Energy Recovery Inc Enhances Desalination Industry’s Most Efficient, Reliable Energy Recovery Devices

ERI PX Technology Ensures Best-in-Class Availability, 25-year Lifetime and 97.2 Percent Efficiency for Global Desalination Plants

ERI’s technology is currently in use in many of the world’s largest desalination plants, helping to save more than $700 million per year in energy costs alone.The PX-Q300 device strengthens the efficiency and durability of previous ERI PX energy recovery devices, ensuring an industry-leading uptime of 99.8 percent and guaranteeing high efficiencies at no less than 97.2 percent. Additionally, all ERI PX devices are designed for a lifetime of more than 25 years, which when coupled with the PX devices’ market-leading uptime, saves customers millions of dollars through energy reductions and zero unplanned downtime.“Even one day of unplanned downtime per month can cost a facility as much as $6.8 million a year over the lifetime of the plant. Many plants experience weeks of unplanned downtime each year due to the use of inferior technologies. To avoid these unproductive occurrences and eliminate the crippling costs associated with downtime, ERI customers rely on PX technology to insure 99.8 percent uptime,” said Tom Rooney, chief executive officer, ERI. “ERI PX devices have set the industry standard in design for greater performance and leading efficiencies, which mean greater savings and less worries for our customers who strive to produce drinking water of the highest quality at the lowest cost to consumers.”Energy Recovery Inc (NASDAQ:ERII) designs and develops energy recovery devices that significantly reduce energy consumption for desalination and other industrial processes. Energy Recovery’s prominence in the desalination market includes notable technologies such as the PX Pressure Exchanger™ (PX™) devices, the ERI™ TurboCharger hydraulic turbine energy recovery devices and the ERI™ AquaBold™ and ERI™ AquaSpire™ high- pressure pumps. In total, Energy Recovery has more than 12,000 devices installed worldwide. The company is headquartered in the San Francisco Bay Area with offices in key centers worldwide, including Madrid, Shanghai, and the United Arab Emirates. For more information about Energy Recovery Inc, please visit www.energyrecovery.com.About Energy Recovery IncThe new PX-Q300 device also offers a new and improved feature with a decrease in sound levels to less than 81 decibels–for much quieter operations.

Energy Recovery Inc (NASDAQ:ERII) designs and develops energy recovery devices that significantly reduce energy consumption for desalination and other industrial processes. Energy Recovery’s prominence in the desalination market includes notable technologies such as the PX Pressure Exchanger™ (PX™) devices, the ERI™ TurboCharger hydraulic turbine energy recovery devices and the ERI™ AquaBold™ and ERI™ AquaSpire™ high- pressure pumps. In total, Energy Recovery has more than 12,000 devices installed worldwide. The company is headquartered in the San Francisco Bay Area with offices in key centers worldwide, including Madrid, Shanghai, and the United Arab Emirates. For more information about Energy Recovery Inc, please visit www.energyrecovery.com.

WorldWater & Solar Technologies and Gamesa of Spain Donate Two Solar Water Purification Systems to Devastated Areas of Japan

Mobile MaxPure® Units – One Reverse Osmosis System to Clear Radiation from Drinking Water and One Freshwater System to Purify Polluted Water – To Be Air Shipped This Week from WorldWater’s Princeton Headquarters

The company has 30 production facilities in Europe, the US, China and India, and 7,300 employees worldwide.PRINCETON, N.J. -- Two solar- driven water purification systems called Mobile MaxPure®(MMP) will be air shipped to Japan this Thursday, April 14 to help the people in villages near the Fukushima Daiichi Nuclear Plant. The donations are made and announced by WorldWater & Solar Technologies, Inc. of Princeton, manufacturers and marketers of the MMP solar systems, and by Gamesa of Spain, the multinational wind manufacturer with major US operations.About Gamesa (www.gamesacorp.com)WorldWater & Solar Technologies, Inc. (WWST) owns and operates technology with a 20 year history of innovation, development and global deployment. The Company’s proprietary solar-driven platforms generate for water pumping, purification, desalination and power for irrigation. WWST offers stand-alone and distributed solutions for instant infrastructure through its Mobile MaxPure® technology and product lines, which produce 30,000 gallons of potable water from freshwater sources 24 hours a day, 7 days a week, using solar power and embedded batteries. Its Reverse Osmosis systems desalinate and purify water (including removing of nuclear radiation).More than 15 years’ experience and 21,000 MW installed in 30 countries consolidate Gamesa as a global leader in wind energy technology. Its comprehensive response in this market includes the design, manufacture and installation of wind turbines, as well as the management of operation and maintenance services for close to 14,000 MW.Gamesa is also a world leader in the development, construction and sale of wind farms, having installed over 4,100 MW and with a portfolio of more than 22,600 MW of wind farms at varying stages of development in Europe, America and Asia.About WorldWater & Solar Technologies, Inc. (www.worldwatersolar.com)This action is related to the corporate strategy of both Companies to be actively involved in those communities where they operate, both providing initiatives and solutions.

