Certified Backflow Prevention Inspectors

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 Compliance Program
Department of Water Services
3900 Donaldson Place, NW
Washington, D.C. 20016
Phone: (202) 364-3144
Fax number (202) 364-3143
Email: crossconnection@dcwater.com

List of Certified Testers

Company Certified Tester(s) Contact Information
3-D Plumbing & Heating
PO Box 1462
Bowie, MD 20717
Archie Dennis 301-464-8151 (Office)
301-464-6892 (Fax)
mr3d@aol.com
www.3-dplumbing.com
A Advanced / John G Webster Co 
10738 Tucker St
Beltsville, MD 20705
  • Silas Naecker
  • Raymond Powell
  • Jemal Francis
202-783-6100 (Office) 
240-433-1315 (Fax)
Alarm Tech Solutions 
7411 Alban Station Ct, Suite A-102
Springfield, VA 22150
  • Charles W Taylor
  • Gregory Odrzywolski
703-440-8185 (Office) 
703-440-8187 (Fax) 
Dramey@alarmtechsolutions.com
All Mechanical & Plumbing, LLC
P.O. Box 1017
Mechanicsville, MD 20659
John August Fluhart 301-884-6093 (Office)
301-884-3018 (Fax)
240-320-6059 (Cell)
All Seasons Plumbing, Heating & AC Inc
4210 49th St
Bladensburg, MD 20710
Robert A Mongold Jr 301-277-1313 (Office)
301-277-4813 (Fax)
allseasonsplumbers@gmail.com
American Combustion Industries, Inc.
7100 Holladay Tyler Road
Glen Dale, MD 20769
  • Pat Dumpe'
  • James Lathroum
  • Jonas Spangler
  • Blake King
301-779-3400 (Office)
301-779-0425 (Fax)
jlathroum@aciindustries.com
American Masters Plumbing Company LLC
1624 28th St SE Suite 3
Washington, DC 20020
Scott Dickens 301-643-6138 (Office)
American Mechanical Services
13300 Mid Atlantic Blvd
Laurel, MD 20708
  • Mark Williams
  • Brian S. Sullivan Jr.
301-206-5070 (Office)
301-206-2521 (Fax)
rhoover@amsofusa.com
Apex Plumbing
P.O. Box 4025
Woodbridge, VA 22194
Ralph Beall 202-409-8246 (Cell)
703-221-5791 (Fax)
Ralph.beall@verizon.net
Backflow Technology LLC.
P O Box 1575
Sterling, VA 20167
  • Phillip Barbe
  • Melvin Hinton
  • Brandon Burriss
  • Matthew Vance
703-450-5898 (Office)
backflow07@aol.com
Burco Plumbing Corporation
P.O. Box 3024
Prince Frederick MD 20678
James W. Burton 443-532-5253 (Cell)
Capitol Boiler Works.
7921 Woodruff Court
Springfield, VA 22151
  • Karl Oswald
  • Wayne Hedge
  • Chris Day
800-296-6881 (Office) 
dsheppard@capitolboilerworks.com
CRW Mechanical
5807 Ellerbie St
Lanham, MD 20706
Todd Estus 301-918-0056 (Office)
800-394-0056 (Office)
301-459-0517 (Fax)
202-437-7758 (Cell)
toddestus@crwmechanical.com
Dominion Mechanical
5265 Port Royal Rd
Springfield, VA 22151
  • Paul Woody
  • Mondo L. Brooks
703-922-9588 (Office)
info@dominionmc.com
First Call Plumbing
3334 Mt Airy Ct
Davidsonville, MD 21035
  • Kevin Pezzuti
  • Stephen Pezzuti
  • Charles E. Nelson
  • Daryl Lomax
301-261-4605 (Office)
301-261-4557 (Fax)
Harvey W. Hottel, Inc.
189001-A Woodfield Road
Gaithersburg, MD 20879-4717
  • Christopher Robertson
  • Michael Brandon
301-921-9599 (Office)
abarnsley@harveyhottel.com
Heffron Company
4940 Nicholson Court
Kensington MD 20895
Mark Uzarowski 301-816-2088(Office)
301-252-5605 (Mobile)
www.heffroncompany.com
J.P. Seworootor Inc.
5350 Odell Rd 
Beltsville MD 20705
Joshua Masiello 301-595-8900 (Office)
301-937-1636 (Fax)
Jps.inc@verizon.net
James J. Madden, INC.
6872 Distribution Drive
Beltsville, MD 20705
  • Mitchell W. Willett, Jr M
  • Robert Parsons
  • Stuart A Tolley
301-937-1000 (Office)
301-937-3333 (Fax)
hjanoske@jamesjmadden.com
Jones & Wood, Inc
1702 Minnesota Ave SE
Washington, DC 20020
  • Ellis S Jones
  • Alfred Jordan
  • Dwayne C Williams
  • Eric Brooks
  • Jamar Gross
  • Kelvin D Chew
  • Milton L Willett
  • Reginald Berry, Sr
  • Richard Lyon
  • Robert Berry
  • Sheldon Willett
202-678-4035 (Office)
202-678-4038 (Fax)
Jones_wood_inc@yahoo.com
Jones Mechanical LLC
7002 Old Bayside Drive
Chesapeake Beach MD 20732
Jamil S Jones 240-375-7748 (Office)
Meally1@yahoo.com
JPG Plumbing
6700 E Distribution Drive
Beltsville, MD 20705
  • Marc S. Gluck
  • Shawn Higgins
240-241-5060 (Office)
240-241-5055 (Fax)
jgeiling@jpgplumbing.com
KG Johnson Inc
4520 Mack Ave.
Frederick, MD 21703
Dean McMillion 301-698-9805 (Office)
cpfeffer@kgjohnson.com
Kirlin Mechanical Services LLC
515 Dover Rd suite 2700
Rockville, MD 20850
Paul Staiger 301-424-3410 (Office)
301-605-1853 (Office)
240-743-7548 (Cell)
Krick Plumbing & Heating, Co.
5011 46TH Ave
Hyattsville, MD 20781
  • James Grier
  • Richard Grier
  • George McDonald
301-927-5284 (Office) 
301-927-2728 (Fax)
L.E. Diggs Plumbing & Heating LLC
15107 Jerimiah Lane
Bowie, MD 20721
Lagrand E Diggs 301-218-4700 (Office)
301-218-4558 (Fax)
diggsplumbing.com
L.G. Knoch, Jr. Plumbing LLC.
1393 Ogg Drive
Westminster, MD. 21157
Lawrence G. Knoch, Jr

