough purified water for a large family.

Certified against the NSF 58 standards, you are guaranteed quality end product. This means the system’s technology, the components, and claims that the purifier holds are met.

Unlike conventional RO purification, this system manages to minimize the TDS count of your water, leaving you with great tasting water free from bacteria and viruses.

For optimal functionality and to minimize the chance of water wastage, you need to replace the cartridges after 6 months and the RO membrane after 12 months. This ensures that there is no build-up in your plumbing system that could cause clogging and eventual leakages.

This purifier’s pure to drain ratio is 1:1, unlike other conventional RO purification systems, whose ratio falls between 1:3 and 1:4. This means that the Simpure purifiers waste minimal water.


  • Easy installation and maintenance
  • Minimal water wastage
  • Removes most of the contaminants
  • Long-lasting filters and membrane
  • High flow rate


  • Pricey

Home Master TMHP HydroPerfection Undersink RO Water Filter System

Home Master TMHP HydroPerfection Undersink Reverse Osmosis Water Filter System
  • A Better RO System | Home Master HydroPerfection’s innovative design solves most common problems associated with cannister and tankless RO systems
  • EPA Registered | The Home Master is registered under EPA #97952-AZ-1 and has been approved to kill, inactivate or suppress growth of viruses, bacteria, fungi in water purification devices
  • Mineral Water on Tap | Patented remineralization system found in our Artesian Full Contact model adds calcium and magnesium twice during the purification process for reduced storage tank degradation and great tasting, highly pure, Mineral Water on Tap

This is one of the best RO water purifiers without water wastage. It reduces water wasted by incorporating an in-built permeate pump that minimizes the water wasted by 80%.

This permeate pump increases the production level by 50%, and it’s non-electric which means, you also save on energy.

Consider buying this system for quality purified water and minimal wastage.

Being EPA-approved means that you can suppress the growth of the bacteria and viruses that crop up in your water purifier with this system.

With the filtration stages that include RO, UV, UF technology, you are assured of highly pure water. All these stages aim at giving you the best quality water that will ensure your family’s safety and protection against water-related ailments.

It’s easy to maintain this purifier, as you only need to replace the cartridges and membrane once per year.

You can conveniently have this system installed under your sink, as the permeate pump modification allows you to drain water easily.

However, the extra storage tank that comes with this system allows you to have it fixed at your preferred point in your home. This pump also acts as a TDS controller as the dissolved solids creep into it and drain as waste.

Water purifiers that combine both the RO and UV technologies in their purification processes minimize water wastage.

Having the contaminants eliminated at the initial purification stages means that you have less contaminated water by the end of the purification process. This translates to less rejected wastewater.

The feed water adapter with a shut-off also helps in minimizing water wastage when using this system. By shutting it off when replacing the filters and membranes or repairing the system, you will be conserving the water that would have otherwise gone through the drain.


  • Highly refined pure water
  • Increased flow rate
  • Minimal water wastage
  • Durable
  • Great tasting water
  • Removes foul odor


  • High maintenance cost
  • Not easy to install

Pure Blue H2O Four-Stage RO Water Purifier System

Pure Blue H2O Four Stage Reverse Osmosis Water Filtration System
  • 4 Stage Reverse Osmosis Water Filter System: This professional grade system has 4 separate filters to ensure clean, great tasting water and an electronic faucet monitor that notifies you when it’s time to change your filters
  • Skip the Bottled Water: This home filter system includes 1 Stage 1 Sediment Filter, 1 Stage 2 Pre Carbon Block Filter,1 Stage 3 Membrane Filter, and 1 Stage 4 Post Carbon Block Filter
  • Enjoy Better Water At Home: This water filtration system is certified to NSF/ANSI standards 58 and 372, helping reduce Lead, Fluoride R, Arsenic, Cadmium, Chromium 6, Giardia, and more

Consider investing in this system if you intend to control the water wasted by your purification system.

The system certified against the reputable NSF/ANSI standards means that it meets all the quality requirements that a RO purification system should have.

