Performance Data for the Drinking Water System AO-US-RO-4000
Models
Replacement
AO-US-
AO-4000-CARBON
RO-4000
and AO-RO-RM-R
Manufactured by: A. O. Smith Corporation P.O. Box 1597 | Johnson City, TN 37605-1597 | 877.333.71088
Testing performed against NSF/ANSI Standards 42, 53, 58 and 401 and in accordance with the California Department of Health Services Drinking Water Treatment Device
Program. This system has been tested according to NSF/ANSI Standards 42, 53, 58 and 401 for the 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 specified in NSF/ANSI 42,
53, 58, and 401.
NSF/ANSI 42
Chlorine Reduction, Free Available
Chloramine Reduction, Free Available <0.5 mg/l
Particulate Reduction
NSF/ANSI 53
Cyst Live Cryptosporidium & Giardia 99.95%
Mercury Reduction pH 8.5
Mercury Reduction pH 6.5
Lead Reduction pH 6.5
Lead Reduction pH 8.5
MTBE Reduction
Turbidity
VOC Surrogate Test
Asbestos
Perfluorooctanoic acid (PFOA) &
Perfluorooctane sulfonate (PFOS)
Maximum
NSF/ANSI 58
Concentration
Arsenic Pentavalent
0.30mg/L ± 10% 80.0%
Barium
10.0mg/L ± 10% 80.0%
Cadmium
0.30mg/L ± 10% 83.3%
Chromium Hexavalent 0.30mg/L ± 10% 66.7%
Chromium Trivalent
0.30mg/L ± 10% 66.7%
Copper
0.30mg/L ± 10% 56.7%
Fluoride
8.0mg/L ± 10%
Lead
.15mg/L ± 10%
Nitrate/Nitrite
30.0mg/L ± 10% 66.7%
Radium 226/228
25pCi/L ± 10%
Selenium
0.10mg/L ± 10% 50.0%
TDS
750mg/L ± 10%
Turbidity
11 ± NTU
Maximum
NSF/ANSI 401
Concentration
Atenolol
30 ng/L
Bisphenol A
300 ng/L
Carbamazepine 200 ng/L
DEET
200 ng/L
Estrone
20 ng/L
Ibuprofen
60 ng/L
Linuron
20 ng/L
Meprobamate
60 ng/L
Metolachlor
200 ng/L
Naproxen
20 ng/L
Nonyl phenol
200 ng/L
Phenytoin
30 ng/L
TCEP
700 ng/L
TCPP
700 ng/L
Trimethoprim
20 ng/L
• All contaminants reduced by this filter are listed.
• Not all contaminants listed may be present in your water.
• Does not remove all contaminants that may be present in tap water.
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.
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.
Operating
Operating
pressure range
temp. range
40-100 psi
40-90° F
275-689 kPa
4.44-32.2° C
Minimum Reduction Overall % Reduction Results
<0.5 mg/l
97.66%
97.66%
85%
99.9%
Minimum Reduction Overall % Reduction Results
>99.99%
<2 ug/L
>95.8%
<2 ug/L
>96.5%
<10 ug/L
>99.4%
<10 ug/L
>99.3%
<5 ug/L
86.6%
<0.5 NTU
99.1%
95%
99.4%
99%
>99%
0.07 ug/L
95.8%
Minimum
Overall % Reduction Results
Reduction
97.6%
95.2%
95.3%
97.0%
96.6%
96.6%
81 .2%
95.7%
93.3%
96.6%
82.4%
80.0%
80.0%
97.9%
75.0%
95.0%
95.4%
99.1%
Minimum Reduction
Overall % Reduction Results
94.2%
94.2%
98.80%
98.9%
98.6%
98.6%
98.7%
98.7%
96.30%
96.5%
95.3%
95.4%
96.6%
96.6%
94.7%
94.7%
98.6%
98.6%
96.3%
96.4%
97.50%
97.5%
95.50%
95.6%
98%
98%
97.8%
97.8%
96.7%
96.7%
Systems certified for cyst reduction
may be used on disinfected waters
that may contain filterable cysts.
See owner's manual for general
installation conditions and needs plus
manufacturer's limited warranty.
