6
PERFORMANCE DATA SHEET
Performance Data Sheet for the A. O. Smith Under Counter Water Filter
Models Replacement Operating pressure range Rated capacity Operating temp. range Rated ow
AO-US-200 AO-US-200-R 20-80 psi
1.40-5.624 kg/cm2
500 gallons
1892 Liters 40-90° F
4.44-32.2° C 0.5 gpm
1.89 lpm
Manufactured by: A. O. Smith Corporation P.O. Box 1597 | Johnson City, TN 37605-1597 | 877.333.71088
Organic chemicals included by surrogate testing
VOCs
(by surrogate testing
using chloroform)
Drinking
water
regulatory
level (MCL/
MAC) mg/L
Inuent/
Unltered
Efuent/
Filtered
Percent
Reduction
alachlor 0.002 0.050 0.001 >98%
atrazine 0.003 0.100 0.003 >97%
benzene 0.005 0.081 0.001 >99%
carbofuran 0.04 0.190 0.001 >99%
carbon tetrachloride 0.005 0.078 0.0018 98%
chlorobenzene 0.1 0.077 0.001 >99%
chloropicrin —0.015 0.0002 99%
2,4-D 0.07 0.110 0.0017 98%
dibromochloropropane (DBCP) 0.0002 0.052 0.00002 >99%
o-dichlorobenzene 0.6 0.080 0.001 >99%
p-dichlorobenzene 0.075 0.040 0.001 >98%
1,2-dichloroethane 0.005 0.088 0.0048 95%
1,1-dichloroethylene 0.007 0.083 0.001 >99%
cis-1,2-dichloroethylene 0.07 0.170 0.0005 >99%
trans-1,2-dichloroethylene 0.1 0.086 0.001 >99%
1,2-dichloropropane 0.005 0.080 0.001 >99%
cis-1,3-dichloropropylene — 0.079 0.001 >99%
dinoseb 0.007 0.170 0.0002 99%
endrin 0.002 0.053 0.00059 99%
ethylbenzene 0.7 0.088 0.001 >99%
ethylene dibromide (EDB) 0.00005 0.044 0.00002 >99%
haloacetonitriles (HAN) Inuent/
Unltered Efuent/
Filtered Percent
Reduction
bromochloroacetontrile —0.022 0.0005 98%
dibromoacetontrile —0.024 0.0006 98%
dichloroacetontrile —0.0096 0.0002 98%
trichloroacetontrile —0.015 0.0003 98%
haloketones (HK) Inuent/
Unltered Efuent/
Filtered Percent
Reduction
1,1-dichloro-2-propanone —0.0072 0.0001 99%
1,1,1-trichloro-2-propanone —0.0082 0.0003 96%
heptachlor (H-34, Heptox) 0.0004 0.025 0.00001 >99%
heptachlor epoxide 0.0002 0.0107 0.0002 98%
hexachlorobutadiene —0.044 0.001 >98%
hexachlorocyclopentadiene 0.05 0.060 0.000002 >99%
lindane 0.0002 0.055 0.00001 >99%
methoxychlor 0.04 0.050 0.0001 >99%
pentachlorophenol 0.001 0.096 0.001 >99%
simazine 0.004 0.120 0.004 >97%
styrene 0.1 0.150 0.0005 >99%
1,1,2,2-tetrachloroethane —0.081 0.001 >99%
tetrachloroethylene 0.005 0.081 0.001 >99%
toluene 10.078 0.001 >99%
2,4,5-TP (silvex) 0.05 0.270 0.0016 99%
tribromoacetic acid —0.042 0.001 >98%
1,2,4-trichlorobenzene 0.07 0.160 0.0005 >99%
1,1,1-trichloroethane 0.2 0.084 0.0046 95%
1,1,2-trichloroethane 0.005 0.150 0.0005 >99%
trichloroethylene 0.005 0.180 0.0010 >99%
trihalomethanes (THMs) Inuent/
Unltered Efuent/
Filtered Percent
Reduction
bromodichloromethane (THM)
0.080 0.300 0.015 95%
bromoform (THM)
chloroform (THM)
chlorodibromomethane (THM)
xylenes (total) 10 0.070 0.001 >99%
NSF/ANSI 42 Min Reduction Overall % Reduction Results
Chlorine Reduction, Free Available <0.5 mg/l 97.66% Pass
Chloramine Reduction, Free Available <0.5 mg/l 97.66% Pass
Particulate Reduction 85% 99.9% Pass
NSF/ANSI 53 Min Reduction Overall % Reduction Results
Cyst Live Cryptosporidium & Giardia 99.95% >99.99% Pass
Mercury Reduction pH 8.5 <2 ug/L >95.8% Pass
Mercury Reduction pH 6.5 <2 ug/L >96.5% Pass
Lead Reduction pH 6.5 <10 ug/L >99.4% Pass
Lead Reduction pH 8.5 <10 ug/L >99.3% Pass
MTBE Reduction <5 ug/L 86.6% Pass
Turbidity <0.5 NTU 99.1% Pass
VOC Surrogate Test 95% 99.4% Pass
Asbestos 99% >99% Pass
Peruorooctanoic acid (PFOA) &
Peruorooctane sulfonate (PFOS) <0.07 ug/L 96% Pass
NSF/ANSI 401 Maximum
Concentration Minimum Reduction Overall % Reduction Results
Atenolol 30 ng/L 94.2% 94.2% Pass
Bisphenol A 300 ng/L 98.80% 98.9% Pass
Carbamazepine 200 ng/L 98.6% 98.6% Pass
DEET 200 ng/L 98.7% 98.7% Pass
Estrone 20 ng/L 96.30% 96.5% Pass
Ibuprofen 60 ng/L 95.3% 95.4% Pass
Linuron 20 ng/L 96.6% 96.6% Pass
Meprobamate 60 ng/L 94.7% 94.7% Pass
Metolachlor 200 ng/L 98.6% 98.6% Pass
Naproxen 20 ng/L 96.3% 96.4% Pass
Nonyl phenol 200 ng/L 97.50% 97.5% Pass
Phenytoin 30 ng/L 95.50% 95.6% Pass
TCEP 700 ng/L 98% 98% Pass
TCPP 700 ng/L 97.8% 97.8% Pass
Trimethoprim 20 ng/L 96.7% 96.7% Pass
System Tested and Certied by NSF International against NSF/
ANSI Standard 42, 53 & 401 for reduction of claims specied
on the Performance Data Sheet and at www.nsf.org.
Filter is only to be used
with cold water.
Filter usage must comply
with all state and local laws.
Testing was performed
under standard laboratory
conditions, actual
performance may vary.
Systems certied for cyst
reduction may be used on
disinfected waters that may
contain lterable cysts.
See owner’s manual for general
installation conditions and
needs plus manufacturer’s
limited warranty.
• All contaminants reduced by this lter are listed.
• Not all contaminants listed may be present in your water.
• Does not remove all contaminants that may be present in tap water.
Testing Performed under NSF/ANSI Standards 42 and 53 and in accordance with the California Department of Health Services Drinking Water Treatment
Device Program. This system has been tested according to NSF/ANSI 42, 53 & 401 for reduction of the substances listed below.The concentration of
the indicated substances in water entering the system was reduced to a concentration less than or equal to the permissible limit for water leaving the
system, as specied in NSF/ANSI 42, 53 & 401.
For use with municipally treated water only. Do not use with
water that is microbiologically unsafe or of unknown water
quality without adequate disinfection before or after the
system. Systems certied for cyst reduction may be used on
disinfected waters that may contain lterable cysts.
COMPONENT