The reinforced filter housings that come with this unit ensure there is minimal to zero water wastage.

Using sedimentation and RO as the technology behind its purification procedure, you are guaranteed quality water.

Replacing this system’s filters is a hassle-free affair, and it minimizes the water wasted through the shut-off valve that holds the water during repairs or replacements.

With the electronic filter monitor, you will be alerted when it’s time to replace the filter. This means you don’t overwhelm the unit with build-up, whose density could lead to eventual leakage or breakdown of the whole system.

This way, you are minimizing the chances of having the system wastewater through the leakage.

Another way to reduce wasted water through this system is by modifying the system with a permeate pump which minimizes the water wasted to a great extent.

You won’t waste much water with a permeate pump modification.

If you are not confident enough to do the installation properly, consider involving a professional plumber. This way, the system is intact, leaving minimal chances of leakage within the system.


  • Low maintenance cost
  • Minimal water wastage
  • Durable
  • Removes most of the contaminants
  • Removes the foul odor in the water
  • Great tasting water
  • Value for money


  • Lowers the water pressure

Bluonics 5 Stage Undersink Drinking Water Filter System RO Home Purifier

Bluonics 5 Stage Undersink Reverse Osmosis Drinking Water Filter System RO Home Purifier with NSF...
  • Under sink Reverse Osmosis water filtration and softner for pure, safer and healthier water. Bluonics 5 stage RO system removes up to 99% of over 1000 contaminants, including lead, chlorine, fluoride, asbestos, calcium, sodium and more
  • Enjoy clean, safe, good-tasting water for your family every time you turn on the faucet, better than most bottled water. Experience fresher healthier baby formula, tea and coffee, better tasting foods and crystal clear ice cubes.
  • Premium quality RO system ensures highest durability, highest reliability and low maintenance for many years to come. Clear housing makes filter inspection easy.

For quality purified water free from bad odors and with great taste, go for the Bluonics purifier.

This RO water purifier helps you minimize the water wasted during purification by having the quick connect fittings threaded and seamlessly creating a smooth water path.

In most RO water purifiers, water is wasted at the connector’s point, creating a gap allowing water to leak. However, for this system, this hitch is mitigated by the caps that come with this purifier which eliminates the need for connectors.

With the clear filter housing, it ensures that you can easily monitor the filter progress. This way, you can schedule a timely replacement. This means you prevent build-up that could clog your system and eventually lead to water leakage and breakdown.

The 5-stage purification process ensures that your water is freed from most contaminants up to 99%.

Since the system can withstand high water pressure, there is an increased flow rate reducing the water’s contact time with the plumbing system, which minimizes the amount of water wasted.

Install this system under your kitchen sink, and you have minimal water wastage. This is enabled by the reduced contact time.

With the NSF/ANSI certification, the system can eliminate most of the contaminants, and the components are made up of quality material.

This system also acts as a water softener; this reduces the contaminants that could lead to building up in your water, increasing the chances of having leakage within the system


  • Easy maintenance
  • Easy installation
  • Wastes minimal water
  • Refined purification process
  • Great tasting water
  • Removes bad odor
  • impressive flow rate
  • Softens the water


  • Pricey

 Express Water UV RO Water Filtration System – 11 Stage UV Water Filter

Express Water UV Reverse Osmosis Water Filtration System – 11 Stage UV Water Filter with Faucet...
  • Reverse Osmosis Water Filter: Experience what water should taste like with the Express Water reverse osmosis water filtration system removing up to 99.99% of Lead, Chlorine, Fluoride, Nitrates, Calcium, Arsenic, Bacteria, and more
  • UV Water Purification System: Powerful UV Sterilization eliminates coliform, E. Coli, viruses, bacteria, microorganisms, and more from your drinking water
  • Alkaline Water Filter: Alkaline Filtration System with Active Mineral Technology adds Calcium, Potassium, Magnesium, and other minerals to your body needs right in your water

With eleven purification stages, the end product can only be sweet water fully purified, eliminating all the impurities in your water.