Recovery
Efficiency
Daily
rating
rating
Production (DPR)
29.43%
17.91%
13.32 gallons
50.4 liters
Organic chemicals included by surrogate testing
Pass
VOCs
(by surrogate testing
Pass
using chloroform)
Pass
alachlor
Pass
atrazine
Pass
benzene
Pass
carbofuran
Pass
carbon tetrachloride
Pass
chlorobenzene
chloropicrin
Pass
2,4-D
Pass
dibromochloropropane (DBCP)
Pass
o-dichlorobenzene
Pass
p-dichlorobenzene
1,2-dichloroethane
Pass
1,1-dichloroethylene
cis-1,2-dichloroethylene
trans-1,2-dichloroethylene
Pass
1,2-dichloropropane
cis-1,3-dichloropropylene
Pass
dinoseb
Pass
endrin
Pass
ethylbenzene
Pass
ethylene dibromide (EDB)
Pass
haloacetonitriles (HAN)
Pass
bromochloroacetontrile
Pass
dibromoacetontrile
Pass
dichloroacetontrile
Pass
trichloroacetontrile
Pass
haloketones (HK)
Pass
1,1-dichloro-2-propanone
Pass
1,1,1-trichloro-2-propanone
heptachlor (H-34, Heptox)
heptachlor epoxide
Pass
hexachlorobutadiene
Pass
hexachlorocyclopentadiene
Pass
lindane
Pass
methoxychlor
pentachlorophenol
Pass
simazine
Pass
styrene
Pass
1,1,2,2-tetrachloroethane
Pass
tetrachloroethylene
Pass
toluene
Pass
2,4,5-TP (silvex)
Pass
tribromoacetic acid
1,2,4-trichlorobenzene
Pass
1,1,1-trichloroethane
Pass
1,1,2-trichloroethane
Pass
trichloroethylene
Pass
trihalomethanes (THMs)
bromodichloromethane (THM)
bromoform (THM)
chloroform (THM)
chlorodibromomethane (THM)
xylenes (total)
Drinking
Influent/
water
Unfiltered
regulatory
level (MCL/
MAC) mg/L
0.002
0.050
0.003
0.100
0.005
0.081
0.04
0.190
0.005
0.078
0.1
0.077
—
0.015
0.07
0.110
0.0002
0.052
0.6
0.080
0.075
0.040
0.005
0.088
0.007
0.083
0.07
0.170
0.1
0.086
0.005
0.080
—
0.079
0.007
0.170
0.002
0.053
0.7
0.088
0.00005
0.044
Influent/
Unfiltered
—
0.022
—
0.024
—
0.0096
—
0.015
Influent/
Unfiltered
—
0.0072
—
0.0082
0.0004
0.025
0.0002
0.0107
—
0.044
0.05
0.060
0.0002
0.055
0.04
0.050
0.001
0.096
0.004
0.120
0.1
0.150
—
0.081
0.005
0.081
1
0.078
0.05
0.270
—
0.042
0.07
0.160
0.2
0.084
0.005
0.150
0.005
0.180
Influent/
Unfiltered
0.080
0.300
10
0.070
System Tested and Certified by NSF
International against NSF/ANSI Standards
42, 53, 58 and 401 for the reduction of
the claims specified on the Performance
Data Sheet and at www.nsf.org.
Effluent/
Percent
Filtered
Reduction
0.001
>98%
0.003
>97%
0.001
>99%
0.001
>99%
0.0018
98%
0.001
>99%
0.0002
99%
0.0017
98%
0.00002
>99%
0.001
>99%
0.001
>98%
0.0048
95%
0.001
>99%
0.0005
>99%
0.001
>99%
0.001
>99%
0.001
>99%
0.0002
99%
0.00059
99%
0.001
>99%
0.00002
>99%
Effluent/
Percent
Filtered
Reduction
0.0005
98%
0.0006
98%
0.0002
98%
0.0003
98%
Effluent/
Percent
Filtered
Reduction
0.0001
99%
0.0003
96%
0.00001
>99%
0.0002
98%
0.001
>98%
0.000002 >99%
0.00001
>99%
0.0001
>99%
0.001
>99%
0.004
>97%
0.0005
>99%
0.001
>99%
0.001
>99%
0.001
>99%
0.0016
99%
0.001
>98%
0.0005
>99%
0.0046
95%
0.0005
>99%
0.0010
>99%
Effluent/
Percent
Filtered
Reduction
0.015
95%
0.001
>99%