Certified Inspectors

Testing a dual check with atmospheric vent
Testing a double check assembly

If you are interested in adding your name to the DC Water list of certified testers and have completed the backflow certification course, you may submit your credentials to the DC Water Cross-Connection Control Program.



DC Water Cross-Connection Control Program
Drinking Water Division, Department of Water Services
3900 Donaldson Place, NW
Washington, DC 20016
Email: crossconnection@dcwater.com
Fax number (202-364-3121)

List of Certified Testers

Company Certified Tester(s) Contact Information
A.H. Jordan Plumbing & Mechanical
1818 New York Av, Ste. 202
Washington, DC 20002
  • Anthony H. Best
  • Malcom Douglass Jordan
 202-529-1058 (Office)
202-529-2868 (Fax)
Ahjordan_plumbing@verizon.net
Al Gleeson Electrical Company, Inc.
4710 Upshur Street
Bladensburg, MD 20710
 Mike Vance 301-277-4680 (Office)
301-277-0877 (Fax)
Apex Plumbing
P.O. Box 4025
Woodbridge, VA 22194 		Ralph Beall 202-409-8246 (Cell)
703-221-5791 (Fax)
Ralph.beall@verizon.net
Azmo Mechanical, Inc.
447 South Washington Ave.
Piscataway, NJ 08854 		Nick Azmo 732-424-9700 (Office)
732-424-9345 (Fax)
732-690-8442 (Cell)
Nick@AzmoMechanical.com
www.NJbackflow.com
Backflow Technology
PO Box 1575
Sterling, VA 20167
  • Philip Barbe, Jr.
  • Brandon Burriss
  • Geoffrey Vance
  • Mathew Vance
 703-450-5898 (Office)
703-430-4108 (Fax)
Calvert-Jones
5703 Edsall Road
Alexandria, VA 22304
  • Christopher Southerland
  • Burnell Walker
 703-370-8001 (Office)
703-370-8339 (Fax)
Chesapeake Cross-Connection James Yacovissi 410-923-3075
Cranford Mechanical
5518 Tuxedo Rd
Cheverly, MD 20781
  • George R Cranford
  • Jaime Hinojosa
  • Mitzi Kinzer
  • George McDonald
  • Leon Mejia
  • John Nielson
  • Roland Williams
 301-773-0170
CRW Mechanical
5807 Ellerbie Street
Lanham, MD 20706 		Arthur C. Heuer 301-918-0056 (Office)
301-459-0517 (Fax)
FreeLine, Inc.
92 Ritchie Rd
Capitol Heights, MD 20743 		Che Gomez 301-499-0987 (Office)
301-499-0640 (Fax)
General & Mechanical Services
1007 Skidmore Dr
Annapolis, MD 21409 		Jown W. Miller, Jr. 410-349-4070 (Office)
410-349-4076 (Fax)
Superior Mechanical Services
6655 Mid Cities Avenue
Beltsville, MD 20705
  • Andrew Weir
  • Alan Dorfman
  • Ryan Burroughs
  • Lee Lutz
  • Richard Arnold
  • Dave Collinsworth
  • Billy Williams
  • Steve Barthlow
  • Mark Hopkins
 301-931-0100 (Office)
301-931-0800 (Fax)
James L. Madden
PO Box 8247
904 Philadelphia Ave
Silver Spring, MD 20907 		Robert W. Parsons 301-587-1710 (Office)
301-587-1638 (Fax)
JBI Services
1612 Colesberg St
Silver Spring, MD 20905 		Richard Phillips 443-864-9420 (Cell)
703-451-9021 (Office)
L.G. Knoch Jr
1393 OGG Drive
Westminster, MD 21157 		Lawrence Knoch, Jr 410-876-6920 (Office)
410-848-9529 (Fax)
LEG Plumbing Contractor, LLC.
1016 8th Street
Laurel, MD 20707 		Yolanda Gary 301-604-2013
Maryland Plumbing & Heating
7610-X Rickenbacker Dr
Gaithersburg, MD 20879 		Sami Mustafa 301-990-2891 (Office)
301-208-3526 (Fax)
www.marylandplumbingandheating.com
Magnolia Plumbing 600 Gallatin St, Ne
Washington, DC 20017
 Dominic Magnolia
 202-829-8510 (Office)
202-529-5632 (Fax)
dmagnolia@magnolia-companies.com
Mallick Plumbing and Heating, Inc
8010 Cessna Avenue
Gaithersburg, Maryland 20879
  • Mark R. Hopkins
  • Mark Tracy
  • Robert Breen
 301-840-5860 (Office)
301-840-5878 (Fax)
Mech-Flow Corporation
9604 Norfolk Ave.
Laurel, MD 20723 		Andrew Migasiuk 301-490-7825
Patriot Backflow & Gas, Inc.
31 Tenbury Rd
Lutherville, MD 21093 		Russell Mellinger, Jr. 443-508-6157 (Office)
410-558-6513 (Fax)
PennMarVA, Inc.
7501 Rhode Island Ave
College Park, MD 20740 		Carroll Mathews 301-864-0303 (Office)
301-779-2407 (Fax)
Petrlik Plumbing, Inc.
6835 Ingraham St
Riverdale, MD 20737 		Robert Petrlik 301-459-0935 (Office)
240-286-2987 (Cell)
bobpetrlik@erols.com
Plumb Right Plumbing
9315 Mathis Ave
Manassas, VA 20110
 Shellby Figaroore, Jr 202-234-4400 (Office)
703-393-1270 (Fax)
www.oneplumbrightplumbing.com
Real Plumbers
73221 Livingston Road
Oxon Hill, MD 20745
  • E. David Warner
  • Vladislav Krestan
  • Kevin P. Johnson
 301-567-2001 (Office)
301-567-2165 (Fax)
Rasco, Inc.
1635-2 Woodside Drive
Woodbridge, VA 22191
  • Jory A Cox
  • Robert L Garrison
  • Alden-John W Wangner
 703-643-2952
Salco Mechanical Contractors.
615 S. Stonestreet Av
Rockville, MD 20850 		Stephen J. Exlbert 301-309-1800 (Office)
301-309-3811 (Fax)
Thornton Mechanical Contracting
120 West Hampton Ave.
Capitol Heights, MD 20743 		Robert Norton, Jr. 301-350-5000 (Office)
301-350-3609 (Fax)
Tyler Mechanical Contracting
10087 Tyler Place, #2
Ijamsville, MD 21754
  • Curtis Bedsaul
  • Will Horning
  • Randy Nicklas
  • William Reel
 301-864-8696
Virgina Backflow Technologies, Inc.
22627 Upperville Heights Square
Ashburn, VA 20148 		Keith D. Sellers 571-309-9987 (Office)
703-858-0023 (Fax)
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