Exhibit 21.1

Subsidiaries of Mueller Water Products, Inc.

Entity	State of Incorporation/Organization	Doing Business As
Anvil 1, LLC	Delaware	N/A
Anvil 2, LLC	Delaware	N/A
Anvil International, L.L.C.	Delaware	Anvil International (N.H.)
Anvil International, LP	Delaware	Anvil International Limited     Partnership of Delaware Anvil International, LP of     Delaware
AnvilStar, LLC	Delaware	N/A
Fast Fabricators, LLC	Delaware	N/A
Henry Pratt Company, LLC	Delaware	N/A
Henry Pratt International, LLC	Delaware	N/A
Hersey Meters Co., LLC	Delaware	Hersey Meters Co. of Delaware,     LLC
Hunt Industries, LLC	Delaware	N/A
Hydro Gate, LLC	Delaware	N/A
J.B. Smith Mfg Co., LLC	Delaware	N/A
James Jones Company, LLC	Delaware	James Jones Company of     Delaware, LLC
Jingmen Pratt Valve Co., Ltd.	People’s Republic of China	N/A
MCO 1, LLC	Alabama	N/A
MCO 2, LLC	Alabama	N/A
Milliken Valve, LLC	Delaware	N/A
Mueller Canada Holdings Corp.	Canada	N/A
Mueller Canada Ltd.	Canada	Mueller Flow Control Canvil Anvil Canada
Mueller Co. Ltd.	Alabama	Mueller Co. Ltd., L.P. Mueller Co. Ltd. (LP) Mueller Flow, LLC
Mueller Financial Services, LLC	Delaware	N/A
Mueller Group Co-Issuer, Inc.	Delaware	N/A
Mueller Group, LLC	Delaware	N/A
Mueller International Finance, Inc.	Delaware	N/A
Mueller International Finance, L.L.C.	Delaware	Mueller International Finance     (N.H.)
Mueller International, Inc.	Delaware	N/A
Mueller International, L.L.C.	Delaware	Mueller International (N.H.)
Mueller Service California, Inc.	Delaware	N/A
Mueller Service Co., LLC	Delaware	N/A
United States Pipe and Foundry Company, LLC	Alabama	N/A