State by state · 50 states
Who recognizes testers where
Some states certify testers directly; in others, each water purveyor decides which certifications it accepts. Every entry links its official source.
Alabama
purveyor
Alaska
purveyor
Arizona
state · American Backflow Prevention Association (ABPA)
Arkansas
state · ADH Backflow Prevention Assembly Testing Technician license (state exam after an ADH-accredited training program)
California
state · American Backflow Prevention Association (ABPA)
Colorado
state · American Society of Sanitary Engineering (ASSE)
Connecticut
state · Connecticut DPH Backflow Prevention Device Tester certificate (via a DPH-administered or DPH-approved course; NEWWA courses are DPH-approved)
Delaware
hybrid
Florida
purveyor
Georgia
state · Georgia Backflow Prevention Assembly Tester (GBPAT) program (administered by the Georgia Association of Water Professionals for EPD
Hawaii
hybrid
Idaho
state · Idaho backflow assembly tester license issued by the Idaho Bureau of Occupational Licenses (IBOL
Illinois
state · Illinois Cross-Connection Control Device Inspector (CCCDI) - an Illinois licensed plumber certified through the Environmental Resources Training Center (ERTC) at SIU Edwardsville
Indiana
state · Indiana Registered Cross Connection Control Device Inspector - 40-hour course and exam from an IDEM-approved training provider (ABPA
Iowa
state · Iowa DIAL-approved 32-hour backflow prevention assembly tester course
Kansas
hybrid
Kentucky
hybrid
Louisiana
state · ASSE
Maine
purveyor
Maryland
state · Board-approved backflow/cross-connection certification training programs under COMAR 09.20.04 (providers include IAPMO Backflow Prevention Institute
Massachusetts
state · MassDEP WS 10 Cross Connection Certification (state-issued backflow prevention device tester and cross-connection surveyor certification)
Michigan
hybrid · ASSE 5110
Minnesota
state · ASSE 5110 (tester)
Mississippi
state
Missouri
state · ASSE
Montana
hybrid · ASSE
Nebraska
state · Nebraska Grade VI (Grade 6) water operator certification
Nevada
hybrid · AWWA California-Nevada Section
New Hampshire
hybrid · NEWWA backflow prevention device certification
New Jersey
state · NJDEP-approved certifying agencies under N.J.A.C. 7:10-10.8: New England Water Works Association (NEWWA)
New Mexico
purveyor · 40-hour backflow prevention course based on the USC Foundation for Cross-Connection Control and Hydraulic Research standards (named in NMED permit conditions)
New York
state · NYSDOH-approved backflow tester certification courses (providers include NEWWA
North Carolina
hybrid · Board-approved Cross-Connection certification schools (NC One Water
North Dakota
state
Ohio
hybrid
Oklahoma
purveyor
Oregon
state · Backflow Management
Pennsylvania
purveyor
Rhode Island
hybrid
South Carolina
state · SCDES Backflow Assembly Tester Certification course (written + practical exam)
South Dakota
purveyor
Tennessee
state · TDEC Fleming Training Center Cross Connection Control Basic Workshop (Course 101)
Texas
state · TCEQ-approved Backflow Prevention Assembly Tester 40-hour course
Utah
state · DDW-approved backflow assembly tester certification courses
Vermont
purveyor
Virginia
state · Board-approved Backflow Prevention Device Worker education schools/courses
Washington
state · Washington Certification Services (Green River College) BAT certification program
West Virginia
state
Wisconsin
state · DSPS-approved 40-hour cross connection control assembly tester course
Wyoming
purveyor