The company has 30 production facilities in Europe, the US, China and India, and 7,300 employees worldwide.

H2O Innovation's Professional Water Technologies Enters Into a Sales Representation Agreement With Omya for EMEA Market

H2O Innovation Inc. ("H2O Innovation" or the "Company") (TSX VENTURE:HEO)(ALTERNEXT:MNEMO:ALHEO) announces today that its Professional Water Technologies ("Professional Water Technologies" or "PWT") business unit, specialized in reverse osmosis specialty chemicals and membrane forensics services, has signed a sales representative agreement (the "Agreement") with Omya International AG ("Omya"), a leading global producer of industrial minerals, and a worldwide distributor of chemical products. Under the Agreement, Omya will represent PWT's complete line of reverse osmosis antiscalants and membrane cleaners in Europe, the Middle East and Africa ("EMEA").

Certain statements set forth in this press release regarding the operations and the activities of H2O Innovation as well as other communications by the Company to the public that describe more generally management objectives, projections, estimates, expectations or forecasts may constitute forward-looking statements within the meaning of securities legislation. Forward-looking statements concern analysis and other information based on forecast future results and the estimate of amounts that cannot yet be yet determined. Forward-looking statements include the use of the words "expect", "believe", "estimate" and other similar terms as well as those usually used in the future and the conditional, notably regarding certain assumptions as to the success of a venture. Those forward-looking statements involve a number of risks and uncertainties, which may result in actual and future results of the Company to be materially different than those indicated. Information about the risk factors to which the Company is exposed is provided in the Annual Information Form dated September 21, 2010 available on SEDAR ( www.sedar.com ). Unless required to do so pursuant to applicable securities legislation, H2O Innovation assumes no obligation to update or revise forward-looking statements contained in this press release or in other communications as a result of new information, future events and other changes.Building on 11 years of experience, H2O Innovation designs, manufactures, and integrates state-of-the-art custom-built water treatment systems for the production of drinking water and industrial process water, the reclamation and reuse of water, and the treatment of wastewater in the municipal, commercial, institutional, industrial, oil & gas, mining, and energy markets. The Company also offers operating and maintenance solutions for membrane filtration and reverse osmosis systems. H2O Innovation has more than 100 employees, seven offices including three manufacturing plants in Canada and the United States and is a founding partner of H2O Innovation India, a joint venture based in Mumbai, India. Shares of H2O Innovation are listed on the TSX Venture Exchange (HEO) and on the NYSE Euronext Alternext Exchange (MNEMO:ALHEO). For more, visit www.h2oinnovation.com .Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) nor the Alternext Exchange accepts responsibility for the adequacy or accuracy of this release.Contacts: Source: H2O Innovation Inc. / www.h2oinnovation.com Guillaume Ducharme 1 418-928-0234 guillaume.ducharme@h2oinnovation.comOmya is a leading global producer of industrial minerals, mainly fillers and pigments derived from calcium carbonate and dolomite, and a worldwide distributor of chemical products. The company's major markets are the paper, plastics, paint/coatings/adhesives industries as well as construction, environment, agriculture, food and pharma. Founded in 1884 in Switzerland, Omya has a global presence extending to more than 100 locations in over 50 countries and 7,000 employees.Existing PWT resources have been assigned to support this initiative and have already started to train and provide marketing support to Omya's sales teams.The announcement of the Agreement takes place today during the IDA World Congress 2011 on Desalination and Water Reuse being held in Perth, Australia, September 4-9. H2O Innovation, Professional Water Technologies and Omya have delegates on site participating at the trade show and conference, where H2O Innovation's Guillaume Clairet, Vice President, Strategic Business Development, will officially start his two-year term as a member of the IDA's Board of Directors. The International Desalination Association (IDA) is a non-profit organization dedicated to the development and promotion of the appropriate use of desalination and desalination technology globally."We are proud to team up with Omya-a recognized leader in its industry with a truly global reach and a growing team of water treatment experts. This Agreement with Omya greatly expands the reach of our sales force in EMEA, a vast region of the world that includes both mature and high-growth potential countries", stated says David Russell, Vice President, Specialty Chemicals and Services. "This initiative provides us with a powerful new tool to grow our international sales and add to the sustained revenues already generated by our existing distributors worldwide. It is an integral part in PWT's sales growth plan, in conjunction with the recent additions to our North American internal sales force and our continuous focus on leveraging H2O Innovation's installed base", concluded David Russell.In EMEA, Omya will represent Professional Water Technologies' line of patent-pending sustainable high performance reverse osmosis chemicals and membrane cleaners, including its flagship product SpectraGuard(TM) SC, an 11x super-concentrated phosphate-free membrane antiscalant. The Agreement reinforces both PWT's current U.S.-based internal sales force covering the EMEA market and its current distributors in the region. The terms of the Agreement remain confidential.Prospective disclosuresAbout H2O Innovation

