SoftPlus Water Softeners Iron Rival Iron Reduction Systems ecoTAC Hard Water Conditioning Systems

Under Sink Water Filter

Pentek / US Filter US-1500 (a.k.a American Plumber Model WLCS-1000) w/ Electronic Filter Life Monitor

Note: This system is also sold under the Pentek US-1500, US Filter US-1500 and American Plumber Model WLCS-1000 brand and model names. The American Plumber WLCS-1000 and Pentek / US Filter US-1500 are absolutely identical units. American Plumber WLCS-1000 (US Filter US-1500) under sink water filter

NSF-certified under-sink water filter with electronic filter life monitor priced at only US$139.95!

The Pentek / US Filter US-1500 (American Plumber WLCS-1000) is simply the best value in an under-sink water filter system available anywhere! We guarantee it! If you find a cheaper price on an NSF-certified under sink water filter with comparable features and capabilities, and made in the USA, we will beat it! Call us toll free at 1-866-376-2690.

The Pentek / US Filter US-1500 (American Plumber WLCS-1000) offers dual-cartridge filtration in a compact, sleek under-sink design. It is an excellent choice for use in homes, cottages, recreational properties, and RVs! The US-1500 under sink water filter provides premium quality drinking water with less hassle and cost than bottled water - only pennies per day! No under sink water filter system on the market offers such an attractive bundle of features at such a reasonable price.

This unit is tested and certified by NSF International to ANSI/NSF Standard 42 for the reduction of taste and odor, chlorine, and particulate Class 1, and Standard 53 for cyst, lead, asbestos, mercury, turbidity, and volatile organic compound (includes pesticides, herbicides, trihalomethanes, and a wide range of other organic chemicals) reduction. The Pentek / US Filter US-1500 (American Plumber WLCS-1000) features two specialty activated carbon cartridges, including one rated at 0.5 microns for the removal of waterborne cysts like cryptosporidium and giardia (Beaver fever), as well as fine particulates.

For more information of the removal/reduction of various contaminants by activated carbon filtration, please CLICK HERE.

Moreover, the Pentek / US Filter US-1500 (American Plumber WLCS-1000) under sink filter system includes an electronic filter life monitor! The monitor will light up and beep to let you know when it is time to change the filters. The filter life monitor is powered by a 9 volt battery (included). The housing includes a convenient built-in mounting bracket and the system comes complete with an attractive lead-free chrome-finished long-reach faucet, a handy filter housing wrench, water line, and all other required installation hardware.

Key Features:

  • NSF certified
  • cerified water treatment device under the California Department of Public Health's Drinking Water Program
  • electronic filter life monitor beeps when cartridge needs to be changed, and lights change color to indicate relative filter life remaining
  • quick-connect fittings for easy installation
  • space-saving compact design
  • 0.5 micron nominal filtration

This system is designed for use on all chlorinated and non-chlorinated potable water supplies. It is an excellent choice for most homes. If you do not receive your water from a municipal water system (you get your water from a well, lake or other non-treated source), you should have your water tested to ensure it is biologically safe (free of bacteria, viruses, and other harmful microorganisms) before using this filter as your only water treatment. If your water is biologically contaminated, you should consider a whole-house ultraviolet purifier in addition to this filter unit to kill any remaining microorganisms.

Operating Specifications:

Temperature: 40-100F (4-38C)
Water Pressure: 30-125 psi
Max. Rec. Turbidity: 5 NTU
Service Flow Rate: 0.6 gallons (2.3 L) per minute
Filter Life: 1,000 gallons (3,785 L) - about 12 months
Dimensions: 9.18 inches x 4.70 inches x 12.72 inches
Weight: 6 lbs. (filled with water)


The filtration unit mounts under your sink, out of sight. Water supply is gained by attaching a simple assembly to your cold water supply pipe (copper or plastic). You will have to drill a hole in your countertop or sink frame to attach the attractive chrome-finished long-reach faucet. It is a relatively easy do-it-yourself project, or if you prefer, you can have it installed by a handyman or plumber. The unit includes all installation hardware and a complete installation guide.


The Pentek / US Filter US-1500 (American Plumber WLCS-1000) is covered by a manufacturer's 1-year limited parts replacement warranty against manufacturing and workmanship defects, including the housings, faucet, fittings, and O-rings (excluding filters), subject to the feed water conditions noted above. For health reasons, we do not accept returns of water filters/systems after they have been installed. If you are in doubt as to which filter is best for your needs, please feel free to call us toll free at 1-866-376-2690.

NSF-Certified Average
Contaminant Reduction:

Test Conditions:

Flow Rate:0.6 GPM
Water Pressure:60 psi
Water Temperature:63-72F
% Reduction:
Particulate (0.5 to 1.0 micron):96%
Lead (pH 6.5 / 8.5):99.3% / 97.6%
Mercury (pH 6.5 / 8.5):88.5% / 96.7%
Chloroform (VOCs):**99.8%

* Cryptosporidium & Giardia
** volatile organic chemicals included by surrogate chemical chloroform - see list below.

Organic Chemical Reduction (99.8%):
Tested by Surrogate Chloroform
alachor artazine
benzene carbofuran
carbon tetrachloride chlorobenzene
chloropicrin 2,4-D
dibromochloropropane o-dichlorobenzene
p-dichlorobenzene 1,2-dichloroethane
1,1-dichloroethylene cis-1,2-dichloroethylene
dinoseb endrin
ethylbenzene ethylene dibromide (EDB)
halocetonitriles (HAN) bromochloracetonitrile
dibromoacetonitrile dichloroacetonitrile
trichloracetonitrile haloketones (HK)
1,1-dichloro-2-propanone 1,1,1-trichloro-2-propanone
heptachlor heptachlor epoxide
hexachlorobutadiene lindane
methoxychlor pentachlorophenol
simazine styrene
1,1,2,2-tetrachloroethane tetrachloroethylene
toluene 2,4,5-TP (silvex)
tribromoacetic acid 1,2,4-trichlorobenzene
1,1,1-trichloroethane 1,1,2-trichloroethane
trichloroethylene trihalomethanes
bromoform bromodichloromethane

Please note: This item is currently sold out and will be out of stock until the manufacturer completes the re-tooling of its factory. However, an alternative system that uses the identical filters is available: the ClearChoice Premium Under Sink Drinking Water Filter (click on the name for info). We apologize for the inconvenience. Replacement filters are still available!

Note: this product is a certified water treatment device under the California Department of Public Health's Drinking Water Program (Certificate Number 04 -1688).

Note: The contaminants or other substances removed or reduced by this water treatment device are not necessarily present in your water.