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Reverse Osmosis Drinking Water System

PureEarth has been offering a complete line of hi-tech home water filters, purifiers, and softeners since 1989 - on the internet since 1996. We're an established, profitable, debt-free company!

We purchase top-quality USA-made components from respected industry-leading suppliers to assemble our reverse osmosis systems. This allows us to sell our reverse osmosis systems at down-to-earth factory-direct prices - UP TO 40% OFF LIST PRICE. There are no "hidden" costs - shipping is FREE on orders of $99 or more (anywhere in continental U.S.), only $8.95 on orders less than $99! For orders to Alaska and Hawaii, call for quote.

Made in the USA

reverse osmosis water purification system - roCertain areas of the country have a high mineral content in their water. When the concentration of these dissolved solids get above 250 mg/l (ppm), the water can take on a bitter taste. Also, many people are concerned about high sodium, fluoride, nitrates, chlorine, chemicals, radionuclides, and even pharmaceuticals and prescription drugs that might be in tap water. Since ordinary filters do not remove minerals from the water, a Reverse Osmosis system is recommended. Reverse Osmosis is a process of forcing tap water through a semi-permeable membrane, leaving dissolved solids and other impurities behind. These impurities are rinsed away, resulting in clean, clear, great tasting water. This same process is used by many of the bottled water companies. Anything made with reverse osmosis water tastes better: coffee, juices, soups, pasta. Ice cubes are clearer and harder and free of "funny taste" (ask for a free ice maker tee fitting when ordering). If you are unsure of your water's mineral content (hardness), call your water department, or call us for a free in-home test strip.

WHY SUCH A HIGH PRODUCTION MEMBRANE? While most reverse osmosis systems use a 10 or 12 gallon per day membrane, we offer 50, 75 or 100 gallon per day production rates. Why? While 12 gallons per day sounds like plenty of water, it's the production time you need to consider: it takes the 12 gallon per day (gpd) membrane over 2 hours to make one gallon of water, while it takes our 50 gpd membrane about 30 minutes to make one gallon, the 75 gpd membrane about 20 minutes to make one gallon and the 100 gpd membrane only 15 minutes (@ 65 psi and 77� F)! Most storage tanks only hold about 2 gallons of water, so you can see that during heavy use times (company) you could be out of water for some time with a slow membrane! The MADE-IN-THE-USA Dow/Filmtec membrane has been certified by the NSF/ANSI 58 for the following contaminants: Arsenic, Barium, Cadmium, Chromium (Hexavalent), Chromium (Trivalent), Copper, Cysts, Turbidity, Fluoride, Lead, Radium 226/228, Selenium, and TDS.

Reverse osmosis systems (MADE in the USA, not just "assembled" in the USA!) are not created equal - here�s what makes our 4-stage system a great choice:

* - Total tank volume, based on industry-standard rating. Actual capacity of any bladder-type storage tank is less than the rated volume. At 60 psi, it is 60% of total; at 50 psi, it is 50% of total; at 40 psi, it is 40% of total.

Reverse osmosis system space requirements: Main unit is 18" tall x 14" wide x 6" deep, storage tank is 11" diameter X 15" tall (a 3' tube connects them - they can be on opposite sides under your cabinet). 5 year warranty on hardware, 2 years prorated on membrane.

COMPARE FEATURES! COMPARE PRICES! You will find our reverse osmosis system to be an outstanding value!


All of our reverse osmosis systems are placed out of the way, under the sink. They connect to the cold waterEZ Faucet Connector line with an "EZ stop-valve connector" (not a leak-prone saddle valve like many competitors) and dispense water through an attractive long reach LEAD-FREE* solid brass premium faucet (not a cheap plastic flip-lever like most of our competitors). Quick-connect fittings make for fast, easy installation. A 1/2" hole is all that is needed for the faucet stud (all series), but a cover plate is included to accommodate larger pre-drilled holes (such as a vegetable sprayer hole).