Contacts: Source: H2O Innovation Inc. / www.h2oinnovation.com Guillaume Ducharme 1 418-928-0234 guillaume.ducharme@h2oinnovation.com

NanoH2O, Inc. Selected by The Artemis Project™ as a 2011 Top 50 Water Company

NanoH2O only reverse-osmosis company recognized by The Artemis Project two years running

“We are honored to be the only reverse osmosis membrane company recognized by the Artemis Project for the second year in a row,” said Jeff Green, CEO of NanoH2O, Inc. “Addressing water scarcity through reverse osmosis desalination has long been challenged by high energy costs. Our patent-pending technology, which encapsulates benign nanoparticles into industry-proven polymer membrane material, significantly improves RO membrane efficiency and lowers energy consumption. With the recently announced commercial launch of our membrane technology, we are very optimistic about the potential impact of our technology on the overall desalination industry. We are grateful to be part of the Artemis Top 50 and to be associated with the Artemis Project as they promote solutions to address global water challenges.”About The Artemis Project:Please visit www.theartemisproject.com/competitionpage.html for a full list of the 2011 Top 50 Water Companies Competition winners.The Artemis Project™ is a boutique consulting practice dedicated to helping companies thrive in a world of increasing water scarcity. We operate at the intersection of corporate strategy, advanced technology, investment and policy. We work with global corporations to achieve a sustainable competitive advantage through operational excellence in water management and assist advanced water technology companies in maximizing the value they bring to their customers. For more information visit: www.theartemisproject.com."The Artemis Top 50 is the water industry’s benchmark for recognizing innovation that will matter. It identifies the entrepreneurs that are applying technology to meet the world's water challenges,” noted Laura Shenkar, principal at The Artemis Project. “Water tech is quickly becoming an engine for economic development and job growth. With these awards, we strive to identify the companies offering the most promising technologies coming onto the market.”EL SEGUNDO, Calif. -- NanoH2O, Inc. today announced that it has been chosen for the second year in a row by The Artemis Project™ as a Top 50 Water Companies Competition winner.About NanoH2O, Inc.Laura Shenkar’s bio: http://theartemisproject.com/about-us/management-bio/Links in this release:The Artemis Project: http://theartemisproject.com/NanoH2O, Inc. is a global provider of reverse osmosis (RO) membranes that change the fundamental economics of desalination. Based on breakthrough nanostructured materials and industry-proven polymer technology, thin-film nanocomposite (TFN) membranes improve desalination energy efficiency and productivity. Exhibiting the highest permeability (flux) on the market, NanoH2O’s reverse osmosis membranes maintain industry-standard salt rejection while purifying water from a broad range of sources. Designed to fit into new and existing desalination plants worldwide, NanoH2O’s membranes are at the forefront of combating critical water scarcity issues. NanoH2O is the 2010 Wall Street Journal Innovation Award winner in the environment category. For more information, visit www.nanoh2o.comOntario H2O Summit: http://h2o.ocediscovery.com/en/default.aspx

NanoH2O, Inc. is a global provider of reverse osmosis (RO) membranes that change the fundamental economics of desalination. Based on breakthrough nanostructured materials and industry-proven polymer technology, thin-film nanocomposite (TFN) membranes improve desalination energy efficiency and productivity. Exhibiting the highest permeability (flux) on the market, NanoH2O’s reverse osmosis membranes maintain industry-standard salt rejection while purifying water from a broad range of sources. Designed to fit into new and existing desalination plants worldwide, NanoH2O’s membranes are at the forefront of combating critical water scarcity issues. NanoH2O is the 2010 Wall Street Journal Innovation Award winner in the environment category. For more information, visit www.nanoh2o.com

Reverse osmosis technology helps optimize phosphate mine performance

PotashCorp's Aurora phosphate mine, in Beaufort County. NC, operates four low pressure boilers and four high pressure boilers to meet its process steam requirements. Maintaining these boilers is critical to meeting production demands.