443-398-5640 (cell phone)
igknoch@comcast.net

Lizear & Associates LLC
7610 Rickenbacker Drive
Gaithersburg, MD 20874
Sami Mustafa 301-990-2891 (Office)
samitheplumber@outlook.com
www.call4plumber.com
Mech-Flow Corporation
9604 Norfolk Ave.
Laurel, MD 20723
Andrew Migasiuk 301-490-7825 (Office) 
Andrew@mech-flow.com
Naumann Plumbing LLC
2131 Espey Court Suite 9
Crofton, MD 21114
Michael Naumann 410-451-6199(Office)
Patriot Backflow & Gas, Inc.
31 Tenbury Rd
Lutherville, MD 21093
  • David S Parsons, Snr
  • Russell Mellinger, Jr.
443-508-6157 (Office)
410-558-6513 (Fax)
PC Godaire, Inc.
PO Box 68
Damascus, MD 20872
Daniel Glogg II 301-428-7959 (Office)
Plumb Right Plumbing
9315 Mathis Ave
Manassas, VA 20110
Shelby A. Figaroore, Jr. 703-335-9102 (Office)
703-398-1270 (Fax)
plumbrightplumbing@gmail.com
Potomac Mechanical Contractors, Inc.
18915 Premiere Ct.
Gaithersburg, MD 20879
David R. Bassett 301-590-8164 (Office)
240-620-3562 (Cell)
301-590-8734 (Fax)
www.pmcmech.com
Salco Mechanical Contractors
615 S. Stonestreet Av
Rockville, MD 20850
Stephen J. Exlbert 301-309-1800 (Office)
301-309-3811 (Fax)
Stephen@salcomech.net
United Backflow LLC
P.O. Box 543
Finksburg, MD 21048
Brian Douglass 410-861-5102 (Office)
866-253-6861 (Fax)
www.unitedbackflow.com
W. E. Bowers
12401 Kiln Court
Beltsville,MD 20705
  • Stephen Parreco
  • Michael Hall
  • Greg Guettler
  • Michael Jackowski
  • John Brown
  • Richard Chroniger
  • Thomas R. McDowell
301-419-2488 (Office)
W. L. Gary Company, Inc.
225 Vine St. 
NW Washington, DC 20012
  • William Andrew Fulton
  • Donique L Jones
  • James R Born
  • Shawn M Campbell
  • Randall W Greer
202.723.0676 (Office)
202.723.0409 (Fax)
www.wlgary.com