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Registered Water Treatment Device Details

WTD #: 20878    Manufacturer #: 10173    Name: A. O. Smith Corp.

Registration Status History
Status Status date Reg. year Fee Insert date
Renewal 06/04/2021 2022 400 06/07/2021
Renewal 06/10/2019 2021 0 06/12/2019
Initial 11/20/2018 2019 0 11/20/2018
Models - Sold under these trade names
Primary Model # Model name Inactive date
AO-US-RO-4000 The Clean Water Filter w/Reverse Osmosis Boost
Replacement Parts
Description Insert date Inactive date
AO--RO-RM-R RO membrane 11/20/2018
Ao-4000-Carbon cartridge 11/20/2018
Technologies
Description Insert date Inactive date
carbon block 11/20/2018
reverse osmosis 11/20/2018
Contaminants
Description Category Approval date Laboratory Insert date Inactive date
Arsenic (Penta.)<=300 ppb Inorganic 11/20/2018 NSF International 11/20/2018
asbestos Radiological and Physical 11/20/2018 NSF International 11/20/2018
barium Inorganic 11/20/2018 NSF International 11/20/2018
chromium (hexavalent) Inorganic 11/20/2018 NSF International 11/20/2018
chromium (trivalent) Inorganic 11/20/2018 NSF International 11/20/2018
copper Inorganic 11/20/2018 NSF International 11/20/2018
cysts Microbiological 11/20/2018 NSF International 11/20/2018
fluoride Inorganic 11/20/2018 NSF International 11/20/2018
lead Inorganic 11/20/2018 NSF International 11/20/2018
nitrate & nitrite Inorganic 11/20/2018 NSF International 11/20/2018
radium 226/228 Radiological and Physical 11/20/2018 NSF International 11/20/2018
selenium Inorganic 11/20/2018 NSF International 11/20/2018
turbidity Radiological and Physical 11/20/2018 NSF International 11/20/2018