• Backflow Certification Classes

    Ranken Technical College is an ASSE (American Society of Sanitary Engineering) certified school for Backflow Assembly Tester training.

    Ranken Technical College offers both certification and re-certification courses for backflow assembly testers on a regular basis with the examinations given immediately following all courses.

    ASSE is recognized by the State of Missouri to certify backflow testers. Those completing the course receive a Missouri Department of Natural Resources certification and an ASSE backflow tester certification which is recognized in many states throughout the nation. You will also earn PEU’s for the St Louis City and County.

  • The American Society of Sanitary Engineering

    ASSE publishes 20 Standards on backflow prevention and cross-connection control devices and assemblies and is accredited by the American National Standard Institute (ANSI).

    The ANSI/ASSE Series 5000 Qualification Standard for Backflow Prevention Testers, Repairs, & Surveyors is the only ANSI accredited qualification standard for backflow testers, repairers and surveyors in the industry. This means that by completing the ASSE Backflow Assembly Tester Certification or Re-certification Training program, you will be certified to an ANSI accredited standard.

  • New Backflow Tester Certification Class

    This class is designed for someone who is never been certified as a backflow tester.

    The course is 40-hours and covers information on cross-connection control, state and federal regulations, basic hydraulics, hands-on training on how to test various types of backflow devices, ASSE standards as they pertain to cross-connection, basic repairs and troubleshooting. All students receive a comprehensive study guide in class.

    The objective is to teach someone new to the backflow industry the practical and technical knowledge necessary to test backflow devices and trouble-shoot when failures occur.

    Following the course students take a 100-question written exam and a hands-on exam and test a Reduce Pressure Zone Assembly, a Double Check Assembly, a Pressure Vacuum Breaker and a Spill Resistant Vacuum Breaker BY MEMORY.

    Prerequisite: ASSE requirements for those taking the class are that: “a student has demonstrated at least five years of experience in a plumbing, pipefitting or a related industry field…” Experience in lawn irrigation is acceptable. Students must verify this experience when they register for the class.

  • Backflow Tester Recertification Class


    This course is designed to review the principals of cross-connection control for the individual who currently holds a backflow tester certification.

    The class reviews basic information about cross-connection, state and federal regulations, reviews hydraulics and the operation of backflow devices and assemblies. In addition to the 25-question written exam, a hands-on test consists of testing a RPZ, DC, Pressure Vacuum Breaker and Spill Resistant Vacuum Breaker. All four of these devices are tested BY MEMORY.  A Study Guide is given to all students who are enrolled.

    Note: You must have a valid backflow tester card issued by the Missouri Department of Natural Resources, ASSE, or ABPA. ASSE will give a six-month grace period for expired cards in order to take the re-certification class. It is recommended you re-certify 60-90 days before your card expires. If you have been previously certified through any organization other than ASSE or ABPA, ASSE must approve your certification before enrolling. You are not certified to test backflow devices if your card is expired. It can take up to 4-6 weeks after class to receive your renewed card.


“For our ASSE Certified Personnel, we want to reassure you that you will be able to recertify, even after the expiration date of the certification. ASSE is giving a 6-month grace period for you to complete a recertification class and exam. Learn more about the steps we’re taking for our Certified Personnel HERE.”

Please call or email David Munie with any questions. 314-286-3362 [email protected].

Please see the information below to enroll today! Seating is Limited! All sessions take place from 8am to 4:30pm. Attendees will meet in the Ranken Cafeteria at 7:45am each day of classes.

Upcoming Backflow Certification Classes $1025 (Non-Refundable):

  • August 5-9, 2024 DAY
  • October 7-11, 2024 DAY
  • December 2-6, 2024 DAY
  • February 3-7, 2025 DAY

Upcoming Backflow Re-Certification Classes $375 (Non-Refundable):

  • September 20, 2024 DAY
  • November 8, 2024 DAY
  • January 17, 2025 DAY

If you have any questions about the courses or certification, please contact Dave Munie, Ranken Technical College Department Chair for Plumbing Technology, at 314-286-3362 or [email protected].

You must register and pay for the class two weeks in advance to attend.

To register for a class, please fill out the ONLINE APPLICATION.

To pay for a class, you can contact the Business Office at 314-286-4869 after you have submitted your application.

If you have any questions about registering for the class, please contact Julie Lakin at (314) 286-3678 or [email protected].


If you have failed a Certification or Re-Certification and need to retest, the following must be done:

  • For a  Retest Application, please fill out the ONLINE APPLICATION.
  • Pay the $160 fee to the Business Office via phone at 314-286-4869 or in person at 4431 Finney Ave.
  • Contact Dave Munie at [email protected] or 314-286-3362 to schedule your retest date.