This Ro water purifier assures you of minimal water wastage as it comes fitted with an emergency leak detector. Immediately shuts off the system on detecting increased levels of moisture.

This feature ensures minimal water wastage by this water purifier. Consider installing it under your sink. This also works to minimize water loss chances as, after purification, the contact time with pipes is minimal.

Using the RO, UV, UF at some point in the 11 stages of its purification process, this system eliminates most of the impurities that would cause build upon the system. Build-up and clogging increase the chances of having leakages within your system.

Upon detecting excess water flow in the system, the automatic leak valve automatically shuts off, preventing water wastage through overflowing.

Additionally, any leaked water is absorbed by a fabric disk in contact with the system’s floor. Absorption experienced on this disk means there is an overflow and the system automatically shuts off.

Besides all the mitigating factors, the system spins the water through all these stages, ensuring that all the contaminants are eliminated. This means there is minimal water to be drained. Thus there is zero water wastage.

All this effort is to ensure that minimal water is wasted during the purification process. This makes this system a favorite for households seeking to minimize the amount of water wasted.


  • Minimal water wastage
  • High flow rate
  • Highly purified water
  • Increased capacity
  • Sweet tasting water
  • Removes foul odor from water
  • Retains essential minerals


  • Not easy to install

APEC Water Systems ROES-PHUV75 RO Drinking Water Filter System

APEC Water Systems ROES-PHUV75 Essence Series Top Tier Alkaline Mineral and Ultra-Violet UV...
  • Supreme quality – designed, engineered and assembled in USA to water safety & your health. Effective in removing up to 99% of contaminants including arsenic, chlorine, lead, fluoride, heavy metals and 1000+ contaminants
  • Premium long-lasting filters used to treat tap water and well water, providing unlimited clean, refreshing crisp tasting water superior to bottled water
  • The continuous UV sterilization destroys up to 99. 99% of bac., vir.& cysts, and kills parasites in un-chlorinated water for extra protection

Engineered to remove more than 1000 contaminants with a 99% success rate, this RO purification system guarantees pure water.

The 7-stage purification procedure that includes UV sterilization makes it possible for this unit to dispense ultra-refined content at the end of the purification.

In mitigating water wastage, the system comes with reinforced filters with unique O-rings that hold the housing together and avoid leakage.

With the capability to remove all the impurities in your water, the need to drain contaminated water is minimal. This leads to zero water wastage.

Consider having this system installed under your sink as it reduces the need for the water to flow long distances to the outlet faucet, which further mitigates water loss risk.

After the 4th stage of reverse osmosis, the rejected water flows through for UV sterilization, meaning the rejected water is further purified rather than drained,

With an allowance of further modifications to incorporate a permeate pump, it means you can further reduce the water wasted by including it in the unit.

During installation, ensure that the fittings are tightly held to their place. You can even reinforce the connector points with Teflon tape to ensure minimal leakage allowance.

The 7 stages that this unit involves eliminate all the possibility of having build-up and eventual clogging, leading to eventual leakage wasting more water.

With a 4-gallon water storage tank, the system holds purified water, which means purification doesn’t have to be done every time you need filtered water. This further helps reduce the water wasted.

Additionally, it comes with a ball valve that prevents water flow once the tank is full.

Since this system can withstand high water pressure, the flow rate is also increased; thus, your water contact with the unit is minimized. This further ensures minimal water is wasted.


  • Highly purified water
  • Long-lasting filters
  • Durable
  • NSF/ANSI certified
  • Easy installation
  • Reduced water wastage