During initial testing, the pilot unit's silt density index (SDI) test apparatus lost flow within five minutes of operating due to particulate fouling, and membrane performance snowed poor results. It was subsequently determined that the raw process water contained very fine particulates (98 percent less than 2-micron) that flowed through the multimedia filters and softeners, fouling the RO membranes.The concentrate/reject of the units operating in the first pass mode, which is highly concentrated in TDS. is sent to waste. This reject is also captured in the backwash tank for the MMF/softener backwash. The concentrate of Unit D. if operating in second pass mode, is recovered and sent to the first pass RO feed.In effect. Potash Corp-Aurora operates a twostage RO in which two RO systems are running in series with the permeate of the first acting as the feed to the second. Staged or series RO operation is typically done when a single-stage RO system does not produce the required quality of product water. For Potash Corp-Aurora. two-stage RO is justified because the additional expenses of operating the second RO system is lower than alternative forms of polishing the first-stage RO permeate to reach a higher quality of final product water.Processing phosphate ore into phosphoric acid requires large amounts of sulfuric acid and steam. Ore is mined from the phosphate deposit with large bucket excavators after 9 to 30 m (30 to 100 ft) of overburden is removed. The phosphate ore is mixed with water to make a slurry that is pumped to the mill. Elemental sulfur is burned in the presence of air to make sulfuric acid. This process is highly exothermic and boilers produce steam while cooling the process. The phosphate ore is reacted with sulfuric acid and the resulting products are refined into different grades of phosphoric acid for fertilizers, feed stock and food additives.System overviewTo ensure the new pretreatment system would meet boiler feed water requirements, mine officials teamed with Crown Solutions, a business unit of Veolia Water Solutions & Technologies, to conduct testing using a pilot trailer custom built for this specific application. The 5.7-L/min (1.5gpm) pilot reverse osmosis system was scaled to the project, to precisely match the hydraulics of the proposed full-scale system. Operating at only 5.7 L/min (1.5 gpm), the pilot system was designed with the same hydraulic flow rates across the multimedia filters and the softeners as the proposed full-scale system.The final results of the eight-week pilot test showed good filtration results, good operation of the water softener and good operation of the membrane system. The RO system produced high quality water, with the operation showing no signs of fouling or scaling. Based on the pilot results, the mine gave the green light for the installation of the full-scale RO system.The Aurora phosphate operation is a subsidiary of the Potash Corporation of Saskatchewan (PotashCorp). The mine is the largest vertically integrated phosphate mining and chemical plant in the world. The facility produces sulfuric acid on site, which is reacted with the phosphate rock to produce phosphoric acid for use as feedstock for phosphate products. The operation has an annual capacity of 6 Mt/a (6.6 stpy) of phosphate rock, 1.2 Mt/a (1.3 million stpy) of phosphoric acid and 181 kt/a (200,000 stpy) of feed phosphate. Steam is generated as part of the sulfuric acid production process. It is also used in the generation of electrical power for both the plant and resale.Water from the surge tanks is then pumped to five 2.4-m (96-in.) multimedia filters with a flow capacity of 29 L/sec (460 gpm) per filter. The down-flow multimedia filtration system is designed to remove total suspended solids (TSS) from the DWP makeup water. All filters run simultaneously in automatic mode. When this system goes into a backwash sequence, RO reject water from a backwash water storage tank is used for backwashing. The use of RO reject for multimedia filter backwashing optimizes water usage and minimizes the virtual water footprint.World's largestUpstream of the multimedia filtration, coagulant and sodium hypochlorite are fed into the raw water at two surge tanks. These are converted, old warm lime softening vessels with about 76 L/sec (1.200-gpm) nominal capacity each. Sodium hypochlorite is used as a biocide to destroy any biological contaminants in the feed water and minimize the ability for microorganisms to grow within and contaminate the water treatment system.Once a specialized blend of coagulants was developed and used, the pilot system significantly lowered SDIs to the 0.5 range. Reverse osmosis with an SDI below 3 is considered acceptable, so an SDI of 0.5 was a significant improvement.The softening resin is also a specialized resin - a shallow shell technology (SST) resin ? by Purolite resin company. The polystyrene resin keeps ion exchange sites to the outer 60 percent of the resin beads, which allows for more efficient regenerations and lower salt usage compared with other more conventional resin types.Plant operators at the mine were challenged with boiler teed water that was high in silici and other contaminants. As a result, boiler operations were experiencing difficult, labor-intensive operations and equipment deterioration. This resulted in higher operating costs and diminished processing performance. The facility was operating an aged boiler feedwater pretreatment system that included warm lime softening followed by pressure filtration and a cation/anion/mixed bed demineralizer system. The demineralizer required frequent regeneration and chemical usage was high and costs were difficult to predict.The RO system is designed to operate as a single and double pass system. All four RO units have a 16:8 array and 144 membranes. Units A. B and C are single pass units. They are always fed with soft water from the upstream softeners. Unit D can operate in both first pass mode (fed water from the softeners) or second pass mode. If Unit D acts as a second pass unit, permeate off the first pass feeds the second pass and produces high quality water.Depressurized well water (DPW water), used for plant utility water and boiler makeup, is very high in silica, in the range of 60-70 ppm. Silica can form scale at pressures below 600 psig. Above 600 psig, silica starts to volatize, carrying over with steam to potentially form deposits on downstream equipment and processes.The filtered water flows to the softener system, which includes seven softeners, each with a flow rate of 21 L/sec (328 gpm). The system is designed to automatically manage the number of softening units online, based on the number of reverse osmosis units online in standard automatic operation. During regeneration, brine is injected into the system to reverse the ion exchange process. The system includes the ability to use brine reclaim where a significant portion of the brine waste is recaptured and sent to a brine reclaim tank to be used in future regenerations. This lessens the amount of virgin brine required for the process and further reduce the water needed to operate the process.RO units A. B and C. acting as first pass, have a designed recovery rate of 70 percent. RO Unit D, when acting in second pass mode, has a designed recovery rate of 90 percent. A major portion of the first pass water is process water used in Potash Corp-Aurora's low-pressure boilers. Second pass RO water is used for high purity processes and in the plant's high-pressure boiler. In addition to filter and softener backwash. RO reject water can be used for softener regeneration and cooling tower makeup.The new boiler feed water pretreatment system includes multimedia nitration (MMF), ion exchange softening and reverse osmosis. DPW water for plant utility water and boiler makeup is pumped out of the mine from deep wells at roughly 145 L/sec (2,300 gpm).

