Backflow Laws: Ohio
Ohio Backflow Prevention Laws, Regulations, and Compliance Requirements
Ohio's backflow prevention requirements are established in Ohio Administrative Code Chapter 3745-95 (Ohio EPA) and Ohio Administrative Code Chapter 3745-96, with the Ohio Department of Commerce's Industrial Compliance Division administering the Backflow Prevention Technician certification program. Ohio requires a 24-hour certification course plus 5 years of plumbing or water operating experience. Annual testing is required for covered assemblies. Ohio EPA requires 5-year record retention for survey and installation records. This guide covers Ohio's dual-agency regulatory structure, the Commerce backflow technician program, and major utilities including Columbus Division of Power, Cleveland Water, GCWW, and others.
Ohio State Regulatory Framework
Ohio’s cross-connection control requirements are established through two complementary agencies. The Ohio Environmental Protection Agency (Ohio EPA) administers public water system requirements under Ohio Administrative Code Chapter 3745-95 and 3745-96. The Ohio Department of Commerce, Division of Industrial Compliance, administers the Backflow Prevention Technician certification program and oversees backflow prevention within the consumer’s distribution system (downstream of the water meter).
Ohio Administrative Code 3745-95-06 requires: containment backflow prevention assemblies to be maintained in proper working order and in continuous operation; thorough inspections and operational tests at time of installation or repair, and at least once every twelve months thereafter; repair, overhaul, or replacement at the consumer’s expense when defective; and records of inspections, tests, repairs, and overhauls kept by the consumer and made available to the supplier of water.
Ohio EPA requires that suppliers of water retain records of cross-connection surveys, installation of containment principle backflow preventers, and inspections of auxiliary water system connections for a minimum of five years. Survey and inspection records documenting all connections to auxiliary water systems must be maintained and inventoried annually.
Ohio Department of Commerce Backflow Prevention Technician Certification
The Ohio Department of Commerce, Division of Industrial Compliance, administers the Backflow Prevention Technician (BPT) certification program. Ohio’s certification requirements are unique nationally: applicants must complete a 24-hour course from an approved training agency AND have at least five years of experience in the plumbing or water operating industries. The 24-hour classroom-and-lab course uses the Ohio Backflow Prevention and Cross-Connection Control Manual (published by Ohio EPA and Ohio Department of Commerce, with the most recent Fourth Edition published September 2015). After completing the hands-on testing proficiency at the end of the course, the Ohio Department of Commerce written examination must be passed to receive BPT certification.
Ohio’s BPT certification is issued by the Ohio Department of Commerce. A BPT who fails test reports, fraudulently fills out test reports, or engages in other fraudulent activity faces an advisory committee review and potential suspension up to a lifetime ban. Ohio takes technician integrity seriously — the certification carries significant enforcement accountability.
Ohio's 5-Year Experience Requirement for Testers
Ohio is one of the few states that requires backflow testers to have at least 5 years of experience in plumbing or water operating industries before they can certify. Most states require only a training course and examination. This experience requirement means that beginning plumbing students or recent employees cannot immediately become certified testers in Ohio — ensuring that certified Ohio BPTs have substantive field experience before performing testing.
Major Water Purveyors in Ohio
Columbus Division of Power and Water (Columbus Water)
Columbus Water serves approximately 1.1 million people across the Columbus metropolitan area, making it Ohio’s largest municipal water system. Columbus Water’s cross-connection control program aligns with OAC 3745-95 requirements. Annual testing by Ohio BPT-certified technicians is required for all covered assemblies. Columbus Water maintains its own approved tester program with requirements to register before submitting test reports.
Cleveland Division of Water
Cleveland Division of Water (CDW) serves approximately 400,000 direct customers and supplies wholesale water to dozens of suburban communities in Cuyahoga County and surrounding counties. CDW’s cross-connection control program covers commercial, industrial, and high-hazard connections. Annual testing by Ohio BPT-certified technicians is required.
Greater Cincinnati Water Works (GCWW)
GCWW serves Cincinnati and portions of Hamilton, Butler, and Warren counties. GCWW operates a comprehensive cross-connection control program aligned with OAC 3745-95. Annual testing is required for covered assemblies.
Akron Public Utilities and Summit County
Akron Public Utilities serves Akron and surrounding Summit County communities. Annual testing by Ohio BPT-certified technicians is required. Akron’s program covers commercial, industrial, and institutional connections.
Dayton Water and Montgomery County
The Greater Dayton area is served by the City of Dayton’s water system and Montgomery County Water Services. Both operate OAC 3745-95-aligned programs with annual testing requirements.
Toledo Water and Lucas County
The Toledo metropolitan area water is served by the City of Toledo and Lucas County (through the Regional Water and Sewer District). Annual testing is required. Ohio BPT-certified technicians are required for all testing.
Ohio's 5-Year Survey Cycle and Its Compliance Implications
Ohio OAC 3745-95 requires suppliers of water to maintain an inventory of all connections to auxiliary water systems and inspections of these connections annually. Additionally, some provisions reference a 5-year survey cycle for comprehensive cross-connection surveys. Water systems that are behind on their survey cycles face compliance gaps in their OEPA records. Property owners should cooperate with any water system survey teams that contact them — refusal to allow access can result in the water system being unable to document compliance and may trigger enforcement actions.
Property Owner Compliance Summary for Ohio
Ohio BPT certification: Testing by Ohio Department of Commerce-certified Backflow Prevention Technician with 24-hour training course + 5-year plumbing/water experience.
Annual testing: Required for all containment principle backflow preventers at least annually.
5-year records: Consumer retains records of inspections, tests, repairs, and overhauls; Ohio EPA retains supplier survey records for 5 years.
Repair: At consumer’s expense; prompt repair when defective.
Assemblies: Must meet AWWA, ASSE, CSA, or USC-FCCCHR standards per OAC 3745-95-06(A).
Find a Certified Backflow Tester in Ohio
Find Ohio BPT-certified technicians at getyourbackflowtested.com/backflow-testing-near-me/ohio-backflow-testing — covering Columbus, Cleveland, Cincinnati, Akron, Dayton, Toledo, and all major Ohio markets.
Ohio Regulatory Reference Links
| Resource / Agency | URL / Link Target |
|---|---|
Ohio EPA — Cross-Connection Control Compliance | |
Ohio Administrative Code 3745-95-06 — Backflow Preventers (Ohio Laws) | |
Ohio Administrative Code Chapter 3745-95 — Full Chapter | |
Ohio Department of Commerce — Backflow Prevention Technician Certification | |
Ohio BFP Manual 4th Edition (2015) | |
HydroCorp — Ohio EPA Cross-Connection Control Compliance Guide |