  • Pricey

Frizzlife RO System – Tankless 400 GPD Drinking Water Filtration System

Frizzlife Reverse Osmosis System - Tankless 400 GPD Drinking Water Filtration System, Quick Twist...
  • [TOP TIER FILTRATION PERFORMANCE] Adopting composite pre-filter and RO membrane with highest filtration precision at 0.0001 micron, PD400 under sink reverse osmosis water filtration system induces a deep 5-stage filtration mechanism that can eliminate more than 1000+ kinds of harmful contaminants (99.99%) from water including LEAD, CHLORINE, FLUORIDE, Heavy metals, Chloramine, VOCs, TDS, Limescale, Arsenic and Asbestos and more. A TDS meter is also included in the package. You know your water!
  • [INNOVATIVE TANKLESS DESIGN] Different from conventional RO systems, Frizzlife PD400 reverse osmosis system has an impact design without a bulky tank. It saves up to 70% of space and perfectly fits most standard US cabinets. No more secondary pollution shall be worried due to unventilated tank! Additionally, the integrated water cycle board guarantees the RO water filter from water leakage.
  • [LOW DRAIN RATIO & ULTRA LONG SERVICE LIFE] The RO water filtration system has a remarkable low drain ratio at 1.5:1(pure: drain), saving up to 450% of water when compared to conventional ones(1:3). With a high capacity of 400 gallons per day, the tankless RO water filter system produces instant fresh pure water to the provided lead-free faucet, filling a cup of water within 12 sec. Two huge filter cartridges loaded, the service life of the system is ultra-long, costing only $0.2 per day!

With an impressive pure to drain ratio of 1.5:1, this system beats the conventional RO purification systems, whose ratio is 1:3.

This means that the water wasted by this system is minimal. This is enabled by the easy twist-in design and the absence of many connectors that increase water-wasting chances.

The integrated cycle board that comes with this unit guarantees no leakages, enabling the unit to conserve the water during the purification process.

It’s easy to maintain this purifier as the RO membrane can last for up to 2 years, and the filter requires replacement just once a year.

This minimal interference with the system replacing the components also reduces the chances of leakages resulting from loose tightening.

The installation of this unit is easy, and you can even do it yourself. With this, you will be keen to ensure you tighten the twist design enough to ensure there is no room for leakage. This further reduces the water wanted by this system.

Being a tankless purifier means you will not have tank overflows that often waste the water on conventional RO water purifiers. This plays a huge role in reducing the amount of water wasted by the purifier.

With a fast water flow capability, this filter reduces the amount of water wasted by a slow flow rate. Additionally, the filter life monitor allows you to plan on replacement on time, and this helps in reducing the rejected water wastage once the filter is worn out.

This purifier can dispense 400 gallons of water ina day, making it easy for you to meet your filtered water demands with no downtime.


  • Great tasting water
  • Minimized water wastage
  • Increased capacity
  • Removes bad odor
  • refined pure water
  • Requires minimal space
  • Easy to install and maintain
  • Affordable


  • Not suitable for well water

AQUA Z PURE 14 Stage Ro+Uv+Uf+Tds+Alkaline Water Purifier

AQUA Z PURE 14 Stage Ro+Uv+Uf+Tds+Alkaline Water Purifier
  • 01- Free 5 Micron PP Spun Filter Cartridge 4 Nos Worth
  • 02- Free Pre-Filter Worth

For a 14 stages water purifier, you can rest assured the water purification process is unmatched. The end product is water with zero impurities and with the necessary minerals for your body.

Given that this purifier uses the RO, UV, UF in its purification procedure, minimal water is wasted. This is enabled by zero water rejection due to thorough filtration and combined purification technologies.

With this system, your household is guaranteed great-tasting water that also has a great smell.

Consider investing in this system which has a high flow rate and requires minimal maintenance.

The attached outlet knob ensures no water is wasted during the purification procedure.


  • Highly refined water
  • Minimal water wastage
  • Easy installation
  • Low maintenance cost
  • Retains necessary minerals


  • Pricey

Buyers Guide

Consider the following factors when looking for the best purifier without water wastage.

1. Pure to Drain Ratio

This is the amount of water purified compared to the volume of water wasted during the purification procedure. Go for a purifier that has zero water wastage, or the ratio is minimal.

2. Purification Technology

Purifiers that use UV and UF purification technologies are known to waste zero water. However, if your TDS level is high, you will have to go for RO water purifiers or use the combined technologies.