In effect. Potash Corp-Aurora operates a twostage RO in which two RO systems are running in series with the permeate of the first acting as the feed to the second. Staged or series RO operation is typically done when a single-stage RO system does not produce the required quality of product water. For Potash Corp-Aurora. two-stage RO is justified because the additional expenses of operating the second RO system is lower than alternative forms of polishing the first-stage RO permeate to reach a higher quality of final product water.

Improve Health Through Reverse Osmosis - Does It Really Work?

Have you heard that you can improve health through reverse osmosis and want to determine if it is really true or not? Then you need to know some important information about this so you can decide if this is something that will help you improve your health.

- LeadThis process will be able to remove most of the impurities and contaminants from the water you drink so you have safer water. One reason that reverse osmosis is good for improving your health is because it removes bacteria and pyrogens along with other bad things for your health from the unfiltered water.Reverse osmosis is a process of water filtration or purification where molecules of water will be forced using pressure through a membrane of plastic. This is where most of the impurities or contaminants are filtered out and will be directed to a drain while the filtered water will be kept in the holding tank.- PesticidesInstalling one of these systems into your home is very easy to do for anyone. Once it is properly installed you can expect to have the system remove up to 99% of the water impurities that can be found in unfiltered water.Most of the sicknesses that people can get are carried in the water supply that people drink. A sad fact is that most people don't realize that the water they are drinking could be a big factor in the sickness they have so they never change the water they drink.- AsbestosNow one last way that these systems will help improve your health is by using a method known as submicron filtration of water. This will reduce the amount of many different things in the water including:If the water you drink has not been filtered or purified then you are putting yourself at risk for getting a sickness. The more unclean water you drink the more likely your chances are of getting sick from it.- Cysts- Volatile organic chemicalsMost people don't realize that drinking water that is polluted has been linked to causing birth defects and even learning problems in kids. So children will definitely benefit from reverse osmosis to help keep them healthier.Now that you know this important information about improving health through reverse osmosis you can see why so many people say it is true. If you are serious about improving your health then you have nothing to lose by getting your own system and everything to gain but especially better health.