ALL of our under counter filters include a PREMIUM SERIES chrome upscale faucet  at NO EXTRA CHARGE! This elegant lead-free* solid brass faucet features a smooth quarter turn handle with a ceramic seat for a lifetime of service - no flimsy, cheap plastic flip-handle like most competitors! There is no spring, so the handle stays in the position you place it, like a regular faucet. In addition to the ALL CHROME color scheme (pictured at left), it is available for only $10 more in  BRUSHED NICKEL (stainless steel look), WHITE, ALMOND/BISQUE, BLACK, ANTIQUE BRONZE. It is recommended that you choose the faucet to match the color scheme of your main faucet. Select color choice on order screen. It is 8.75" tall and has a swivel spout with a reach of 5.5".

Faucet style upgrades are available here.

 * - Complies with California Prop. 65 standards






Click here for reverse osmosis membrane test data.
Click here for reverse osmosis installation instructions (in PDF format).
Click here for information on our TDS meter (checks membrane performance).
Click here for information on our colorful 32 oz. Nalgene Water Bottles - take your pure water along!
Click here for information on 2 gallon refrigerator storage bottle.

A California-Certified Reverse Osmosis System is now available.


50 Gallon Per Day Systems (1 gal. in 30 min. @ 98% TDS reduction)

RO-50 PREMIUM SERIES REVERSE OSMOSIS SYSTEM (with Upscale Designer Faucet - 6 color choices): $349.00 with FREE SHIPPING (in continental U.S.)! 30 day money-back guarantee! Select color choice on order page.    

Faucet style upgrades are available here.


75 Gallon Per Day Systems (1 gal. in 20 min. @ 98% TDS reduction)

RO-75 PREMIUM SERIES REVERSE OSMOSIS SYSTEM (with Upscale Designer Faucet - 6 color choices): $359.00 with FREE SHIPPING (in continental U.S.)! 30 day money-back guarantee! Select color choice on order page.    

Faucet style upgrades are available here.


100 Gallon Per Day Systems (1 gal. in 15 min. @ 98% TDS reduction)

RO-100 PREMIUM SERIES REVERSE OSMOSIS SYSTEM (with Upscale Designer Faucet - 6 color choices): $369.00 with FREE SHIPPING (in continental U.S.)! 30 day money-back guarantee! Select color choice on order page.

Faucet style upgrades are available here.


Go HERE to order a TDS meter to monitor membrane performance.


While an reverse osmosis system will produce water at 40 PSI, 60 PSI or above provides optimum water quality and production speed. The 8800 Aquatec Booster Pump is available to increase inlet pressure (includes tank shut-off valve). Only $159.00.


Optional Aquatec Delivery Pump is available for remote installations (such as basements). Only $149.00.

 NOTE: Water hardness of over 10 grains per gallon (170 mg/l) can cause the membrane to fail prematurely - you should consider a water softener as a pretreatment if your water is this hard. Click HERE for more information.

REPLACEMENT CARTRIDGES FOR THE RO-50, RO-75 and RO-100 (and former 150)


Replacement filter set (change every year) includes: SF1 sediment prefilter, CB-10 carbon block prefilter, IL-GAC carbon post filter. RO-FRS - $46.95


Replacement filters: Sediment (at least every year) - SF1 - $5.95.  

Carbon-block prefilter (every year) - CB-10 - $22.00   

Carbon postfilter (every year) - IL-GAC - $19.00  

Optional GAC and Calcite Post Filter Replacement Cylinder (re-mineralizes water) - PRO-POST-CC//KK2551JJ (replace annually) $19.00     


Membrane - 50 gpd (about every 3 years) $49.00      

Membrane - 75 gpd (about every 3 years) $59.00     

Membrane - 100 gpd (about every 3 years) $69.00      

Former encapsulated membrane module (sealed unit, with integrated flow restrictor and check valve). (3-year approx. life)

TFC-75-EB $99     


Housing wrench for pre/post filter - WR-100 - $4.95.  

Notice: consumer is responsible for following any state and/or local regulations and plumbing codes pertinent to the purchase, installation and operation of our products.

For more information, call us
(Monday thru Friday, 9 to 5 eastern time)
at 770-514-8910
 Email: @ (remove spaces)


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