ESD offers water filters that produce top quality drinking water for about $0.03 per gallon. Try these combination KDF and carbon water filters on your own city tap water system.
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Standard Undersink ~ Standard Undersink w/10" Pre-filter ~ Deluxe Undersink w/ 10" Pre-filter
Replaceable Cartridge Undersink ~ Replaceable Cartridge Undersink w/ Pre-Filter
Typical Cross Section


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Deluxe Undersink Water Filter 
Easily the most popular undersink retail unit on the market today! Ideal upgrade from the NSA 100S/SX or the NSA 3000HM if you are on municipal tap water.

H2O-US4 
 
5 stage filtration and purification system. 5 stage filtration and purification system 
Easy installation undersink water filters. Installs out of sight under the sink.  Easy installation kit included.
Attractive chromed gooseneck purified water faucet included. Hooks up to separate chromed long reach faucet (included)
Installation of these water filters can be inline or to the drinking water faucet. Available In-line for hook up to sink faucet 
Safe, secure, dependable threaded compression fittings. Safe, secure, dependable threaded compression fittings 
Bacteriostatic media will not allow bacterial growth in the filter media bed. Bacteriostatic media: Prevents bacteria growth 
Removes bad tastes, odors, chlorine and other chemicals. Improves taste, eliminates odors, removes color 
Removes hundreds of chemical contaminants like THMs, pesticides, herbicides. Removes hundreds of contaminants 
Ideal for city tap water applications or on private wells after the chlorinator. For use on treated potable water only
Purifies a whopping 35,000 gallons of pure drinking water. Expected Max. Capacity: 35,000 gallons 
Manufacturer's prorated warranty. Manufacturer's prorated warranty 

   
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"We made the switch from the NSA under-sink to your US4 and
are happy to report that we love it. We loved our NSA filter
while it lasted, but yours is waaaay better." -- Molly Keene, WV

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Lower 48 USA Orders Ony

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Regular $239.00
On Sale NOW!

US4

With complete installation kit: saddle valve, fittings, chromed gooseneck faucet, neoprene water lines.
Qty:  at only $208.00 ea.

US4-IL

With "union kit" (no chromed gooseneck faucet or saddle valve) and neoprene lines, for In-Line connection to kitchen sink faucet.
Qty:  at only $197.00 ea.

US4-R

Replacement filter only. No accessories, water line or hardware included.
Qty:  at only $194.00 ea.

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Or Call for a FREE 15 min.
Water Treatment Consultation
1-304-721-8380

Or Order by Phone
LOWER 48 USA
ORDERS ONLY
TOLL FREE
1-877-814-3416
Weekdays 8am - 6pm Eastern
The Solution to Water Pollution: Our systems contain a patented media, KDF® (U.S. Patent 4,642,192), which has been tested to drastically reduce or effectively remove: Chlorine, Lead, Arsenic, Barium, Cadmium, Chromium, Selenium, Mercury, Iron and other metals that may be present in the water.  KDF® is listed under NSF standard 61 (health effects) for water treatment plant applications.

The Coconut Shell Granular Activated Carbon is used to improve the taste and odor and to remove: Chlorine, THMs, PCBs and hundreds of other organic contaminants that may be present in the water.


 
Expected Max. Capacity: Up to 35,000 gal. 132,475 lts.
Recomm. Flow: 1  to 2 gpm.  3.8 to 7.6 lts./min.
Height: 16.5"   . 41.9 cm. 
Width: 5"Dia 12.7cm.
Shipping Wt.: 11 lbs.  5 Kgs.
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