RO water purifiers are also known to be efficient with an increased flow rate, and some also act as softeners.

If you buy a RO water purifier, check out for the pure to drain ratio and the allowance to have it fitted with a permeate pump. This way, you are guaranteed zero water wastage.

3. Certification

Go for a water purifier that is certified by reputable bodies. Consider the NSF/ANSI certification or the WQA. This way, you will have peace of mind knowing the purifier has met the quality obligations.

4. TDS Control Knob

If you choose to go for a RO water purifier, ensure it has a TDS control knob. When an RO water purifier dispenses water with a shallow TDS level, more water is wasted. The knob will allow you to increase the TDS level and thereby minimize the water wasted.

5. Allowance for Permeate Pump Modification

For zero water wastage when using a RO water purifier for your purification, check to see it has a permeate pump. If it doesn’t have one before you buy, ensure it can be modified to accommodate one.

This way, you are guaranteed you will have minimized the water wasted drastically.

6. Water Pressure

A high water pressure translates to a raised flow rate. Purifiers that can handle an increased flow rate mean reduced water and your plumbing system’s contact time. This way, contaminants that cause build-up and clogging with eventual leakage are not retained on the pipes.

7. Leakage Detector

Buying a purifier with a leakage detector will give you peace of mind knowing that any slight leakage in the filter will detect fast.

8. Ball Valve for the Tank

For purifiers that come with tanks, ensure that they either have a ball valve or an automatic shut-off valve. These stop overflow in the tanks once full. They allow you to mitigate the water wastage risk.

9. Space Available

When buying a water purifier, consider the space you have available to host the purifier. RO water purifiers are generally bulky and will need a bigger space.

10. Cost

Water purifiers that waste minimal water vary in cost. Depending on your clean water demand and space available, there is a purifier for every budget. You can even start with a filter pitcher as they cost less, waste less water, and you will still get quality water.

Frequently Asked Questions

1. Which RO purifier wastes less water?

RO purifiers that are fitted with permeate pumps waste less water. Also, those fitted with leakage detectors minimize the risk of water wastage.

2. What type of water filter leads to wastage of water?

The conventional RO that are not fitted with permeate pump wastes more water at the rate of 1:3. Meaning for every glass of filtered water dispenser, 3 glasses of rejected water are wasted.

Therefore when buying the RO filter, insist on the permeate pump modification.

3. Which water purifier has a low maintenance cost?

Water purifiers with several purification stages have minimal maintenance cost since the filters’ replacement is not regular.

4. Does water purifier wastewater?

Yes. A water purifier will sometimes wastewater if the installation is done purely and maintenance neglected. Lack of leakage detection also leads to purifiers wasting water.

5. How can I achieve zero water wastage?

Invest in a water filter that uses either UV or UF filtration technology. If you use RO water purifiers, ensure they are fitted with permeate pumps.

6. Which water purifiers last long?

With proper maintenance, most of the purifiers can last for a long time. Ensure you replace the filters and membranes on time for longevity.

7. Between RO and UV purifier, which one wastes more water?

The conventional RO purifiers waste more water compared to the UV purifiers. However, if TDS levels are high in your water, you need to invest in a combined purifier for maximum benefit.

Add a permeate pump to the RO purifier to minimize water wastage.

8. Do I need a storage tank to reduce water wastage?

A storage tank only serves to hold the filtered water to avoid running the purifier every time you need a glass of pure water. Water storage after purification is a critical aspect as it prevents water loss.


Water purifiers do a great job in ensuring your household is supplied with purified water. However, the purification process should be done in a way there is minimal to zero water wastage.

Zero water wastage can only be by having the right purifier for the process. Consider the purifiers listed above for highly filtered water and minimal water wastage.

Ensure timely maintenance of the purifiers. This way, you will have pure water all through, and still, during the purification process, less water is wasted.

Leakage in the purifiers, especially at the connector points, is a great contributor to water loss. Invest in a leakage detector even if your system doesn’t come with one; you can have the plumber install one.

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