Now that you know this important information about improving health through reverse osmosis you can see why so many people say it is true. If you are serious about improving your health then you have nothing to lose by getting your own system and everything to gain but especially better health.

Reverse Osmosis Water System Units-Is Reverse Osmosis the Best Choice?

Is reverse osmosis the best choice for a water filter system? What other water purifier systems are there that may be as good or better than reverse osmosis? This article will answer those questions so you can make the best choice for you and your family.

Best Choice for Your HealthSome of the newer reverse osmosis water units include a carbon filtration step. That was a good decision, but why then do you need the reverse osmosis step? If you have the right purifier, you don�t.A Better Choice is AvailableReverse OsmosisMinerals Are Necessary for Good HealthReverse osmosis water units remove lead particles larger than a micron. Ions of lead that are smaller can only be removed through an ion exchange system.Reverse osmosis systems work by forcing contaminated water through a semi-permeable membrane. If the pores of the membrane are small enough (below 1 micron), things like dirt, lead, cysts, minerals and anything larger than a micron in size will be removed.With ion exchange tiny particles of lead and copper are removed from the supply by �exchanging� them for potassium and sodium particles or ions. Potassium and sodium are the two most important electrolytes for maintaining good hydration.Reverse osmosis systemes remove minerals and electrolytes, so the water tastes stale and is not good for your health. With sub-micron filtration and ion exchange, you can remove any particles of lead that may be present in your water, but not all of the trace minerals that taste good and help the body maintain its electrolyte balance. If you are using Reverse Osmosis or even after reading this, continue to use RO, please take a multi-mineral or multi-nutrient tablet.Toxic Lead Removal is VitalBiggest AdvantagePrice is not a factor when we talk about protecting our family�s health. If reverse osmosis water units were the only way to do that, it wouldn�t matter how much they cost. But, there are less expensive more efficient devices available, today.How RO WorksFor more detailed information on the best water filter system, please see my website listed below. (Don't be surprised if RO companies comment negatively or disagree with this. The facts speak and you just read them. It shows that they have a problem to defend.) The best choice is not a reverse osmosis unit. Please see my website listed below for a better choice than reverse osmosis.Lead is a toxic heavy metal that is often found in tap water, because the material was used to make the distribution pipes that run from the treatment facility to your home. It causes health problems for the young and old alike.Other purifiers trap the contaminants in an enclosed cartridge, but every ounce of water that comes into your house is cleaned. None is wasted. Find out if you truly need reverse osmosis water units, before you buy them. I found a much better option that outperforms reverse osmosis by a country mile.Don't Let RO Companies Fool YouThe biggest disadvantage of reverse osmosis systems, to many of us, is the wastewater created. Each and every design they have come up with wastes gallons of water. It goes down the drain and back into the environment.Reverse osmosis water system units can be expensive, wasteful and usually unnecessary in most applications, especially in the home. There are less expensive and more efficient water filtering systems. Keep reading and I will tell you what is.Reverse osmosis (RO) water units were all the rage at one time, but their popularity has diminished for a number of reasons. Manufacturers are still trying to keep reverse osmosis systemes in the public eye by creating smaller, easier to operate units, but they are still expensive, wasteful and mostly unnecessary. Here's why.That sounds pretty good, until you realize that the traces of chemicals that exist in our water today are smaller than a micron. So, they will pass right through the membrane. They can only be trapped by granulated carbon and blocks made of carbon and other filtering media.There are new purifiers that include sub-micron filtration, which is similar to reverse osmosis systemes, but far less expensive. They also, of course, include carbon filters and blocks, so all chemicals are removed, but what about lead.

For more detailed information on the best water filter system, please see my website listed below. (Don't be surprised if RO companies comment negatively or disagree with this. The facts speak and you just read them. It shows that they have a problem to defend.) The best choice is not a reverse osmosis unit. Please see my website listed below for a better choice than reverse osmosis.